© Copyright IBM Corporation 2017.
Accelerate with IBM Storage:
Exploiting DS8000 with IBM i
Alison Pate
Executive IT Specialist
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
Agenda
• IBM i Storage Options
• DS8000 Architecture
• DS8000 with IBM i Synergy
• Performance Considerations
• Power HA
• Summary
• Backup material
• Implementation Best Practices
1
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
IBM i Storage Architecture
• Built on DB2 with heavy exploitation of Data in Memory
• Built on disk block size of 520 bytes
• Data is spread across all disks in disk pool
• Designed for ease of use and self-management
• Why does this matter when choosing a storage system?• Little skew • Random access patterns• Cache ‘unfriendly’• All-or-nothing copies (full system
copy)
2
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
Single level storage Auxiliary Storage Pool structure
3
Auxiliary Storage Pools (ASPs):
▪ ASPs are created from one or more disk units to isolate data / workload to the same storage area
▪ The system ASP (ASP 1) contains the load source disk unit and exists on every IBM i system
▪ Optionally user ASPs 2-32 or/and independent user ASPs (IASPs) 33-255 can be created
System ASP
User 2-32 iASP# 33-255
UDFS
Primary
Secondary
Pool groups for multiple databases
Primary Primary
Secondary
Secondary
The system database
is referred to as SYSBAS
Independent Auxiliary Storage Pools (IASPs):
▪ A primary disk pool and zero or more secondary disk pools which are grouped together and share the same database
▪ IASPs can be varied on/off (mount/unmount)
▪ Singly or as groups together
▪ IASPs can be made switchable between IBM i cluster nodes
Important: IBM i single-level storage
architecture requires that storage-
based replication for IBM i must either
be implemented on full-system or
IASP level.
Single Level Storage
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
XIV
DS8880
Native VIOS (virtual) Any supported storage
IBM i Native
VIOS
Power System
Spectrum Virtualize V9000, V7000
and SVC
NPIV
NPIV
vSCSI
IBM FlashSystem
NPIV
Storage Options
4
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
DS8880 Family Highlights
• Performance• Built on Power 8• High-Performance Flash Enclosure• Five generations of Easy Tier® and automated QoS management
• Storage synergy• Integration with IBM i for an infrastructure optimized for critical workloads
and high performance• Reliability and availability
• Designed for 99.9999% availability to keep critical applications “online all the time”
• The gold standard in business continuity solutions with deep integration with high-end server HA/clustering
• Economic Impact• Self-optimization and QoS management • Efficient architecture keeps hardware resources balanced and capacity
utilization high • Data Protection and Security
• Flexible replication services to address backup and business-continuity needs.
• Government-grade security with stronger encryption, advanced access control, and self-encrypting drives
• Ease of Use• Self optimization features to redirect IT staff to more important initiatives• Advanced GUI keeps administrators productive and happy
5
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
IBM POWER and System Storage DS8000
• DS8000 is IBM’s Flagship Disk System and is built on over 50 years
of enterprise class innovation & tens of thousands of systems sold
• IBM DS8000 Leads in IBM i attached external disk
• IBM Power servers and storage are designed together to work
together
