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EMC ControlCenterProduct Description Guide Enterprise Storage Software


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EMC CONTROLCENTER PRODUCT DESCRIPTION GUIDE

EMC ControlCenterProduct Description Guide

Table of Contents3 Table of Figures

4 Tables

5 Chapter 1: Introduction

5 Overview

5 Console-Symmetrix M anager

6 Delivering the Vision for an Optimal Business Environment

6 Todays Storage Management Challenges

7 EM C Enterprise Storage

7 EMC Enterprise Storage Network (ESN)

7 Implementation Advantages

8 The FibreAlliance and EMC

8 The E-infostructure of Information Management

9 Chapter 2: EMC ControlCenter Overview

9 EMC ControlCenter Applications

9 Storage Device M anagement Solutions

10 Storage Network Management Solu tions

10 Storage Resource Management So lut ions

11 EMC ControlCenter Console

11 Web Edition

12 Framework Integration

12 EMC ControlCenter Symmetrix Manager

13 Chapter 3: EMC ControlCenter Console-Symmetrix Manager

13 EMC ControlCenter Console

13 Topology Map

13 Alert Management

13 Console

14 Symmetrix Manager

14 Local and Distributed Monitoring

15 Supported Host Server Platforms

15 Configuration Information

16 Symmetrix Director Configuration

17 Disk Director Configuration

18 Mapping Front-End To Back-End Configurations

18 M ainframe Volsers Configuration

19 Status In formation

20 Communications Status

20 Symmetrix Status

20 Volume Status

20 Performance M onitor Status

20 Device Statistics


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20 Director Status

20 Performance Information

21 Defining Performance Thresholds

22 Performance Status Indicator

22 System Performance

22 Director Performance

23 Symmetrix Logica l Volume Per formance

24 Physical Disk Performance

24 Propagation o f Status and Performance

25 Advanced Performance Analysis

25 Connectrix Manager

26 Chapter 4: SRDF-TimeFinder Manager

26 M anaging SRDF

27 Managing EMC TimeFinder

29 Chapter 5: Configuration M anager

29 Reallocate SLDs

29 Configure SLDs

29 Assign SLD Attr ibutes

30 Chapter 6: Symmetrix Optimizer

30 Self-tuning

31 User-controllable parameters

32 Symmetrix Optimizer Quality of Service

33 Chapter 7: ESN Manager

33 ESN Manager Overview

33 Capabilities

34 Volume Access Functionality

35 Protecting Data

35 Implementing a Storage Subsystem Access Control Policy

36 Creating the Storage Network Access Control Policy

36 Meta Units

37 Enforcing Access Control Policies

37 Autopathing

38 Command Line Interface39 Report Generation

40 Chapter 8: Resource View

40 Information Capabilit ies

40 Resource View O perations

41 Viewing Tabs

43 Chapter 9: Resource Availability

44 Chapter 10: Database Tuner

45 Responding to Customer Needs

45 Database Tuner Operations

46 Information Gathering


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47 Chapter 11: Workload Analyzer

47 Key Features

47 Workload Analyzer Components

48 WLA Collection M anager

49 WLA Performance View

49 WLA Reporting Features

50 Host Performance Information

51 Chapter 12: EMC Global Services

51 EMC Professional Services

51 EMC Customer Service

52 EMC Global Technical Training

Table of Figures

7 Figure 1. EMC ControlCenter Suite of Product Functions12 Figure 2. EMC ControlCenter Console

14 Figure 3. EMC ControlCenter Symmetrix Manager Performance Run Chart

15 Figure 4. EMC ControlCenter Symmetrix Manager Monitor Symmetrix Configuration

16 Figure 5. Director Layout

17 Figure 6. Front-End Configuration

17 Figure 7. Back-End Configuration

18 Figure 8. Mapping Front-End to Back-End Configurations

19 Figure 9. Mainframe Dataset Configuration Information

19 Figure 10. Main Status Screens

21 Figure 11. Main Performance Screens

22 Figure 12. Set and Monitor Performance Thresholds

22 Figure 13. System Performance

23 Figure 14. Director Performance

24 Figure 15. Volume Performance

24 Figure 16. Propagation of Status

27 Figure 17. SRDF Configuration and Status Information

27 Figure 18. EMC TimeFinder Configuration

29 Figure 19. Symmetrix Disk Reallocation

30 Figure 20. Point-and-click end-user controls simplify the tuning process.

32 Figure 21. Symmetrix Optimizer transparently reconfigures physical drives .

32 Figure 22. Quality of Service Capabilities.

33 Figure 23. ESN Manager

34 Figure 24. ESN ManagerZoning

37 Figure 25. Meta Unit

40 Figure 26. EMC ControlCenter Resource View - Capacity Mapping

41 Figure 27. EMC ControlCenter Console with Resource View

43 Figure 28. EMC ControlCenter Resource Availability

44 Figure 29. EMC ControlCenter Database Tuner

46 Figure 30. EMC ControlCenter Database Tuner Mapping Capability

48 Figure 31. EMC ControlCenter Workload Analyzer Main Window


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49 Figure 32. Symmetrix Physical Disk Performance Statistics

50 Figure 33. Historical Analysis

Tables

50 Table 1. I/O load and CPU utilization


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Chapter 1

Introduction

Todays IT managers face critical questions every day: How can we manage more information with

fewer people? Or, handle increased customer demand for service? Or manage larger numbers of

groups involved with enterprise management, all with separate points of contact?

The answers to complex issues of information management emerge after the enterprise initiates a

series of changes and adaptations. First, maximize human and computing resources, probably

with a Storage Area Network (SAN) or an EMC Enterprise Storage Network (ESN), which allows

the enterprise to store ever-increasing pools of data. Then add the Fibre Alliance MIB, which

allows IT managers to monitor Fibre-channel-based hubs, switches, host bus adapters (HBA),

routers, servers, and management software anywhere on the ESN. Finally, add EMC

ControlCenter to bring all these elements together. ControlCenter provides a single point of

management with the capability to manage, protect, and share all the information resources

included on an EMC Symmetrix system, as part of a Connectrix system, or anywhere in the

SAN/ESN.

Overview EMC ControlCenter allows IT managers to manage a large infrastructure inexpensively,

productively, without the need for additional personnel. ControlCenter brings a suite of powerful

information management applications capable of addressing problems as small as one Symmetrix

or as large as complex networks and hundreds of Symmetrix systems. If an IT manager needs to

address a performance problem, ControlCenter can provide the tools.

Console-Symmetrix M anager The Console-Symmetrix Manager of the EMC ControlCenter runs on three platforms: web

browser, Windows, and UNIX. It provides a star ting point to launch all management applications,

such as Navisphere, Connectrix M anager, and InfoMover. The console allows users to access the

auto-topology view, showing connections throughout the ESN, and pr ovides monitoring for the

Symmetrix, CLARiiON, Celerra, Connectrix and third party devices, such as switches and hubs.

With Console-Symmetrix Manager as a base, EMC ControlCenter includes management options

that monitor, configure/control, tune, and plan functions.

EMC ControlCenter Console-Symmetrix Manager (Chapter 3)

SRDF-TimeFinder M anager (Chapter 4)

Symmetrix Disk Reallocation (Chapter 5)

Symmetrix Opt imizer (Chapter 6)

ESN M anager (Chapter 7)

Resource View (Chapter 8)

Resource Availability (Chapter 9)

Database Tuner (Chapter 10)

Workload Analyzer (Chapter 11)


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Delivering the Vision EMC provides centralized tools that simplify information management. EMC ControlCenter

for an Optimal helps enterprises leverage business information and achieve full competitive advantage. With

Business Environment ControlCenter, managers gain a rugged infrastructure with the flexibility to efficiently deploy (and

redeploy) human and computing resources. ControlCenter management tools help define

information infrastructure policies, thresholds, and parameters, tr ack changing requirements, andprovide a solid foundation for information growth.

With centralized storage environments, such as Storage Area Networks (SAN) and the EMC

Enterprise Storage Network (ESN), the EMC ControlCenter console displays icons for all

Symmetrix Enterprise Storage Systems, as well as the Connectrix Enterprise Director, th ird-party

switches and hubs, CLARiiON , and multi-platform server hosts.

