Veritas Cluster Server Deep Divevox.veritas.com/legacyfs/online/veritasdata/IA B06.pdffor DR of entire service IA B06:VCS Deep Dive 25 SYMANTEC VISION 2013 Virtual Business Service

Veritas Cluster Server Deep Dive

Anthony Herr Product Manager, Information Availability

SYMANTEC VISION 2013

Disclaimer

Any information regarding pre-release Symantec offerings, future updates or other planned modifications is subject to ongoing evaluation by Symantec and therefore subject to change. This information is provided without warranty of any kind, express or implied. Customers who purchase Symantec offerings should make their purchase decision based upon features that are currently available.

2 IA B06:VCS Deep Dive


Tiers of Availability

Disaster Recovery

High Availability

Just-In-Time Availability

Application Management

IA B06:VCS Deep Dive 3


Tiers of Availability

Disaster Recovery

High Availability

Just-In-Time Availability

Application Management

Business Continuity



Tiers of Business Continuity

• Application Management

– Manage applications without in-depth application knowledge

– Ensure an application stays online even without a failover target

• Single Pane-of-Glass Configuration and Control

– Allow an enterprise view and manageability across UNIX/Linux/Windows hosts

– Enables notification, health checks and reporting over the enterprise

• Multi-Tier Application Support

– Enable top to bottom visibility of an application that crosses OS boundaries

– Provide cross application dependencies on different cluster

• High Availability and Disaster Recovery

– Ensure an application (physical or virtual environment) maintains its availability

– Supports an application’s Service Level Agreement (SLA)



Agenda


Updated VCS Features 1

I/O Fencing 2

Multi-Tier Application Support 3

Availability in Virtualized Environments 4

A Sneak Peak at Upcoming VCS Features 5


Updated VCS Features



How does VCS Monitor Applications?

• Legacy(Poll Based) Monitoring

– Checks to see if the application is online or offline over an interval of time

– Attributes for VCS monitoring which are controlled per resource type:

• MonitorInterval when the application is online (default 60 sec)

• OfflineMonitorInterval when the application is offline (default 300 sec)

• MonitorTimeout is the amount of time given to a monitor process before giving up (default 60 sec)

– Resources are monitored on all systems they are configured to run on

• If an Oracle database is configured to run on a 3 node cluster then each of the three systems will validate the state of the resource based on the current resource state—online/offline

– Each instance of a resource is monitored

• If there are 20 mount resources in a service group, then 20 monitors will be run per system in the cluster based on the current resource state—online/offline



Faulting…

Traditional Monitoring Framework

Most Clustering Solutions Poll based Monitoring

Resources Being Monitored

• Time to Detect • CPU Cost for polling • Limits number of Resources

From polling to asynchronous monitoring Faster failure detection

Polling


Faulted


Intelligent Monitoring Framework

Veritas Cluster Server (Introduced in version 5.1 SP1)

Resources Being Monitored

From polling to asynchronous monitoring Faster failure detection

Asynchronous


Registering…

Intelligent Monitoring Faulted

• Immediate fault detection • Zero polling overhead • Automatic Enablement


IMF Enabled Agents for UNIX/Linux:

• VCS 6.0.1 – OpenIMF

– DiskGroup Agent

• VCS 6.0

– Virtualization based agents

• Solaris Zones

• AIX WPAR

– Application agents

• Sybase

– IMF updates

• Agent Framework update (Custom Agent support

• Support for IMF-PCV

Prevention of Concurrency Violation

Application Agent with MonitorProcesses

• VCS 5.1 SP1

– Process based agents

• Physical environments, containers

– IMF is enabled for Process agents

running within a container

• Oracle agent, Netlsnr agent

• CVMvxconfigd

• DB2 agent with VCS 5.1SP1RP1

– Mount based agents

• Mount, CFSMount

– Application agent

• Using PidFiles or MonitorProcess for Application Agent monitoring

IMF support is continually expanding as updates to agents are introduced in quarterly agent packs



IMF coverage for Windows

– GenericSerivce

– ServiceMonitor

– IP

– NIC

– MountV

– Mount

– VMDg

– Oracle

– NetLsnr

– Process

– RegRep

– SQLServer2005

– SQLAgService2005

– SQLOlapService2005

– MSDTC

– SQLServer2008

– IIS

– ExchService2007

– Exchange2010DB

• VCS 6.0



From detection to prevention of concurrent application Reduced administrative overhead and data risk