• IBM is best positioned to deliver support for IBM Power
Systems innovation first and often does long before
competition can
• Integration at every phase
• Design
• Development
• Testing
• Customer Support
• Tight collaboration yields many benefits in
performance, availability, resiliency, lower
cost, etc…
6
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
Seven Generations of the DS8000 Family
7
Replication and Microcode Compatibility
2010
POWER6+
DS8800
2004
POWER5
DS8100
DS8300
2009
POWER6
DS8700
2006
POWER5+
DS8300 Turbo
2012
POWER7
DS8870
2013
POWER7+
2015
POWER8
DS8870 DS8880
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
IBM i and DS8000 Synergy 2001 - 2017
• Full System HyperSwap
• Live Partition Mobility and HyperSwap
• Variable LUN sizes
• PowerHA - ACS integration with CSM
• Increased integration of IBM i performance
tools with DS8000
• IBM i OS based ‘hot data’ ASP Balancer
and DB2 media preference support for
DS8000 Solid State Drives (SSD) and
EasyTier
• PowerHA NPIV Virtual I/O Server with
DS8000
• Full support of Virtual I/O Server (VIOS)
and PowerHA
• PowerHA + DS8000 copy services end-to-
end integration
• Common Smart-IOA fiber for disk and tape
• Smart fiber I/O Adapter (IOPless) 6.1 (++
performance)
• Tagged Command Queuing and Header Strip Merge (+++ performance)
• Common one-stop POWER/DS8000 support
• 16Gb fiber
• Advanced ‘DS8000 on IBM i’ education series
• Storage on IBM i Redbooks
• BRMS native support for FlashCopyenvironment
• Boot from San
• DSCLI - DS Command Line Interface –provides IBM i control
• Additional LUN sizes for increased flexibility
• Copy Services for IBM DS8000 (a.k.a. Toolkit)
• Disk Magic and IBM i Performance Tools coordination
• Enhances cache algorithms for iSeries benefits all OS’s
8
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
7.5
2004
•DS8100/DS8300
4-2010
•Easy Tier
•Thin Provisioning
•Quick Init
•2TB nearline SATA
•Multiple GM sessions
10-2009
•DS8700 with Power6 controller
•PCI-E internal fabric
•Increased Cache/NVS
10-2010
•DS8800
•Power6+
•All 2.5” SAS-2 drives
•8GB HA and DA
1.0
5-2011
•Easy Tier2
•IO Priority Manager (open)
•Resource Groups
•New GUI
•16TB LUN
•New Business Class option
DS8700 / DS8800 include all functional enhancements up to R6.3
DS8100 / DS8300 includes all functional
enhancements up to R4.3
▪ HyperPAV
•Storage Pool Striping
•Space Efficient FlashCopy
•Dynamic Volume Expansion
• Extended Address Volumes
•Intelligent Write Cache
•Full Disk Encryption (FDE)
•Remote pair FlashCopy
▪ Thin Provisioning
•Quick init
•zHPF Multi-track support
4.3 5.0 5.1 6.0 6.1 6.2
4-2012
•Encryption for SSD and NL-SAS
on DS8800
•Easy Tier4
•400GB SSD
•Thin Provisioning for all copy services
Note: not all enhancements are included
6.3 7.0 7.1 8.27.2 7.3 7.4
5-2015
•16Gb FCP/FICON
•Fabric Priority
•Forward Error Correction
•Dynamic Routing
•zHPF distance performance
•T10 Diff for AIX 16Gb HBA
•OpenStack Kilo support
•GUI Performance Monitoring
•RESTful API
DS8870 include all functional enhancements up to R7.5
7-2009
11-2011
•3TB nearline SAS
•Add’l expansion frame and 1,536 drives
•Easy Tier3
•I/O Priority Manager (CKD)
•zHPF QSAM BSAM BPAM
•1 TB EAV
•DB2 list pre-fetch optimizer
•Global Mirror Collision Avoidance
11-2012
•DS8870 with Power 7
controller
•Increased Cache / NVS
•All FDE drives
•RoHS 2013
•Energy savings
•Support of the American National
Standards Institute's (ANSI)
T10 Data Integrity Field (DIF) standard
6-2013
•Easy Tier V
•Server, App, Heat Map Transfer
•VMware
•VAAI, vSphere, SRM
•zSynergy