The FibreChannel interfaces built into Connectrix and other ESN components allow customers to

physically extend the data center and increase performance. Similarly, ControlCenter's open

architecture provides for storage network components that support the FibreAlliance MIB (V1.5

and V2.2). From the ControlCenter Console, users can monitor third-party switch and hub statusand click on the appropr iate icon to launch native management too ls.

EMC Contro lCenter also supports MVS datasets and volsers (in Resource View); remote data col-

lection for MVS, which avoids manual file transfer of Symmetrix performance data (in Workload

Analyzer and Symmetrix Manager); and offers in-depth support for an MVS environment (in

Resource Availability).

Todays Storage As information continues to drive business in every industry around the world, information

M anagement Challenges systems professionals face critical challenges ranging from staffing needs to maintaining a flexible

infrastructure:

Shortage of qualified IT staff. Many companies operate from business sites around the world.

They regularly use extended data centers and multiple operating systems, yet they experience

difficulty in finding sufficient qualified IT staff to handle these environments. The demand for

personnel exceeds the supply, with rising salaries the result.

M eeting Service Level Agreement s. These limited staffs now face increased demands as a result

of rising availability and performance expectations.

M anaging business continu ance. Companies realize planned or unplanned downtime reduces

productivity and unplanned downtime results in lost revenue. As a result, backup windows and

disaster recovery testing shrinks dramatically, while the demands to support business continuance

increase.

Maintaining flexible storage infrastructure. Because business requirements change quickly,

companies must add and re-deploy open systems hosts regularly. IT personnel need flexible storage

to support these systems and the ability to dynamically reallocate resources.

Capacity Planning. Growing volumes of required data demand that IT personnel analyze

trends in performance and usage constant ly. They then must efficiently allocate resources to remain

ahead of customer needs.


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Figure 1. EM C ControlCenter Suite of Product Functions

Add the current trends in the marketp lace to these challenges massive storage growth, storage

consolidation, and management consolidation and a scenario emerges that only dynamic, inte-

grated toolsets can handle, a toolset such as EMC ControlCenter.

EMC Enterprise Storage As part of the EM C Enterprise Storage family, EMC Contro lCenter provides software integrated

with Symmetrix Enterprise Storage products and the Enterprise Storage Network. EMC

ControlCenter can:

Monitor throughout the Enterprise Storage Network, including third-party components

Facilitate enterprise-wide information management, protection, and sharing

Deliver the highest levels of performance, scalability, and connectivity

Provide intelligence at the storage system level

Utilize industry-standard interfaces

EMC Enterprise EMC Enterprise Storage Network (ESN) achieves a leadership position in SAN technology with a

Storage Netw ork (ESN) high-speed, Fibre Channel-based network consisting of storage, switches, and hubs that expand

EMC Enterprise Storage capabilities beyond the walls of the data center. ESN offers a fault-

tolerant, self-healing, enterprise-wide architecture that allows optimum management, pro tection,

and sharing of all information resources in the enterprise.

Implementation Advantages ESN offers significant advantages in informat ion consolidation, connectivity, multi-host support ,

ease of management, and enterprise value. The unique EMC ESN implementation package

consists of hardware, software, consulting, product support services, and vendor-supplied

equipment qualification.

ESN, a specialized open network, offers universal data access for every major computing platform,

operating system, and application across any combination of SCSI, Ultra SCSI, Fibre Channel, and

ESCON technologies.

With ESN, EMC delivers a complete Fibre Channel SAN solution comprised of the Connectrix

Enterprise Director, Enterprise Storage Network Management Software, Enterprise Storage

Network Professional Services, EMC customer service, and extensive SAN component

interoperability activities.

Monitor Configure

PlanTune

InformationManagement


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When users combine ESN functionality (from Connectrix Manager and ESN Manager soft-

ware) with EMC Contro lCenter capabilities, system administrators gain unprecedented control of

the information storage and connectivity environment. EMC Contr olCenters simplified manage-

ment functions mean IT depar tments can devote more t ime and staff to business services and appli-cation development.

The FibreAlliance and EMC As a founding member of the Fibre Alliance, EMC works with Fibre Channel product companies

to develop and implement common methods for managing Fibre Channel-based storage area

networks (SAN) and computer servers. Members of the FibreAlliance include leading providers of

Fibre Channel-based hubs, switches, host bus adapters, routers, servers, and management

software.

By helping customers implement Fibre Channel-based sto rage networks, t he FibreAlliance gives

customers the freedom to choose interconnect devices without concern for management

capabilities across a heterogeneous environment. Fibre Channel users gain enhanced integration

and functionality among Fibre Channel-based products, resulting in simplified management,

enhanced cost-effectiveness, and rapid market deployment of SANs.

The E-infostructure of Fallout from the information explosion leads to data centers straining to handle terabytes of

Information Management information and areas of diminishing resources. Customers need readily available information

within seconds. Organizations need management tools to drive the business and maximize the

effectiveness of administrators.

EMC ControlCenter provides necessary informat ion management. A single console allows man-

agement of the E-infostructure as it extends across the storage network. EMC ControlCenter mon-

itors, manages, and reallocates the resources in information centers. By deploying an EMC

infostructure, companies ensure that their business remains ahead of the competition, that it con-

tinues to serve customers well, and that the organization provides well-protected and managed

information.


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Chapter 2

EMC ControlCenter Overview

EMC helps storage administrators manage the complete Enterprise Storage Network (ESN) with

EMC ControlCenter. A simple configuration includes a single host connected to one Symmetrix

system. M ore complex configurations include many clients using a network connection to multiple

agents, each connected to multiple Symmetrix systems.

Contro lCenter monitors a ll systems in an Enterprise Storage Network (including Symmetrix, Con-

nectrix, CLARiiON, or third-party switches and hubs) from a single management console that

remains independent o f host systems and location.

EMC ControlCenter EMC ControlCenter offers a suite of products that helps users manage devices, networks, and

Applications resources.

Storage Device Man agement. The components in ControlCenter that manage Symmetrix devicestatus, configuration, and performance include Symmetrix Manager, SRDF-TimeFinder Manager,

Configuration Manager, and Symmetrix Optimizer.

Storage Netw ork Management. ESN Manager manages aspects of the storage network, specifi-

cally topology, zoning, and volume access across the ESN. OnAlert offers added assurance to users

through its dial-home capabilities for EMC-supplied switches.

Storage Resource Man agement. Several ControlCenter components handle asset tracking, perfor-

mance utilization, capacity utilization, and policy management from a host/application perspec-

tive. These components include Resource View, Resource Availability, Symmetrix Database Tuner,

and Workload Analyzer.

Users access these functions in t he centralized, automa ted, integrated storage management envi-

ronment o f EMC ControlCenter. This environment supports the application view (versus the stor-

age view), which allows users to make choices from a business perspective.

Storage Device EMC ControlCenter storage device management solutions include Symmetrix Manager,

Management Solutions SRDF-TimeFinder Manager, Configuration Manager, and Symmetrix Optimizer.

Symmetrix Manager

The Symmetrix Manager component o f EMC Contro lCenter speeds and simplifies management of

Symmetrix storage systems for maximum business benefit. It a llows convenient access to interna l

configuration information and provides the capability to obtain operational status, set perfor-

mance thresholds, and monitor realtime performance of Symmetrix systems.

EMC ControlCenter SRDF-TimeFinder Manager

EMC Contro lCenter uses SRDF-TimeFinder Manager to provide full user control of Symmetrix

Remote Data Facility (SRDF) and EMC TimeFinder business continuance volumes (BCVs). A

local or remote stat ion monitors and controls these industry-leading solutions for business contin-

uance and disaster recovery, enabling centralized management for the entire information infra-

structure.

SRDF facilitates business continuance and disaster recovery by maintaining a mirror image of a

logical volume on a remote Symmetrix system. By initiating the SRDF-TimeFinder Manager, users

can monitor SRDF status, including dynamic information, while the SRDF operation remains in

progress. SRDF uses a Windows or UNIX Mot if graphical user interface (GUI) and a command

line interface for UNIX, Windows NT, and MVS automates SRDF operat ions.


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EMC TimeFinder enhances enterprise productivity through creation of separately addressable mir-

rored volumes within a Symmetrix system. From a local or network-attached host, the SRDF-

TimeFinder Manager provides a UNIX or Windows GUI for creating BCV mirrored pa irs and then

establishing, splitting, or restoring the standard volume and the BCV. Users can monitor

TimeFinder status including dynamic status information for an in-process TimeFinder opera-tion and perform EMC TimeFinder operations.