Concurrency Violation Detection

N1 (Active)

N2 (Standby)

Concurrency Violation

App App Reactive

• Concurrency Detection Delayed • Offline Monitoring • Protection Reactive

http://www.iconfinder.net/icondetails/32667/128/


From detection to prevention of concurrent application Reduced administrative overhead and data risk


Concurrency Violation Prevention

N1 (Active)

N2 (Standby)

Concurrency Violation

App App

• Concurrency Detection Immediate • IMF Offline Monitoring • Protection Proactive

Proactive



I/O Fencing IA B06:VCS Deep Dive 15


From disk based to network based arbitration Reduced data risk in more environments

SCSI3-Persistent Reservation Based Data Protection

Coordinator Disks

N1 (Active)

N2 (Standby)

Data Disks

Winner


• SCSI3-PR Data Protection • Membership Arbitration • Supports CPS and Coordinator Disks



From disk based to network based arbitration Reduced data risk in more environments

Coordination Point Server Based Protection


• CP Servers used for Multiple Clusters • Focused on Environments without SCSI3 support

Coordinator Point Servers

N1 (Active)

N2 (Standby)

Data Disks

Winner



I/O Fencing Protecting against Split-Brain

Membership Arbitration Split-Brain Protection

• On membership change, each subcluster will elect a racer node to race for the CP Servers

• The first racer node to reach CP server will remove the registration of other racer node from CP server

• The racer node which has its registration on greater than ½ of the configured CP servers is the winner

• The losing racer node alerts all losing nodes in the subcluster to panic, resolving the network partition


Coordinator Point Servers (CPS)

Winner

APP APP



From neutral to preferred fencing Avoid unnecessary application failover

Traditional Fencing Preferred Fencing


N1 (Active)

N2 (Standby)

Needless failover to handle network split

APP

N2 (Down)

N1 (Active)

APP

N1 (Down)

N2 (Active)

APP

N1 (Active)

N2 (Standby)

N1 (Active)

N2 (Standby)

Preferred Node

Arbitration in favor of preferred node

APP

APP


Multi-tier Application Support IA B06:VCS Deep Dive 20


Multi-Tier Applications & Services

Database

Application

Web server

Billing

DB

FS IP

VVR

Service Group

VCS

App

IP

Service Group

VCS

Web

VM

Service Group

Web

VM

Service Group

ApplicationHA

Veritas Cluster Server HA/DR

Veritas Cluster Server HA

Symantec ApplicationHA

app app app

Veritas Operations Manager



Transition to Virtual Business Service Seamlessly

Database SG

Application Server SG

Web Server SG

Billing Virtual Business Service


Start/Stop Order

Inter-cluster fault policy

Database

Application

Web server

Billing

app app app

DB

FS IP

VVR

Service Group

VCS

App

IP

Service Group

VCS

Web

VM

Service Group

Web

VM

Service Group

ApplicationHA




How Virtual Business Service Works Start/Stop Orchestration

Communication Flow Between Clusters

Apache1_sg

Oracle_Apps_sg

Oracle_sg


VBS

VBS

VBS

START

START

START

Simplicity • Single sign-on • VM start/stop • Also through CLI

START


http://www.iconfinder.com/icondetails/8938/128/cog_gear_preferences_system_icon




How Virtual Business Service Works High Availability

Fault Propagation Between Clusters

Apache1_sg

Oracle_Apps_sg

Oracle_sg


VBS

VBS

VBS

Configurable Fault Reaction • Soft • Firm • Restart

Automatic Fault Propagation • No external brain • No heartbeats • Secure

Soft

Restart






VBS

VBS

VBS

VBS

VBS

VBS


How Virtual Business Service Works Disaster Recovery

Leveraging VCS Global Clusters for Service Level DR

Apache1_sg

Oracle_Apps_sg

Oracle_sg

Billing Production VBS

Flexibility • Production & DR can have

different configurations

Billing DR VBS

START

START

START

Apache2_sg

Oracle_Apps2_sg

Oracle2_sg

STOP

STOP

VCS HA/DR

DR

STOP START

No new infrastructure • Leverages existing Global Cluster

for DR of entire service









Virtual Business Service Unparalleled Support Matrix

Operating Systems

Solaris

HP-UX

AIX

Linux

Windows

Virtualization

VMware

OracleVM, Zones

WPAR, LPAR

KVM

Hyper-V

High Availability

VCS 5.1, 6.0

VCS 5.1 SP1 (Unix)