•Global Mirror Pause
with Consistency
11-2013
•DS8870 with Power 7+ controller
•1.2TB and 4TB FDE drives
•OpenStack
•VMware VWC
•Easy Tier Server Cluster
6-2014
•High Perf Flash
Enclosure
•Easy Tier VI
•200GB & 800GB SSD
•OpenStack Enhancement
s
•Multi-target Mirroring
12-2014
•HPFE in Expansion Frame
•Flash Performance Accelerator
•Multi-target PPRC
•Easy Tier VII
•zHyperWrite
•600GB 15K and 1.2TB SSD
•New GUI
•Multiple Incremental FlashCopy
Relationships
•Global Copy Collision
Avoidance
10-2015
•POWER8
•Improved rack power system
•New I/O bay interconnect
•Improved I/O enclosure bays
•Standard industrial rack
packaging
•Small form factor Hardware
Management Console (HMC)
•New advanced function license
packaging
DS8880
8.0 8.1
5-2016
•DS8888 all Flash
•RAID 10 for HPFE
•KIMP support
•LDAP support for CSM
•SuperPAV
•DB2 CastoutAccelerator
•ESE for CKD
•Small extents
•ESE space release for GM
•Remote access and package offload
•OpenStack Mitaka
•GUI Updates
•New RESTful APIs
8.1.1
07-2016
•HPFE support 800 GB Flash cards
•DS8870 Model Conversion to 3 phase DS8886
•Full support for Small Extents and Thin Provisioning
•Display Copy Services Pokeables
and Product Switches via CSM
10-2016
•HPFE Gen 2
•Models 984/84E, 986/86E,985/85E
•400GB, 800GB, 1.6 TB and 3.2 TB Flash capacity options
•RAID 6 default for all drives
•User supplied Digital Certificates for Authentication
•Extent level Space Release with DFSMSdss
•Support configurable HMC firewall
•DSCLI support for z/OS
•Improved IU pacing for FICON
•Read from MM secondary
•Space Release with Copy Services
•PPRC Standard to ESE
DS8000 Just Keeps Getting Better
9
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.© Copyright IBM Corporation 2017 10
Performance
Performance
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
Performance Objectives
• Provide predictable and consistent performance at the most cost effective point
• Easy performance management/minimize tuning
• Easy performance reporting
11
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
IBM Disk Magic - Performance planning Integration
12
IBM/BP delivered custom performance and
capacity sizing for your workloads
IBM i Performance Tools Report Data
POWER Workload Estimator
Manual Input
Modeled Workload
Output
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
Memory and IO hierarchy
DRAM
Flash
Enterprise Disk
Nearline Disk
Cost
SpeedNano
seconds
Micro
seconds
Milli
seconds
13
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
Source: Worldwide External Enterprise Storage Systems Forecast, 2016–2020, Publication Date: IDC Jul , 2016
Future view of the All-flash and Hybrid-flash market …
All Hard
Disk Drive
Hybrid
Flash
All
Flash5.64% 11.20% 16.28%
20.38% 24.05% 27.38%
29.28%
42.11% 41.70% 42.64%
43.85% 44.66% 45.63%
45.25%
14
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
DS8880F all-flash family
• Lowest entry cost for midrange
enterprises
• Built with IBM Power Systems
S822
• 6-core POWER8 processor per
S822
• Up to 256 GB Cache (DRAM)
• Up to 32 Fibre channel/FICON
ports
• From 6.4TB to 154 TB of flash
capacity
• High performance for large
enterprises
• Built with IBM Power Systems
S824
• From 8 to 24-core POWER8
processor per S824
• Up to 2 TB Cache (DRAM)
• Up to 128 Fibre channel/FICON
ports
• From 6.4TB to 614.4 TB of flash
capacity
• Highest performance for faster
insights
• Built with IBM Power Systems
E850
• From 24 to 48-core POWER8
processor per E850
• Up to 2 TB Cache (DRAM)
• Up to 128 Fibre channel/FICON
ports