Confi guration Manager

Configuration M anager gives users maximum contro l over their Symmetrix environment allowing

them to make configuration changes instantaneously to meet the needs of their evolving environ-

ment. Users are able to create Symmetrix Logical volumes from free space. Users can then specify

the size, mirror protection level, and type of volume (STD, BCV, SRDF, or DRV). These Symmetrix

logical volumes can then be assigned to ports on Symmetrix front-end host adapters. With d rag-

and-drop simplicity, Configuration Manager lets administrators manually allocate storage or

balance workloads by distributing volumes across multiple ports. Whether it is used to alleviate

potential bottlenecks or align resources according to changing business needs, Configuration

Manager lets you manage your environment more efficiently.

Symmetrix Optimizer

Symmetrix Optimizer provides automatic performance tuning for Symmetrix disk drives.

Optimizer minimizes the effort and expertise necessary to achieve optimum performance. Opti-

mizer automatically monitors, analyzes, and moves highly active Symmetrix logical volumes to

provide load balancing, and maintain op timal Symmetrix disk drive performance.

Storage Netw ork EMC ControlCenter storage network management solutions include ESN M anager and OnAlert.

Management Solutions

ESN Manager

ESN Manager software streamlines management tasks across several specific SAN devices and

their requisite tools. ESN Manager helps assign Symmetrix volume access controls for host bus

adapters (HBAs), and offers a common zoning interface for suppo rted switches. ESN Managers

path configuration and management solution enable users to adapt quickly to changing environ-

ments.

EMC O nAlert

EMC OnAlert, a network management tool, provides monitoring and dial-home capabilities for

an EMC-supplied switch.

EMC O nAlert includes ESN Remote, Dial EMC, and SymmRemote. These components monitor

the ControlCenter server for errors, and send information about the error to the EMC Service Cen-

ter. From a remote location, an EMC technical specialist runs d iagnostics on the troubled device,

determines the nature of the problem, and either fixes it remotely (if possible), or notifies the proper

Customer Service Representative for an on-site repair.

EMC OnAlert ensures that critical business information remains protected and available.

Storage Resource EMC ControlCenter resource management solutions include Resource View, Resource Availability,

Management Solutions Symmetrix Database Tuner, and Workload Analyzer.

EMC ControlCenter Resource View

Resource View provides a single screen end-to-end display of the entire storage infrastructure.

Combining host filesystem and database mapping with Symmetrix mapping enables Resource

View to provide a complete view of the storage environment. Users can explore the storage infra-

structure with context-sensitive tabu lar displays or a visual Links View screen that separates each

level of the storage system into vertically stacked windows. Users can begin from any point to drill

down or d rill up.


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Creating Line-of-Business groups makes the environment easier to manage. These groups a llow

combinations of storage environment components, with capability to create groups for unified

management, whether by geography, application or computer platform.

Resource Availability

Resource Availability allows users to manage logical storage resources across MVS, Windows, and

UNIX servers through one app lication. With one tool, users can allocate resources and set alert-

based policies. Resource Availability delivers the functionality required to manage storage

resources throughout the enterprise. The autofix function automatically fixes certain error s, with

decisions about automatic fixes made as policy-driven functions. Reporting capabilities give users

sufficient information to act proactively and ensure maximum uptime, so important information

remains available 7 X 24 X 365.

Database Tuner

Database Tuner uses host-to-storage mapping technology for application-level tuning for O racle

database (open systems) environments.

Database Tuner allows users to identify database performance problems in the server, dat abase, or

storage. Users can evaluate accumulated logical performance data proactively. Seeing the same

screen displays allows storage and database administrators to work together to identify, detect,

and resolve potential throughput p roblems, before the p roblem occurs. A unique sampling method

requires minimal CPU overhead and a llows frequent monitoring of active database performance.

Workload Analyzer

Workload Analyzer helps the storage administrator perform trend analysis, a critical part of

capacity planning. As a post-pro cessing tool, the Workload Analyzer complements the real-time

component-level performance data collected by EMC ControlCenter Symmetrix Manager.

The Workload Analyzer allows the storage administrator to collect, analyze, and graph h istorical

performance data from across the enterprise on a single Windows 98, Windows 2000 , or Windows

NT management station. Workload Analyzer helps identify performance trends and assists in

problem isolation. The output can focus I/O tuning, configuration, or upgrade enhancements on

the most beneficial areas. In addition, the "analyst mode" function takes samples at frequent inter-

vals to help isolate the problem.

EMC ControlCenter Console Graphical user interfaces (GUIs) for Windows 98, Windows 2000, Windows N T, UNIX Motif,

and a web-based browser provide easy, intuitive access to EMC ControlCenter.

The browser-based interface for EMC ControlCenter supports monitoring of all components

across the ESN.

A command line interface (CLI), included with SRDF and TimeFinder software, assists in produc-

tion task automation via user-created scripts.

Web Edition* Developed for monitoring the ESN, the Web Edition Console allows users to:

Discover Fibre Channel devices compliant with Fibre Alliance MIB 1.5 and M IB 2.2.

Display the Enterprise Storage Network (ESN) topology map and event log.

Launch ESN management software, including EMC ControlCenter Console and Symmetrix

Manager, Connectrix M anager, Celerra Manager and other ESN monitoring tools.


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Figure 2. EMC ControlCenter Console

Framework Integration EMC ControlCenter provides integration modules for CA Unicenter TNG, Hewlett-Packard

OpenView, IBM Tivoli TME, and Bull OpenMaster.

EMC ControlCenter also provides an SNMP MIB agent for integration with other frameworks,

further suppor ting a simplified management environment.

EMC ControlCenter EMC ControlCenter includes the Console and Symmetrix Manager plus optional components.

Symmetrix Manager A browser-based interface gives users monitor ing capability for the ESN, performance threshold

setting, and monitoring for the Symmetrix system. Symmetrix Manager provides convenient access

to Symmetrix internal configuration, operational status, and real-time performance information

extracted continuously and displayed in real time. Extensive windowing capabilities provide access

to a wide range of physical and logical views.

NOTE: EMC ControlCenter Console and Symmetrix Manager are prerequisites for using the

optional capabilities. See Chapter 3 for details.

Symmetrix Manager

Connectrix Manager


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Chapter 3

EMC ControlCenter Console-Symmetrix Manager

This chapter focuses on the central role that EMC ControlCenter Console-Symmetrix Manager

plays in EMC ControlCenter.

EMC ControlCenter Console The EMC ControlCenter Console displays topology information, provides alert management, and

uses windows to present several views of the data.

Topology Map The topology map (available in the Web Edition of the Console) displays the topology configura-

tion and status of all ESN-managed objects (e.g., storage arrays, switches, hubs, CLARiiON, and

other devices). The icon's color indicates the status of the component.

Click the appropriate icon for detailed management and diagnostic information for a device within

EMC's Enterprise Storage Network. Click a Symmetrix icon to launch Symmetrix Manager or

click the Connectrix icon to launch Connectrix Manager (which provides detailed fabric- and

path-specific views). Click to launch management t ools for hubs and switches supporting the Fibre

Alliance.

ControlCenter supports additional sorting and filtering capabilities that focus the view and quickly

locate specific objects or configurations. A user may designate a " Line of Business" view that

allows grouping of objects within the ESN by the application that those objects support.

Alert M anagement Users define levels for both status and performance alerts and monitor devices at the group or indi-

vidual levels. Alert M anager allows administrators to create more flexible management configura-

tions. I/O statistics help structure the alerts at the Symmetrix system and switch port levels.

Symmetrix Manager configures thresholds for the Symmetrix system components.

Console From the EMC ControlCenter Console, click on a Symmetrix icon in a configuration (Figure 2).This action launches Symmetrix Manager and initiates the main window display (Figure 4). The

main window includes:

Menu Bar

Quick Access Toolbar

Performance Run Chart

System Status Indicators

System Information


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Figure 3. EM C ControlCenter Symmetrix M anager Performance Run Chart

Color-coded Levels of Information

All windows use color to show viewers various levels of information:

Green indicates acceptability.

Yellow alerts the user to an in-process, incomplete, or questionable situation.

Red warns of unacceptability.