VCS 5.1 SP2 (Win)

ApplicationHA 5.1 SP2

ApplicationHA 6.0

Databases

Oracle

Sybase

SAP

DB2

MySQL

Applications

Informatica

WebSphere

Microsoft Exchange

WebLogic

PeopleSoft

Replication

Veritas Replicator

Oracle Dataguard

EMC SRDF

NetApp SnapMirror



Availability in Virtualized Environments IA B06:VCS Deep Dive 27


Virtualization brings challenges for visibility and availability of applications


• Application manageability

• OS and application visibility

Application Control & Visibility

VMware ESX

VM C

OS

VM B

SQL

OS

VM A

ORA

OS

• Reduce downtime

• Reduce outage during OS & application patching

Application Recovery

• Application relationships

• Physical and virtual

Multi-tier Application Management

VMware ESX

VM C

OS

VM B

ISS

OS

VM A

ORA

OS

VMware ESX

VM C

OS

VM B

ISS

OS

SQL

VM A

ORA

OS

VMware ESX

VM C

OS

VM B

ISS

OS

SQL

VM A

ORA

OS

VMware ESX

VM C

OS

VM B

ISS

OS

SQL

VM A

ORA

OS

• Application Management • Application Protection • Cross-Tier Service Protection


HOST Veritas Cluster Server

VM1

VM2

VMx

Veritas Cluster Server & Symantec ApplicationHA Application Availability in Virtualized Environments

App1 App2 Appx

Symantec Application

HA


HA


HA

Application Availability

Infrastructure Availability

ApplicationHA Support

• Solaris LDOM • Red Hat KVM • AIX DLPAR


SYMANTEC VISION 2013 IA B06:VCS Deep Dive 30

VM3

OS

VM6

OS

VM1

OS

VM4

OS

VMware ESX

VMware ESX

VCS

VMware HA VMware HA

VMware ESX

VMware HA

SQL1 SQL1

ApplicationHA ApplicationHA ApplicationHA

Jboss SAP1 SAP1 SQL1 IIS

OS

ORA1 ORA1

VM2

OS

ORA1 ORA1

VCS

Configured on Windows and Linux VMware Virtual Machines

Enables Wizard Based Auto Configurations

Provides Application protection within the Virtual Machine

Managed through a vSphere plug-in or Veritas Operations Manager (VOM)

Works in conjunction with VMwareHA

Supports VMware vMotion

ORA1

Symantec Availability with VMware Virtual Machines


Using the power of VCS to control VM access to storage


Graceful Switchover:

• When the application SG is switched from VM1 to VM2

– The offline routine of VMwareDisks detaches the disks from VM1

– The online routine on the failover target node then attaches the disks to VM2.

• VCS also supports:

―DRS

―SRM

―vMotion

PrivateLinks

VM1 Boot VM2 Boot

SQL Data

Shared Datastore

Detach Data Disks

VM1

SQL

ESXi 1

Offline SQL

Attach Data Disks

to VM2

Online SQL

VM1

SQL

ESXi 1

VM2

SQL

ESXi 2

VM2

SQL

ESXi 2


VCS Upcoming Features IA B06:VCS Deep Dive 32


SFHA 6.1 Beta Program

Beta Program Options Download Beta Program

– Install on your site

Sales Led Customer Enablement Beta Program

– Cloud VMs

Customer Ease of Use Program

- Symantec Connect Group

https://www-secure.symantec.com/connect/groups/storage-foundation-and-veritas-cluster-server-61-beta-program

See the VCS Vision Booth for more info

SFHA Certification


Thank you!

Copyright © 2012 Symantec Corporation. All rights reserved. Symantec and the Symantec Logo are trademarks or registered trademarks of Symantec Corporation or its affiliates in the U.S. and other countries. Other names may be trademarks of their respective owners. This document is provided for informational purposes only and is not intended as advertising. All warranties relating to the information in this document, either express or implied, are disclaimed to the maximum extent allowed by law. The information in this document is subject to change without notice.


Anthony Herr

[email protected]

Documents

Veritas Cluster Server Deep Divevox.veritas.com/legacyfs/online/veritasdata/IA B06.pdffor DR of entire service IA B06:VCS Deep Dive 25 SYMANTEC VISION 2013 Virtual Business Service