• From 6.4TB to 1.22 PB of flash
capacity
DS8884FBusiness class
Efficiently designed to meet a wide range of business needs, from small to large enterprises
DS8886FEnterprise class
DS8888FAnalytics class
16
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
DS8880F All-Flash Database Open Performance Summary
DS8884F DS8886F DS8888F
KIOPs @ 0.3 ms 450 1500 2000
KIOPS @ Peak 523 1832 2418
Values based on OLTP database
simulation benchmarks:
70% read, 30% write, 4KB IOs
and 50% read cache hit
0
500
1000
1500
2000
2500
3000
DS8884F DS8886F DS8888F
KIO
Ps
@ 0.3 ms Peak IOPs
17
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
IBM System Storage Easy Tier
18
• Places data on the correct hardware tier
• Optimize your hardware investment
• Maximize application performance
• Automated and granular:
• Automated movement of data based on actual
workload performance
• Virtually no administrative effort:
• Easy Tier optimizes storage tiering without
laborious manual tuning
• Supported on DS8000, Spectrum Virtualize, and
Storwize family
• Slightly different implementations
New generation of smart storage that intelligently
adapts to application workloads
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
▪ Easy Tier learning of
application IO patterns –
Heat Map
▪ Migration plan
▪ 24 hour cycle for
inter-tier migration
▪ 6 hour cycle for intra-
tier migrations
▪ Extent migration –
background task
Solid-state
Enterprise - FC / SAS
Nearline - SAS / SATA
IO pattern
Heatmap and
I/O Density Report
Migration Plan
Easy Tier - Workload Learning
19
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
Easy Tier Performance with IBM i
20
DS8700 600GB 10K rpm disks plus SSD
managed by Easy Tier
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
IBM i Exploitation of SSD with DS8000
21
• IBM i can recognize SSD-backed LUNs on DS8000
• Manually – ASP placement
• DB2 Media Preference
• ASP Balancer
• BRMS Migration
• Easy Tier
• Transparent to server
• Minimal implementation effort
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
DB2 Media Preference
Tag objects to be placed on SSD
Great option if you know which files are hot for the application
• Performance Explorer data can be used to find hot files
• Data available via PEX – read latency by job
22
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
DS8886 Performance – IBM i Client Data
24
600GB 15K rpm disks plus HPFE and SSD
Managed by Easy Tier with Media Preference
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
Performance Monitoring Integration
• Focus on end-to-end performance monitoring and investigation for
an IBM i and DS8000 environment
• IBM i 7.1 adds a new category to IBM i Collection Services
• *EXTSTG – new collection performance metrics from DS8000
• Requires DS8000 R4 or later firmware
• Data can be presented in graphs using iDoctor today
POWER IBM iDS8000
Cache
Ranks
Links
LUN
Mem
CPU
Other
PerformanceStatistics
IBM i Collection Services SAN Infrastructure
Performance monitoring integration and ease of use
25
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.© Copyright IBM Corporation 2017
Average DS to IBMi latency
29
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
Disk Performance on IBM i
30
• Understand your workload
• Use the sizing tools (Work with IBM or Business Partner)
• Disk Magic
• Sue Baker’s IOA sizing spreadsheet
• Plan logical configuration as well as hardware configuration
• No measureable difference in performance between native, NPIV, and VIOS
attachments
• Isolation or sharing?