Storage administrators use color coding to quickly navigate through Symmetrix Manager and dis-

play in-depth information. This comprehensive, easy monitoring of many storage system levels

encourages optimized, high levels of Symmetrix system performance.

Symmetrix Manager The Symmetrix Manager component monitors and displays configuration, status and perfor-

mance information about Symmetrix storage. By continuously extracting and displaying infor-

mation in real time, Symmetrix Manager promotes efficient and effective management of

Symmetr ix systems.

A choice of graphical user interface (Windows 98, Windows NT, UNIX M otif, or Web Edition)

provides quick, intuitive access to both top-level information and supporting detail. Extensive

windowing capabilities provide simultaneous display of multiple windows. Enterprise-wide

monitoring capabilities enable monitoring of all Symmetrix systems from a single management

console, regardless of location.

Local and Distributed Symmetrix Manager offers local and distributed monitoring of both open systems and ma inframe

Monitoring volumes. It runs from a local host or as part of a distributed client/server implementation.

Local implementation. EMC ControlCenter software resides on a Windows NT- or UNIX Motif-

based system and communicates with the Symmetrix directly.

Distributed implementation. The GUI for an EMC ControlCenter client displays on a work-

station (Windows 98, Windows 2000, or Windows NT) or through a web-enabled browser.

The client communicates over a TCP/IP network with an agent residing on a Windows NT,

UNIX, or MVS/ESA system. The agent uses the host system's chann el connection to poll th e

Symmetr ix system.


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ControlCenter can monitor multiple Symmetrix system across the Enterprise Storage Network.

Supported Host Server EMC ControlCenter monitors and controls storage for the following platforms:

Platforms Bull Escala Systems running AIX

Compaq Alpha systems running Compaq Tru64 UNIX

Hewlett Packard 9000 systems running HP-UX

IBM RS/6000 and SP2 systems runn ing AIX

Intel systems running Windows

Linux systems

Mainframe systems running OS/390

NCR 34xx, 35xx, 36xx, and 5100 systems running SVR4

Sequent Symmetry and NUMA-Q systems running DYNIX/ptx

SGI Challenge S, L, DM, and XL, and Or igin systems running IRIX

Siemens RM400 and RM600 systems running Reliant UNIX

Sun SPARCserver and Enterprise Server systems running Solaris

Configuration Information Symmetrix Manager provides a physical view of storage to facilitate data placement and maximize

volume availability. Mapping from the physical to logical view is provided with ResourceView,

detailed in Chapter 8.

NOTE: Datasets, the equivalent of a file system in open systems, only exist in MVS.

Figure 4. EMC ControlCenter Symmetrix Manager Monitor Symmetrix Configuration

Simultaneous use of different synchronized windows reveals key interrelationships and different

levels of information, particularly configuration of the:

Symmetrix directors

Front-end host adapters (Channel Directors)

Back-end disk adapters (Disk Directors)

Director Layout

Front-End Layout

Host to Logical Volume Mapping

Back-End Layout

Logical Volume toPhysical Disk

Mapping


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Symmetrix Channel Clicking a button on the overall Channel Director Configuration screen reveals detail about the

Director Configuration front-end SCSI and Fibre Channel Directors. Storage administrators who know the Symmetrix

storage systems director configuration can re-assign storage to a disk director with great accuracy.

It makes little sense, for example, to a llocate disks to reside behind a director with 20 disks already

behind it, especially when a director with only five disks is available.

The Symmetrix Channel Director GUI provides information about the Symmetrix logical volumes

associated with the front-end directors and identifies the groups of disks associated with each disk

director. This display shows each Symmetrix port and the type of director managing each popu-

lated director slot for:

Fast-Wide or Ultra SCSI Director (SA)

Fibre Channel Director (FC)

Disk Director (DA)

Parallel Channel Director (CA)

ESCON Channel Director (EA)

SRDF Remote Link Director (RA)

Figure 5. Director Layout

Storage administrators quickly can determine port sta tus by looking at the colors of the port but -

tons (e.g., green for online, yellow for offline, and red for non-functional). The Status Information

section in this chapter provides additional details.


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Figure 6. Front-End Configuration

Symmetrix Manager displays:

H ost name

Director number

Por t number

Target/LUN (SCSI/Fibre addressing)

Symmetrix logical device number or target/LUN protection method used

Meta devices

BCV (when business continuance volumes are configured with EMC TimeFinder via the EMC

ControlCenter Control Option)

Disk Director Configuration Symmetrix Manager displays detailed back-end configurat ion information that maps Symmetrix

logical volumes to physical disks.

Figure 7. Back-End Configuration

Clicking on a specific Disk Director butto n in the overall Director Configuration window reveals

the following data for each port :

Disk Director number

Interface (back-end port)


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Physical device target ID

Symmetrix Logical device number

Device type (mirrored disks, hot spare, RAID parity device, etc.)

The same window shows the Symmetrix back-end disk adapter (which addresses the physical

device target ID); the Symmetrix logical device number; individual volumes and hyper-volumes

within a physical device.

Mapping Front-End to Simultaneously opening different configuration windows shows the component relationships.

Back-End Configurations Opening the Channel Director Configuration and the Disk Director Configuration windows

displays the relationship between the front- and back-end directors. This knowledge helps plan

volume allocation and mainta in a balanced back end.

Figure 8. Mapping Front-End to Back-End Configurations

Opening both the Channel Director and Disk Director Configuration windows shows the location

of single or multiple devices. Clicking on a display in one window highlights related information in

the other window, including:

Disk Director connection for a given device

Devices on a given port

Disk devices connected via a given host adapter

Disk devices associated with a given host

The Resource View opt ion (Chapter 8) provides additional host-to-Symmetrix mapping capabilities.

M ainframe Volsers The Symmetrix M anager component displays mainframe volsers information. By simultaneously

Configuration displaying the mainframe volser, the host director configuration, and the disk directors

configuration windows, users can simplify performance decisions and configuration optimization.

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Figure 9. Mainframe Dataset Configuration Information

Status Information Symmetrix Manager constantly monitors the elements involved in the Symmetrix storage process.

Colors immediately show non-functional devices and Symmetrix Manager automatically

propagates t hat informat ion, passing it to pre-determined individuals or systems.

Figure 10. Main Status Screens

The dockable System Status window (right side of the main window) provides a quick, color-

coded view. Clicking on individual indicators reveals the next level of information. The base com-

ponent, EM C ControlCenter Console-Symmetrix Manager, continuously monitors and displays:

Host/Symmetrix communications status

Symmetrix overall status

Volumes status

Volume Details

Volume Status

MVS Dataset List


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Performance monitor status

Device statistics

Physical Device statistics

Director status

Communications Status The communication icon color shows the Communication Status, or the state of the link between

host and Symmetrix systems.

Symmetrix Status The Symmetrix status button monitors the complete Symmetrix environment and changes color if

a Symmetrix system error occurs. Clicking on the button displays a matrix of the monitored errors.

Color-coding within the matrix enables the storage administrator to quickly see the environment

status. This button tracks key environmental factors (e.g., temperature, power supply, volume

readiness, RAID and SRDF device readiness, and faults).

Symmetrix Status links directly to EMC's Customer Support Center system for constant system

protection. After automa tically executing a customized script that activates a pager or sends e-mail

announcing an environment error condition (e.g., a PhoneHome repor t), EMC not ifies the cus-

tomer and schedules a service call.

Volume Status The color o f the Symmetrix Volume Status icon varies with the stat e of each logical volume (e.g.,

whether data is available, volumes are ready, volumes are mirro red, or host access is available).

Clicking on the Volume Status button displays the status of each logical Symmetrix volume by

number. Clicking on an individual volume reveals volume properties with both fron t- and back-

end information.

Navigating through detailed volume information gives storage administrato rs sufficient informa-

tion to take corrective action and ensure optimum data placement and availability. Symmetrix

Manager updates volume status information after each pre-determined polling interval.

Performance Monitor Status Clicking on the Performance M onitor Status icon generates a Performance Run char t that displays

hit rat ios, write ratios, and I/Os per second. Users can define the current and historical data plot-

ted on this chart.

Device Statistics The Device Statistics icon r egisters information about Symmetrix logical volumes performance.

Similarly, the Physical Device Statistics icon registers information about the Symmetrix physical

disk performance.

