accelerate with ibm storage: exploiting ds8000 with ibm i · pdf filethe system asp (asp 1)...

© Copyright IBM Corporation 2017.

Accelerate with IBM Storage:

Exploiting DS8000 with IBM i

Alison Pate

Executive IT Specialist

[email protected]

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



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



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



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



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



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



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



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



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


© Copyright IBM Corporation 2017 Accelerate with IBM Storage.© Copyright IBM Corporation 2017 10

Performance

Performance



Performance Objectives

• Provide predictable and consistent performance at the most cost effective point

• Easy performance management/minimize tuning

• Easy performance reporting

11



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



Memory and IO hierarchy

DRAM

Flash

Enterprise Disk

Nearline Disk

Cost

SpeedNano

seconds

Micro

seconds

Milli

seconds

13



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



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


S824

• From 8 to 24-core POWER8

processor per S824

• Up to 2 TB Cache (DRAM)


ports

• From 6.4TB to 614.4 TB of flash

capacity

• Highest performance for faster

insights


E850

• From 24 to 48-core POWER8

processor per E850

• Up to 2 TB Cache (DRAM)


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



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



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



▪ 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



Easy Tier Performance with IBM i

20

DS8700 600GB 10K rpm disks plus SSD

managed by Easy Tier



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



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



DS8886 Performance – IBM i Client Data

24

600GB 15K rpm disks plus HPFE and SSD

Managed by Easy Tier with Media Preference



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


© Copyright IBM Corporation 2017 Accelerate with IBM Storage.© Copyright IBM Corporation 2017

Average DS to IBMi latency

29



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



High Availability and

Disaster Recovery

High AvailabilityDisaster Recovery



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



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



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



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



Flashcopy for backup timeline

Production processing


Quiesce

system

Quiesce

systemIPL resume


IPL resume

Production

processing

Backup to tape

Backup to tapeIPL Backup

system

Flashcopy

Traditional Backup

Backup with FlashCopy

36



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



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



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



✓ 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



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



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


© 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



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]

mailto:[email protected]

http://www.ibm.com/systems/services/labservices



Implementation

Implementation



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



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



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



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



POWER Server

2 port IOA

Switch

DS8000

4 port HA 4 port HA

2 port IOA

Virtualized

connections

Benefits of NPIV – with NPIV

52



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



Why external disk?

High Availability Disaster Recovery

Consolidation

And flexibility

Encryption Centralized Storage

Management

Virtualization

Performance

54



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

http://www.redbooks.ibm.com/abstracts/sg247120.html?Open

http://www.redbooks.ibm.com/abstracts/sg247103.html?Open

http://www.redbooks.ibm.com/abstracts/redp4584.html?Open

http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/TD103095

http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/PRS4361

http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/PRS4021

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