• Balance IO activity across all resources
• Stripe and share everything
• Isolate IBM i workloads for performance protection
• Easy Tier can work well with IBM i
• Use minimum 20% Flash capacity guideline
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.© Copyright IBM Corporation 2017 31
High Availability and
Disaster Recovery
High AvailabilityDisaster Recovery
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
High Availability and Disaster Recovery
32
• Increase system up-time
• Reduce backup times
• Reduce planned outages
• Maintenance windows, Backup windows, Software upgrades
• Reduce time to recover in the event of a Disaster (RTO)
• Reduce RPO in the event of a disaster
• Increase backup frequency
• Automate Recovery
• Reduce overheads of Disaster Recovery provision
• Combined HA/DR, Reduce costs, Reduce manpower
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
Copy Services
• Point in Time copy – within the same storage system
• FlashCopy
• Snapshot
• Remote Replication – between storage systems
• Synchronous (Metro Mirror/PPRC)
• Asyncronous (Global Mirror)
• Multiple site replication
• Metro/Global Mirror Cascading
• Multi-target PPRC (3 and 4 site)
33
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
Copy Services Architectures for IBM i
34
Full Copy resiliency
– Full system copy
– Required IPL – ‘crash’ consistency
– Manual operation or toolkit management
Network
PROD (source) HA/DR (target)
LPAR-1
Ext. Storage
LPAR-2
Ext. Storage
iASP based replication
– PowerHA and copy services
– PowerHA LUN Level Switching
– Clustering and E2E automation
– IASPs eliminate need for IPL
– HA, DR and Backups
PowerHA
Network
PROD (source) HA/DR (target)
LPAR-1
Ext. Storage Ext. Storage
LPAR-2
IASP IASP
34
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
Flash Copy
Automation available from IBM lab services for DS8000, Spectrum Virtualize, and XIV
Tape
System
Prod
LUNs
Flash
Copy
BRMS
Full system copy requires an IPL of the Backup LPAR
BRMS support for Flash Copy
Production System/LPAR Backup System/LPAR
35
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
Flashcopy for backup timeline
Production processing
Production processing
Quiesce
system
Quiesce
systemIPL resume
Production processing
IPL resume
Production
processing
Backup to tape
Backup to tapeIPL Backup
system
Flashcopy
Traditional Backup
Backup with FlashCopy
36
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
Full System Copy
37
Tape
System
Full
System
Full
System
Target
Local site
Remote Copy
Metro Mirror (or Global Mirror)
Full
System
Flash
BRMS
Backup System i will require an abnormal IPL for unplanned outages.
Planned outages require an IPL of the Backup LPAR
Production Site Backup Site
Automation
available from
IBM lab services
37
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
An IBM delivered, end-to-end solution for HA, DR and on-line backups
End
-to
-En
d S
olu
tio
n IBM i Clusters and Cluster Resource Services
DSCLI DS Command Line Interface
HA Switchable Resources - XSM
Geographic
Mirroring
Switched
IASPs
OS Resiliency Technology
Metro
MirrorFlash
Copy
Global
Mirror
LUN Level
Switching
Storage Resiliency Technology
PowerHA SystemMirror for i
LabServices
ACS
DS8000 and Storwize
PowerHA SystemMirror for i
38
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
Power HA with Storage Replication
39
Admin domain
IASP
SysbaseSysbase
Production
LPARHA/DR
LPAR
Replication
• Only the IASP is replicated/switchable
• Replication target is offline until failover when it is varied online to the
HA/DR system
• Each IBM i LPAR is running it’s own version of the System (SYSBAS)
IASP
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
✓ Comprehensive HA/DR solutions for multi-site or data center
✓ Shared storage clustering technology
✓ Provides automation for ease of use
✓ Implemented in IBM i, SLIC, and storage management
✓ Data replication is provided by IBM storage
✓ FlashCopy enables off line tape backup
✓ Designed for regular role swap operations and automated
failovers
✓ Developed and supported by IBM
PowerHA for IBM i
40
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
PowerHA Enterprise Edition HyperSwap solution for High Availability
• Two-site DS8K HyperSwap PowerHA Enterprise Edition cluster configuration
• Combine with Live Partition Mobility for Server and Storage HA
• Server outage management via a PowerHA cluster operation
• Storage outage management via a HyperSwap switch
• Full System or IASP implementation
Application
Metro Mirror
Site one Site two
HyperSwap
42
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
PowerHA Tools for IBM i
▪ Complement and extend PowerHA and IBM Storage capabilities for HA/DR
▪ Helps reduce business risk and improve resiliency for critical applications
▪ Simplifies set up and automation of HA/DR and backup solutions
▪ Reduces cost of maintaining and regular testing of an HA/DR environment
▪ Facilitates flexible deployment options for single or multi-site protection
▪ Assures consistent deployment using best practices and experienced consultants
PowerHA Tools for IBM i is a service offering from IBM Systems Lab Services
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.© Copyright IBM Corporation 2017
PowerHA
Tools for IBM iCapability Benefit
DS
80
00
Sto
rwiz
e
Inte
rna
l
Smart Assist for
PowerHA on IBM i
Provides operator commands and scripts to supplement
PowerHA installation and ongoing operations for IASP enabled
applications.