Director Status The Director Status w indow reveals the statu s of each type of Director in the Symmetrix configu-

ration. Clicking on any director button shows the directors detailed configuration.

Green Director and at least one port or interface online

Yellow All ports and interfaces offline

Red Director not responding

Performance Information By monitoring performance in real time, Symmetrix Manager allows storage administrators to

store and retrieve data efficiently and effectively and meet business application needs.


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Figure 11. Main Performance Screens

Symmetrix Manager continuously monitors and displays:

System Performance for all front-end Channel Directors

Director Performance, by type of Director

Symmetrix Logical Volume Performance for individual disk devices

Physical Disk Performance for individual disk devices

Defining Performance Symmetrix M anager measures performance against user-defined thresholds, with overall system

Thresholds performance measured according to parameters for:

H it ratio

Write ratio

I/Os per second

Hit ratio determines the effectiveness of cache; write ratio determines whether Symmetrix activity

matches the expected ratio of read/write activity for the connected hosts.

Symmetrix Manager gauges Symmetrix logical volume and physical disk performance against

upper and lower limits for I/Os per second, total hit ratio, write ratio, read hit ratio, and

throughput.

ControlCenter provides default settings for all these parameters. Users can set the parameters to

reflect preferred limits, actua l thresholds for each parameter, and request notification of deviations

from defined parameters.

System Performance

Director Performance

Volume Performance


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Figure 12. Set and M onitor Performance Thresholds

Performance Status Indicator The Performance Status Indicator dockable window shows overall performance within the estab-

lished ranges for the hit ratio and the write ratio.

Gray Data unavailable because of incomplete polling cycle

Green Ratios within est ablished ranges

Red Ratios outside established ranges

System Performance The Performance Display Area graphs overall Symmetrix performance, and presents short- and

long-term information about I/O per second, hit ra tio, and write ratio. Users click check boxes in

the M ain Window to enab le/disable these individual line graphs, or display them simultaneously.

Figure 13. System Performance

Director Performance Symmetrix Manager monitors and presents comparat ive performance information for the Direc-

tors, with separate statistics for:

Disk Directors

SCSI Directors

Fibre Channel Directors

Parallel Channel Directors

ESCON Channel Directors

Remote Link Directors

Defining Performance Thresholds

Volume Performance Stat us and Graphs

SymmetrixPerformance Status


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Colored and patterned bar graphs simultaneously display the performance for individual director

types selected, with either short- or long-term performance views.

Figure 14. Director Performance

Disk Director performance compares:

Write ratio

Prefetch utilization percentage (percentage of the prefetched data used by the hosts)

Prefetch tasks percentage (compares read tasks to prefetch tasks)

I/Os per second of each director

SCSI Director, Fibre Channel Director, Para llel Channel Director, ESCON Channel Director, and

Remote Link Director performance compares:

Write ratio

H it Ratio

I/Os per second of each director

Symmetrix Logical Volume Symmetrix M anager captures Symmetrix logical volume statistics, allowing administrators to set

Performance thresholds, monitor alerts, and graph current performance values at the Symmetrix logical

volume level. Symmetrix Manager monitors and displays comparative performance of the

Symmetrix logical volumes, and measures:

I/Os per second

Total hit ratio

Write ratio

Read hit rat io

Throughput

The window displays each performance measurement separately. A button represents every active

device; its color indicates status relative to user-selected limits. Users can reset limits and Symmetrix

Manager can generate new performance information.

Green Device performs better than the lower of two user-selected variables

Yellow Performance between lower and upper limits

Red Activity exceeds upper limit


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Figure 15. Volum e Performance

The display window also graphs device performance. Sorting options (by volume number, name,

or statistical value) helps storage administrators track individual disk activity, check load balance,

and identify hot disks (e.g., disks with higher activity level).

Physical Disk Perform ance Administrators can use Symmetrix Manager to capture physical disk device statistics, set

thresholds, monitor alerts, and graph current performance values. This information allows

administrators to monitor and isolate performance bottlenecks on specific Symmetrix disks.

Administrato rs can view disk sta tistics by disk director, interface, or target, and evaluate read,

write, and tot al measures.

Read Read commands per second

Average read request size

Read throughput

Write Write commands per second

Average write request size

Write throughput

Totals Read/Write ratio

Total throughput

Note: Workload Analyzer also captures this information for historical analysis (see Chapter 11).

Propagation of Stat us The Symmetrix Manager component propagates status and performance information to the EMC

and Performance Contro lCenter Console in several ways:

Figure 16. Propagation of Status

All Symmetrix Status

Single

Symmetrix

Status

Enterprise Status

Volume Status


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Sending e-mail to a pre-selected address.

Paging a pre-determined phone number.

Notifying the EMC ControlCenter Console. The EMC ControlCenter Console constantly displays

the Symmetrix configuration. Any exceptions to the status change the color of the Symmetrix iconin the Console display box (green, yellow, red).

Notifying an Enterprise Management Framework. Integrating ControlCenter into an SNM P-

compliant enterprise management framework gives administrators a single point of enterprise

control and simplifies exception management on managed devices. After detecting an event

anomaly, ControlCenter passes the information directly to the framework.

NO TE: If an error occurs in the Symmetrix system, the service processor in the Symmetrix auto-

matically contacts EMC.

Advanced Performance Workload Analyzer, a post-processing tool, offers advanced performance analysis (e.g., historical

Analysis comparisons and trend analysis) that complements the realtime performance monitoring of

Symmetrix Manager. Chap ter 11 contains additional information.

Connectrix Manager The browser-based interface for EMC ControlCenter supports monitoring of all components

across the ESN. Clicking on the Connectrix icon allows administrato rs to launch Connectrix Man-

ager and native management tools for supported third-party switches and hubs. The Connectrix

Manager software consists of two components:

Connectrix Server consistently deploys fabric-wide management of multiple Connectrix directors.

Connectrix Manager provides element-specific management and contro l using graphical displays

of Connectrix front and rear views. Users click the various device components to manage tasks

(such as assigning protection/access, blocking/unblocking port access, monitoring performance,

event recording, and fabric configuration).


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Chapter 4

SRDF-TimeFinder Manager

Symmetrix Remote Data Facility (SRDF) and TimeFinder offer industry-leading information

protection solutions for disaster r ecovery and business continuance. SRDF-TimeFinder M anager

provides full user control of SRDF through a graphical user interface (GUI). The GUI allows

management of TimeFinder and SRDF as an alterna tive to the CLI included with the TimeFinder

and SRDF products.

SRDF-TimeFinder Manager can control and monitor SRDF and TimeFinder operations via a

UNIX or Windows platform.

M anaging SRDF In order to p rovide disaster recovery capabilities, SRDF maintains a mirror image of Symmetrix

systems data in a physically separate site. The SRDF/TimeFinder Manager option enables users to

query SRDF status and control SRDF operations. The SRDF GUI allows users to configure SRDF

attributes, and suspend and resume SRDF links and volumes.

The SRDF-TimeFinder Manager option allows effective and efficient control of SRDF information

protection activities because it:

Simplifies business continuance planning and testing.

Reduces backup/recovery costs while improving organization and utilization of enterprise data.

Enhances overall effectiveness and integrity of recovery procedures and application availability.

Strengthens competitive advantage by reducing the time and effort required for business recovery.

In event of an unp lanned outage, the SRDF-TimeFinder Manager option automates and acceler-

ates the full restoration of data center operation and critical business operations. During normal

operation, it facilitates access to identical copies of key business data , allowing parallel use of the

original data to deliver enhanced application performance and increased application availability.

SRDF Configurations

The SRDF information protection solution maintains a mirror image of data at the logical volume

level on a remote Symmetrix. Users can view the SRDF configuration, monitor status (including

dynamic status information during an in-progress SRDF operation), and perform SRDF opera-

tions. It displays both the source and targeted mirrored pa irs in an SRDF configuration, allowing

users to see a Remote Link Director Gr oup, its associated devices, and the relationships between

the source and target volumes.

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Figure 17. SRDF Configuration and Status Inform ation

Storage administrators can configure and manage SRDF operations for individual SRDF mirrored

pairs or groups of SRDF volumes. Administrators determine volume grouping (e.g., disks associ-

ated with a given database, or an application, or the e-mail system).