Simplifies deployment and ongoing management of high
availability for critical IBM i applications.
Yes Yes Yes
IASP Manager(Automated recovery with faster IASP-level vary on, no system IPL)
Flashcopy Automates Flashcopy of IASP for daily off-line backup with
seamless BRMS integration.
Increases application availability by reducing or
eliminating backup window for routine daily backups.
Yes Yes
LUN-level Switching Simplifies deployment and automates switching of an IASP
between IBM i cluster nodes in one data center.
Enables a business continuity manager to provide a
simple, single site HA solution.
Yes*
Remote Copy Simplifies initial deployment and automates ongoing server and
storage management of two-site Metro Mirror or Global Mirror
HA or DR solutions. Requires IASP enabled applications..
Enables a business continuity manager to provide
seamless operation of integrated server and storage
operations for two-site high availability or disaster
recovery.
Yes
Metro Global Mirror
(MGM)
Extends PowerHA functionality to provide three-site
server/storage replication solution combining Metro Mirror for
HA with cascading Global Mirror for DR. Requires IASP
enabled applications and IBM Tivoli Productivity Center for
Replication (TPC-R).
Enables a business continuity manager to further lower
business risk and maximize business resilience for highly
critical business applications that require three-site
HA/DR protection.
Yes
Multi-Target Copy
(MTC)
Extends PowerHA functionality to provide three-site
server/storage replication solution for HA/DR broadcast
topologies including two Metro Mirror relationships or a Metro
Mirror and Global Mirror relationship. Requires IASP enabled
applications and IBM Copy Services Manager (CSM).
Enables a business continuity manager to further lower
business risk and maximize business resilience for highly
critical business applications that require three-site
HA/DR protection.
Yes
Full System Manager(Automated recovery, requires full system IPL on target LPAR)
XIV
Flashcopy Automates full system Flashcopy for daily off-line backup with
integrated support for BRMS without IASP-enabled
applications.
Increases application availability by reducing or
eliminating backup window for routine daily backups.
Enables an entry solution while planning IASP
enablement.
Yes Yes Yes
Remote Copy Simplifies initial deployment and automates ongoing server and
storage management of two-site Metro Mirror or Global Mirror
HA or DR solutions. without IASP-enabled applications.
Enables a business continuity manager to provide
seamless operation of integrated server and storage
operations for HA or DR. Enables an entry solution while
planning IASP enablement.
Yes Yes
PowerHA Tools for IBM i
*DS8000 support available with PowerHA Tools for IBM i 6.1 or earlier, included in PowerHA SystemMirror 7.1
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
PowerHA Service Offering Description
IBM i High Availability Architecture
and Design Workshop
An experienced IBM i consultant will conduct a planning and design
workshop to review solutions and alternatives to meet HA/DR and
backup/recovery requirements. The consultant will provide an architecture
and implementation plan to meet these requirements.
PowerHA for IBM i Bandwidth Analysis An experienced IBM i consultant will review network bandwidth requirements
for implementing storage data replication. IBM will review I/O data patterns
and provide a bandwidth estimate to build into the business and project plan
for clients deploying PowerHA for IBM i.