M anaging EMC TimeFinder By creating separa tely addressable mirrored volumes (e.g., BCVs), TimeFinder enhances enterprise

productivity and delivers optimal information p rotection. Splitting a BCV off from the standa rd

volume allows TimeFinder to create point-in-time copies. The instant availability of these copies

supports host applications and processes (e.g., workload compression, application development

and testing, file transfers and backup, and decision-support operations). TimeFinder uses the BCV

to restore data and execute a business recovery operation. Separately mirroring the BCV either

locally or remotely through SRDF provides additional protection.

EMC Tim eFinder Configurations

Users can configure, initiate, and monitor TimeFinder operations with the SRDF-TimeFinder GUI

via point-and-click operations. The GUI simplifies the set-up of groups of devices for monitoring

status or performing TimeFinder operations. An operation begins by clicking on one or more BCV-

standard volume icon pairs, then selecting a specific menu operation. The Windows GUI displays

multiple BCVs associated with a single standard, so users can produce a sophisticated information

protection strategy.

Figure 18. EMC TimeFinder Configuration


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TimeFinder Manager performs the following operations:

Establish a BCV pair

Re-establish a BCV pair

Restore from a BCV device

Restore a BCV device incrementally

Perform regular, differential, reverse, reverse differential, and instant splits

NO TE: Mirrored BCVs use differential and reverse splits. An instant split makes BCV data

immediately available to the host, and can enhance all varieties of splits. The EMC TimeFinder

Product Description Guide contains an in-depth description of BCV operations.


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Chapter 5

Configuration Manager

Configuration Manager gives users maximum control over their Symmetrix environment

allowing them to make configuration changes instantaneously to meet the needs of their evolving

environment. With Configuration Manager, customers can reallocate Symmetrix Logical

Devices (SLDs), configure SLDs, and assign SLD attr ibutes. Configurat ion M anager current ly

supports o pen systems hosts.

Reallocate SLDs Configuration Manager enable reallocation of Symmetrix Logical Devices by:

Moving a Symmetrix Logical Device from one host adapter to another, or from one port to another

on the same host adapter

Adding a SLD to particular host adapter and port

Removing a SLD from a particular host and port

Allocation involves selecting the device with the mouse and dragging it to the last device of the

director and port in the new location. CLI access to reallocation functions is also available.

Users can assign both configured and unconfigured devices with Configuration Manager.

Allocation involves selecting the device with the mouse and dragging it to the last device of the

director and port in the new location.

Figure 19. Configuration Manager SLD Reallocation

Configuration Manager preserves all data during this process. The administrator first assigns a

SLD then updates the host file system so tha t the host recognizes the new configuration.

Configure SLDs Configuration Manager allows to take a physical disk and create SLDs and metavolumes; these

functions are available via CLI. Mirro r protection levels can then be assigned to these newly cre-

ated SLDs and metavolumes.

Assign SLD att ributes Configuration M anager allows you to assign SLD attributes such as STD (standard), BCV, or DRV

via CLI. DRVs are used by Optimizer. Configuration Manager also allows users to swap sourceand target designations in an SRDF configuration. The data is preserved during this process.


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Chapter 6

Symmetrix Optimizer

Symmetrix Optimizer provides automa tic tuning for Symmetrix disk dr ives by balancing perfor-

mance and eliminating potential bott lenecks. Automat ic balancing of I/O activity across physical

drives reduces the effort and expertise required to achieve optimal Symmetrix performance. By

accessing the Symmetrix Quality of Service function th rough Symmetrix O ptimizer, users control

the BCV (TimeFinder), DRV (Optimizer) and SRDF copy pace.

Symmetrix Optimizer brings several advantages to open systems and mainframe performance

because it:

Introduces a smooth, automated process for disk drive load-balancing to replace a time-consum-

ing, error-prone manual approach.

Adapts proactively to changing application environments and provides optimum disk perfor-

mance.

Employs automatic, continual, long-term tuning to address problems before they occur.

Protects data during tuning operations, eliminating the risk inherent in host-based tuning methods.

Maximizes availability and associated revenues by avoiding disruption caused by manual, host-

based tuning efforts.

Reduces response time lags during peak I/O loads (e.g., the most critical revenue-generating peri-

ods).

Supports all OS platforms with a single tool.

Figure 20. Point-and-click end-user controls simplify the tuning process.

Self-Tuning High-demand disk drives experience excessive head movement, which slows read/write activity

and diminishes overall performance. Symmetrix Optimizer automat ically performs critical tuning

functions, balancing active Symmetrix logical volumes (hot spots) with low activity logicalvolumes (cold spots) across disk drives. By balancing seek activity and reducing contention among

drives, Symmetrix Optimizer improves throughput within the Symmetrix system and generates

optimal response times.


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Symmetrix Optimizer collects and analyzes Symmetrix logical volume activity, identifies high-

activity volumes that cause disk contention, and physically reconfigures the volume layout for

optimal disk drive performance by mirroring and then live-swapping the identified volumes.

User-Controllable Parameters Symmetrix O ptimizer gathers stat istics on Symmetrix logical volumes by making system calls to

the Symmetrix. Through Symmetrix Manager software, users set sampling and analysis criteria

that tailor Optimizers behavior to the unique requirements of the environment.

Users can define parameters tha t include:

Activating/deactivating Symmetrix Optimizer

Activating/deactivating Swap Approval

Sampling frequency

Number of samples to maintain in the database

Number of samples to collect between swaps

Sample collection exclusion times

Volume swap exclusion times

Symmetrix Logical volume swap eligibility and priority

Copy pace for BCV, DRV, and SRDF Volumes (Quality of Service feature)

Concurrent swaps up to four at one time

Symmetrix Optimizer employs a weighted algorithm to analyze the statistics. It seeks to minimize

the I/O activity on each physical disk and balance the activity across the disks by transparently

swapping the physical location of Symmetrix logical volumes.

Symmetrix O ptimizer first identifies two Symmetrix logical volumes for the swap, t hen copies

data to equ al size and emulat ion Device Reallocation Volumes (DRVs). The volumes remain

available during this procedure.

When both DRVs contain the data from th eir respective migrating volumes, the dat a is copied to

the new locations. Each volume is resynchronized with the DRVs and o ther mirrors.

Finally, Symmetrix Op timizer splits the swap DRVs from the logical volumes, making them

available for the next swap operation. The entire data swap process remains transparent to end

users and applications.

Symmetrix Optimizer protects data throughout the process and guarantees the transactions.

After the swap, da ta collection resumes and Symmetrix O ptimizer begins captur ing statistics

from the changed configuration. In accordan ce with established par ameters, Symmetrix O pti-mizer can choose to make another swap when appropr iate.

The default settings for O ptimizer allow for one swap every 24 hours. If a swap is not required

in a 24-hou r cycle, it does not perform a swap. Users can change the settings to allow a swa p-

ping level best suited for their environment (e.g., more or less swapping). Users can also spec-

ify if they would like concurrent swaps. Op timizer can perform up to 4 swaps at one time. In

order to perform more than one swap, users will require additiona l DRVs. On e will be

required for each size volume that is configured in the Symmetrix, multiplied by the number of

concurrent swaps. For example, if a customer decides that t hey would like to perform 3 swaps

at one time, and they have 4 GB and 9 GB Symmetrix logical volumes, that customer would

need three pairs of 4 GB DRVs and three pairs of 9 GB DRVs.

A swap log is also provided so that the user can determine what ha s been moved and to where.

This log is constantly updating itself and is always available to the customer through a

GUI interface.

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NO TE: Swapping changes only the back-end configuration; it does nothing to alter the front-

end configuration.

Figure 21. Symmetrix O ptimizer transparently reconfigures physical drives in real time.

Symmetrix Optimizer Optimizer includes the Quality of Service function, which allows users to control the copy pace of

Quality of Service TimeFinder, SRDF, and Symmetrix by sett ing priority levels for each logical volume.

Users can decide, for example, whether processing production application I/O is more time-

critical than Optimizer and TimeFinder functions. Then, they can lower the QoS settings on

DRVs and BCVs, which allows the pr oduction ap plication I/O to u se more of the internal Sym-

metrix resources.

Figure 22. Q uality of Service Capabilities.


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Chapter 7

ESN Manager

ESN M anager Overview ESN M anager brings dynamic organization and simplified management to Fibre Channel storage

networks. Centralized, heterogeneous access control for data volumes and the storage network

also allows configuration and monitoring capabilities for the entire SAN environment.

Administrato rs only need to manage data access once at the storage level instead of at every

server level.

Because Enterprise Storage Networks continue to grow in size and complexity, managers need

proper tools to avoid costly and time-consuming practices. ESN Manager allows administrators to

manage data access once, at the storage level, instead of multiple times at the server level. With an

intuitive GUI or CLI, volume access control, centralized zoning, and individual path management,

ESN Manager brings dynamic organization and simplified management to the ESN environment.

By streamlining management procedures and dramatically increasing the cost effectiveness of ITinvestments, ESN Manager helps reduce operational costs and minimize risk.

Figure 23. ESN Manager

Capabilities ESN Managers single interface allows administrators to:

Manage paths to storage using Volume Access Control and Zoning technologies.

Obtain a high level or detailed view of the SAN topology, with displays showing information about

Host Bus Adapters (HBAs), Fibre Channel switches, Symmetrix systems, Symmetrix FA ports, and

other devices on the storage network.

Configure and manage access to volumes using Volume Logix.

Partition the fabric into logical zones to control access with FibreZone, eliminating multiple man-

agement tools and command sets.

Create an optimal access control configuration for the storage network with the Autopath wizard,

while simultaneously performing volume access control and zoning functions.

Save and/or restore the SAN zoning information using archive wizards.

Standardize and automate the management of heterogeneous SANs by providing tools for gener-

ating usage reports.


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Topology Views

With an intu itive graphical user interface (GUI), ESN Manager provides consistent, easy-to-use

configuration of SAN devices in a storage networking environment. Similarly, text-based environ-

ments can use a command line interface (CLI). Both interfaces allow administrators to create a

detailed topology view of the storage network, one that displays all Fibre Channel devices and their

interconnections in the SAN topology.

Users can tailor topology views by filtering within the GUI display. Administrato rs can enter ele-

ments with a logical view of the paths between devices because the topology display shows all the

devices within the SAN. When expanded, this view shows the physical paths between devices.

Figure 24. W ith ESN Managers zoning capabilities, storage administrators can create and manage

sets of logical devices within a zone.

Increased Connectivity

Fibre Channel hubs and switches provide increased connectivity by allowing multiple server HBA

ports to connect to Symmetrix through a por t on a Fibre Adapter (FA).

Volume Access Functionality ESN Manager controls volume access through the mechanism of volume configuration manage-

ment (VCM) software*, which prevents multiple hosts from seeing and using the same storage vol-

umes. With VCM software, the FA filters each I/O and allows each host to access only those

volumes specified in the VCM database (VCMDB).

Volume access functionality combines Symmetrix microcode and a host-based GUI or CLI for vol-

ume access administration. The microcode controls access to Symmetrix volumes through the use

of the VCMDB that resides on the VCMDB volume on the Symmetrix. A single VCMDB controls

access for all FAs on a Symmetrix. The ESN Manager Administrator defines the contents of the

database that runs on Solaris, Windows 2000, and Windows NT.

Volume Confi guration Management

EMCs volume configuration management (VCM) software provides volume access and gives

administrato rs contro l of Fibre Channel access to Symmetrix volumes. The storage-based access

control method implemented by ESN Manager eliminates multi-host conflicts on the same port.


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ESN Manager

ESN M anager allows administrators to define a virtual dedicated channel that connects each host

with its own storage volumes in the Symmetrix, although many hosts may share the same path and

the same Symmetrix port .

Defin ing and Managing Access Control

Storage administrators use ESN Manager to define and manage access contro l on Symmetrix vol-

umes. This storage-based software application functions across an Enterprise Storage Network

(ESN) from one or many administrative stations. ESN Manager can:

Display ESN Manager objects graphically (Symmetrix systems, logical volumes, Fibre Channel

Directors, host computer servers, Fibre Channel host bus adapters) and the relationships between

these objects. (The ESN Manager Administrator can display an entire Fibre Channel volume con-

figuration in graphical form on a single screen.)

List ESN Manager objects and their relationships through a command line interface or graphical

user interface.

Assign and manage the access privileges that Symmetrix logical volumes maintain with host com-

puters connected through switches or hubs in a Fibre Channel topology.

Manage and modify properties associated with ESN Manager objects (for example, change the

name of a host).

Manage volumes on multiple Symmetrix systems from a single administration station.

Co-reside with Connectrix Manager on a client administration station.

Protecting Data EMCs solution for multi-initiator environments pro tects data in the Symmetrix where it resides.

Volume access software controls access to Symmetrix volumes from host servers and creates a

protected environment for Fibre Channel-Arbitrated Loop hubs or Switched Fabric sharing the

same port.

Because Windows NT assumes access to all drives sharing a port , ESN requires volume access soft-

ware for Windows N T switch and hub connectivity. Volume access neither replaces the need for

zoning nor manages any switch or hub components.

Implementing a Storage ESN Manager allows administrator s to configure and manage the access policy to volumes in the

Subsystem Access Symmetrix. Unlike error-prone, host-based access control mechanisms, ESN Manager employs a

Control Policy Symmetrix-based access control mechanism that avoids conflicts and monitors access directly from

the storage array. Administrators can define a virtual data path from each host to its storage devices

in the Symmetrix, although multiple hosts share the same Symmetrix port.

The Symmetrix records the connection, stores the world-wide name (WWN) in a Login Historytable, and bu ilds a filter listing the volumes available to that WWN through that FA port. The H BA

port then sends I/O requests for particular Symmetrix volumes to the FA port. Each request

includes the identity of the requesting HBA (to determine its WWN) and the identity of the

requested volume, including FA and Logical Unit Number (LUN).

ESN Manager processes each I/O request and verifies that the HBA can access that volume. If an

HBA lacks access to a volume, then an erro r message follows any request for access to that volume.

In this way, ESN Manager ensures data integrity in a multi-vendor SAN environment at the data

storage level.


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Representing a Configuration Graphically

The ESN Manager GUI employs browse and manage configurations to graph ically represent cur-

rent or work-in-progress configurations:

Browse configuration reflects the state of the Zoning and Volume Access databases for the currentonline configuration.

Manage configuration provides a snapshot of the last active configuration.

The Manage configuration allows administrators to change the volume access control. When satis-

fied with the changes made to the working view, they can commit the changes to the Z oning and/or

Volume Access database(s), overwrite the last active configuration, and activate the changes.

The ESN Manager GUI displays information that relates to the entire storage area network (SAN)

and uses different views and panes to describe the SAN configuration. ESN Manager gives admin-

istrators the ability to view and manipulate objects in the network using the different modes,

panes, and views.

NO TE: The GUI and the CLI provide the same control functions.

Creating the Storage Netw ork Zoning partitions a Fibre Channel switched environment. Zones create and manage subsets of

Access Control Policy logical devices (for example, HBAs and storage devices). Devices can only communicate with each

another in the same zone; any non-member device remains inaccessible to the others. By enabling

or disabling these zones, administrators can manipulate connectivity throughout the SAN in a

controlled manner.

Administrators use zoning to restrict access to shared stora ge networ k resources and provide

high levels of access control, performance, and availability. Restricting access to specific stor-

age ports reduces the time spent by each HBA in the discovery process and improves boot time

for every server.

Most Fibre Channel switches provide management utilities that allow zoning of specific switches.

Typically managed in a vendor-specific manner, switch zoning and other fabric control allows

each switch to store its own configuration data. While adequate when the SAN contains only one

or two switches, local switch management makes zoning a time-consuming process when admin-

istrators need to add more switches.

Integrating Zoning Functionality (Single-HBA Zon ing)

ESN Manager integrates zoning functionality, which a llows planning and deployment of the stor-

age network access control policy. A single-HBA zoning, for example, configures each HBA in its

own zone. The members of the zone include the H BA and one or more storage ports (for example,

a Symmetrix FA port) with the volumes that the HBA uses.

Single-HBA zoning provides a fast, efficient, and reliable means of controlling the HBA discov-

ery/login process. Without zoning, the HBA attempts to log in to a ll ports on the fabric during dis-

covery and during the HBAs response to a state change notification. Single-HBA zoning,

minimizes the time and Fibre Channel bandwidth required to process discovery and the state

change notification.