IBM i Independent Auxiliary Storage Pool
(IASP) Workshop
An experienced IBM i consultant will provide jumpstart services for migrating
applications into an IASP. Training includes enabling applications for IASPs,
clustering techniques, plus managing PowerHA and HA/DR solution options
with IASPs.
PowerHA for IBM i Implementation Services An experienced IBM consultant will provide services to implement an HA/DR
solution for IBM Power Systems servers with IBM Storage. Depending on
specific business requirements, the end-to-end solution implementation may
include a combination of PowerHA for IBM i and/or PowerHA Tools for IBM i,
plus appropriate storage software such as Metro Mirror, Global Mirror and/or
Flashcopy.
IBM Lab Services Offerings for PowerHA for IBM i
For more information on PowerHA Tools for IBM i offerings and services,
contact: Mike Gordon [email protected] 507-253-3477
www.ibm.com/systems/services/labservices [email protected]
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.© Copyright IBM Corporation 2017 46
Implementation
Implementation
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
Implementation planning
• Understand the workload and the environment
• Isolation or sharing?
• Balance IO activity across all resources
• Stripe and share everything
• Use as few pools as possible to preserve required level of isolation
• Isolate Critical workloads
• Performance and Availability
• Exploit IOPM to protect disk resources for critical workloads
• Isolate IBM i workloads?
• Apply common sense
47
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
Logical Configuration – as important as the hardware
• LUN size
• Number and size of LUNS
• 100-200 GB is optimal
• Use Disk Magic
• Size appropriate number of LUNS per fiber channel port
• IOA configuration on Power Server
• Driven by addressing, performance, and availability
• Use Sue Baker’s Spreadsheet to determine IOA ports required
• Isolation or Sharing?
• Apply Common Sense
• DS8000 HA ports not impacted by addressing
• Use Disk Magic
48
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
Replication considerations
• Account for replication requirements in sizing
• Remote Copy ports
• Replication ‘overhead’ (Disk Magic)
• Target Configuration
• Global Mirror journals
• Dedicate DS8000 HBA cards for replication (minimum of 2 cards)
• Use of Extent Space Efficient LUNs for Global Mirror
• Small extents recommended
• 30-50% provisioned
49
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
POWER Server
2 port IOA
Switch
DS8000
4 port HA 4 port HA
2 port IOA2 port IOA 2 port IOA 2 port IOA
LPAR A - 128 LUNs
LPAR B - 128 LUNs
LPAR C - 64 LUNs
Benefits of NPIV – without NPIV
51
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
POWER Server
2 port IOA
Switch
DS8000
4 port HA 4 port HA
2 port IOA
Virtualized
connections
Benefits of NPIV – with NPIV
52
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
NPIV Guidelines and Limits
• Virtual IOA limits
• NPIV 64 LUNs/virtual path
• Multiple virtual paths from different LPARS can share the physical path
• Recommend up to 3 virtual paths/physical path
• Use Sue Baker’s Fiber Channel planning guide
• Consider adding HA ports and HBA cards for ease of management
• Aka Apply Common Sense
• Sharing optimizes hardware use: balance against requirements for isolation
53
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
Why external disk?
High Availability Disaster Recovery
Consolidation
And flexibility
Encryption Centralized Storage
Management
Virtualization
Performance
54
Washington Systems Center - Storage
© Copyright IBM Corporation 2017 Accelerate with IBM Storage.
Further References for DS8000
• External disk on IBM i redbook
• http://www.redbooks.ibm.com/abstracts/sg247120.html?Open
• DS8000 Copy Services for IBM i redbook
• http://www.redbooks.ibm.com/abstracts/sg247103.html?Open
• DS8000 Copy Services for IBM i with VIOS redbook
• http://www.redbooks.ibm.com/abstracts/redp4584.html?Open
• DS8000 and IBM i Hints and Tips
• http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/TD103095
• PowerHA and DS8000 Integration
• http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/PRS4361
• PowerHA options for IBM I
• http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/PRS4021
55