Meta Units ESN Manager allows users to create and manage super-sets of switches (or units) called meta

units, which consists of two or more units sharing a common zone configuration. Meta units

allow the immediate application of a single command to several units at once, instead of applying

the command multiple times to individual units. Figure 4 shows how H ost00 opera tes as a mem-

ber of two zones (Zone0 and Zone1) and both zones belong to a zone set called Config1, as

applied to Meta1. Config1 serves as the active zone set and performs backups. Administrators

could create another zone set (Config2) for application testing and apply it to both switches

because of the meta unit configuration. In large multi-switch fabrics, meta units greatly reduce the

time and effort required to change zoning configurations.


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Figure 25. Meta Unit

ESN Managers Zoning software eliminates the need to execute several commands for a task with

specific vendor-designed applications, while dramatically reducing switch maintenance and

replacement times. Administrators can use ESN Managers Refresh Zoning command to load

existing, centrally stored zoning configurations to new or replacement switches in the fabric,

reducing addition and replacement times.

Enforcing Access ESN Manager creates and manages access contro l policies to the storage subsystem and sto rage

Control Policies network. Volume Access Control and Zoning modules form the foundation of ESN Managers

functionality and additional software features maximize its volume access control and zoning

capabilities. These features Autopath, Command Line Interface, and Report Generation

maximize the management capabilities of ESN Manager.

Autopathing ESN Managers Autopath wizard simultaneously performs volume access control and zoning

functions, which allows administrators t o

Create an optimal access control configuration for the storage network automatically.

Handle switch zoning and volume access policy changes in one simple step.

Reduce the number of actions required to create paths between hosts and storage through the stor-

age network.

Execute functions, such as volume access control and zoning, in a single operation.

Path Creation

Path creation automa tes both the selection and the authorization of the data paths, enabling a host

to access Symmetrix volumes. When creating paths, administrators can choose the number of

paths to storage for each host*.

The Create Path command authorizes access to a Symmetrix volume from a specific host along a

set of selected paths, either direct connections or through switched fabrics. All physically con-

nected and manageable paths remain viable alternatives. Administrators can change the number

of paths from one path (minimum) to the number of paths physically available to the selected vol-

ume/s (maximum). The path selection policy and the number of connections to the HBA or FA

port d ictates the maximum number.

Zone0

Zone1

Meta1

Switch 1

Switch 2

Symmetrix

FA1

FA1

VCM

LUN2

LUN1

Host00

Host01

adapter0

adapter1


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When creating paths, administrators may create and/or modify existing zones and create zone

members. Although Autopath attempts to create paths within preexisting zones, new zones can

appear in the Topology view. Following standard EMC zoning best practices, Autopath only cre-

ates single-HBA zones.

Path selection policies in Autopath use informat ion in the Symmetrix to ba lance path a llocation

across the H BA and FA ports. The Autopath engine checks state informat ion to determine assigned

path authorizations for FA port(s) and HBA(s). The engine uses a simple, unweighted static round

robin algorithm. After choosing the criteria, the administrato r opt imizes and analyzes the results,

editing as necessary to meet specific configuration requirements.

Path Removal

Path removal automates both the selection and the removal of the authorizations that enable a host

to access a Symmetrix volume. Administrators can use the Autopath Remove Path Selection dialog

to edit the paths targeted for removal. When removing paths, administrators may purposely or

accidentally modify existing zones and/or remove zones and zone members. Autopath does not

allow administrators to zone ou t the ESN Manager host from accessing any FA of a Symmetrix.

Command Line Interface In addition to the GUI, ESN Manager includes a command line interface (CLI) for scripting man-

agement tasks. Administrato rs can:

Configure volume access control and zoning in the storage network using Access Control CLI and

Zoning CLI commands.

Obtain the same control functions through the GUI and the CLI versions, providing management

capability for hosts lacking a graphics terminal.

Specify the HBAs through which a host can access Symmetrix volumes using the Admin CLI

commands instead of the ESN Manager GUI.

The Admin CLI consists primarily of a group of commands called fpath commands. Administra-

tors can execute fpath commands at the command line, automate these tasks by executing them in

scripts or batch files, and use the Admin CLI to:

Initialize, restore, and back up a VCMDB

List, add, and remove entries

List and clear entries by FA and WWN

Rename hosts and verify name consistency

Administrators can use Zoning CLI commands instead of the ESN Manager GUI to configure zon-

ing in the storage network. The FibreZone CLI consists of fzone commands that execute at the

command line or in scripts or bat ch files to automate zoning tasks. The Zoning CLI follows left-

justified unique rules for command line syntax. With few exceptions, administrators need type in

only as many letters of the command as make it unique. Using the Zoning CLI, administrators can:

Manage zones, units, and zone sets

List, create, delete, and modify zone configurations

Backup and restore the Zoning database

NO TE: EMC recommends that administrators avoid simultaneous use of a GUI and a CLI because

of the increased possibility of database corruption. Data corruption could occur, for example, if

administrators attempt to modify the Volume Access database in the GUI while also running a

script tha t changes the database.


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Report Generation ESN Manager can produce different types of reports that display information about the ESN

topology. Each report provides information about a certain aspect of the storage and the

storage network.

ESN Manager provides customized reports for objects and configurations in the storage network

topology. All reports display as tables, but t he information varies depending on the type of object

selected. Administrators can view reports online, print them as a hard copy, or export them to a

comma-delimited format file (for example, Microsoft Excel or Visio). Administrators can view

reports in either M anage or Browse views, outpu t displays relevant to the view used.

The types of reports available for viewing include:

Cable Configuration Report

Connection Report

Host Configuration Report

Host Summary Report

Object Property Report

Path Repor t

Volume Report

Zoning Report


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Links View simplifies navigation around relationships. By selecting a particular tablespace, for

example, ControlCenter opens windows with the related table, database, database files, file

system, volume groups, logical volume, host device, Symmetrix device, Symmetrix disk drive,

and Symmetrix system. Users then select items from any window. Related windows update

automatically.

Symmetrix Configuration Mapping shows the layout of Symmetrix internal components.

Users can select a director, director port or logical volume; ControlCenter highlights all related

entities. Th e customizable Configuration Mapping display simplifies the relationships between

the logical structures presented to t he host an d the interna l Symmetrix configuration.

Figure 27. EM C ControlCenter Console with Resource View

View ing Tabs Resource View breaks down bar riers that inhibit smooth w orking relationships in the organi-

zations. Difficulties usually arise when systems, storage, and database administrators try to

understand their differing perspectives on stora ge locations of d atab ase, file systems, or ot her

objects. Resource View provides familiar concepts and terms, an d uses a single screen to view

information from each administrator' s perspective. Various IT functions see the relationships

among the system, storage, and database components, which improves planning, manage-

ment, and p roblem identification.

Physical, Logical, and Line of Business tabs tailor views of the storage system to meet user needs.

Physical Tab

The Physical tab (available with Symmetrix M anager) accesses the EMC ControlCenter Console

and shows the icon map. This view identifies connections among hosts and Symmetrix units. A

tree structure includes individual Symmetrix hosts, user groups, and CLARiiON systems.

Logical Tab

The Logical tab (a Resource View option) displays the data for all accessible Symmetrix and host

servers in a t ree structure. Clicking on each element expands the tree structure to the next level.

Presented in a row/column format, logical tab information resembles a standard database or

spreadsheet with capability for sorting by columns and or ganizing information by dragging and

dropping columns to different locations.


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Users can customize views to hide unnecessary fields or change the or der in wh ich they are

displayed. Users can export all information to tab-delimited format files in order to import

them to a spreadsheet or a report generation to ol.

Line of Business Tab

The Line of Business tab (a Resource View option) allows grouping of objects (any kind, at any

level within the host or Symmetrix) for assessment, analysis, and reporting based on business

needs. Users can set groupings by geographic regions, business applications, and server t ype, or

for individual customers within a shared environment. The Line of Business tab a llows users to

focus only on selected pieces of the storage environment within the enterprise.


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Chapter 9

Resource Availability

Resource Availability monitors and manages storage resources and dramatically affects

administra tors efficiency and pr oductivity. A single interface offers the capability to administer,

monitor, explore, automate, notify, report and autofix logical storage resources on MVS,

UNIX, and Windows NT /2000 systems. In addition, users can:

Establish management policies for host logical resources using ControlCenters monitor and notify

capabilities.

Choose a notification (e.g., e-mail) for proactive response to potential problems.

R

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Emc Controlctr Pdg