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IBM System Storage SAN Volume Controller and Storwize V7000 Best Practices and Performance Guidelines

by An Chen Jon Tate Tiago Moreira Candelaria Bastos, Jana Jamsek, Danilo Morelli Miyasiro, Antonio Rainero

May 2018

Intermediate to advanced

428 pages

13h 53m

English

IBM Redbooks

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May 2018, Sixth Edition
1.1 SAN topology general guidelines1.1.1 SAN performance and scalability1.1.2 ISL considerations1.2 SAN topology-specific guidelines1.2.1 Single switch SAN Volume Controller/Storwize SANs1.2.2 Basic core-edge topology1.2.3 Edge-core-edge topology1.2.4 Full mesh topology1.2.5 IBM Spectrum Virtualize and IBM Storwize as a SAN bridge1.2.6 Device placement1.3 SAN Volume controller ports1.3.1 Slots and ports identification1.3.2 Port naming and distribution1.4 Zoning1.4.1 Types of zoning1.4.2 Prezoning tips and shortcuts1.4.3 SAN Volume Controller/Storwize internode communications zones1.4.4 SAN Volume Controller/Storwize storage zones1.4.5 SAN Volume Controller/Storwize host zones1.4.6 Hot Spare Node zoning considerations1.4.7 Zoning with multiple SAN Volume Controller/Storwize clustered systems1.4.8 Split storage subsystem configurations1.5 Distance extension for remote copy services1.5.1 Optical multiplexors1.5.2 Long-distance SFPs or XFPs1.5.3 Fibre Channel over IP1.5.4 SAN extension with Business Continuity configurations1.5.5 Native IP replication1.6 Tape and disk traffic that share the SAN1.7 Switch interoperability
2.1 Storage controller path selection2.1.1 Round robin2.1.2 MDisk group balanced and controller balanced2.2 Considerations for DS8000 series2.2.1 Connectivity considerations2.2.2 Defining storage2.3 Considerations for IBM XIV Storage System2.3.1 Connectivity considerations2.3.2 Host options and settings for XIV systems2.3.3 Volume considerations2.3.4 Additional considerations2.4 Considerations for IBM FlashSystem A9000/A9000R2.4.1 Connectivity considerations2.4.2 Volume considerations2.4.3 Additional considerations2.5 Considerations for IBM Storwize V7000/V5000/V37002.5.1 Connectivity considerations2.5.2 Defining internal storage2.5.3 Volume considerations2.6 Considerations for IBM FlashSystem 9002.6.1 Connectivity considerations2.6.2 Defining storage2.6.3 Volume considerations2.7 Considerations for storage subsystem compression and deduplication capability2.8 Considerations for third-party storage with EMC VMAX and Hitachi Data Systems
3.1 Availability considerations for storage pools3.2 Selecting storage subsystems3.3 Selecting the storage pool3.3.1 Capacity planning consideration3.3.2 Selecting the number of arrays per storage pool3.3.3 Selecting LUN attributes3.4 Quorum disk considerations3.4.1 IP Quorum3.4.2 IP Quorum requirements3.5 Tiered storage pool3.6 Adding MDisks to existing storage pools3.6.1 Checking access to new MDisks3.6.2 Persistent reserve3.6.3 Renaming MDisks3.7 Rebalancing extents across a storage pool3.8 Removing MDisks from existing storage pools3.8.1 Migrating extents from the MDisk to be deleted3.8.2 Verifying the identity of an MDisk before removal3.8.3 Correlating the back-end volume with the MDisk3.9 Remapping managed MDisks3.10 Controlling extent allocation order for volume creation3.11 Considerations when using Encryption3.11.1 General considerations3.11.2 Hardware and software encryption3.11.3 Encryption at rest with USB keys3.11.4 Encryption at rest with key servers
4.1 Overview of volumes4.2 Guidance for creating volumes4.3 Striped versus sequential volumes4.3.1 Use cases of sequential volumes4.4 Thin-provisioned volumes4.4.1 Compressed volumes4.4.2 Space allocation4.4.3 Thin Provisioning considerations4.4.4 Limits on virtual capacity of thin-provisioned volumes4.5 Volume migration4.5.1 Image-type to striped-type migration4.5.2 Migrating to image-type volume4.5.3 Migrating with volume mirroring4.6 Preferred paths to a volume4.7 Changing the preferred node within or across I/O groups4.8 Volume throttling4.8.1 Managing throttles for volumes4.9 Volume cache mode4.9.1 Changing the cache mode of a volume4.9.2 Underlying controller remote copy with IBM Spectrum Virtualize and Storwize cache-disabled volumes4.9.3 Using underlying controller FlashCopy with IBM Spectrum Virtualize and Storwize cache-disabled volumes4.9.4 Using IBM Spectrum Virtualize or Storwize with FlashSystem4.10 VMware Virtual Volumes4.11 Additional considerations4.11.1 Volume protection4.11.2 Volume resize
5.1 Introduction to copy services5.1.1 FlashCopy5.1.2 Metro Mirror and Global Mirror5.1.3 Global Mirror with Change Volumes5.1.4 Volume Mirroring function5.2 FlashCopy5.2.1 FlashCopy use cases5.2.2 FlashCopy capabilities overview5.2.3 FlashCopy functional overview5.2.4 FlashCopy planning considerations5.3 Remote Copy services5.3.1 Remote copy functional overview5.3.2 Remote Copy network planning5.3.3 Remote Copy services planning5.3.4 Remote Copy use cases5.3.5 1920 error5.4 Native IP replication5.4.1 Native IP replication technology5.4.2 IP partnership limitations5.4.3 VLAN support5.4.4 IP Compression5.4.5 Remote copy groups5.4.6 Supported configurations5.4.7 Native IP replication performance consideration5.5 Volume Mirroring5.5.1 Read and write operations5.5.2 Volume mirroring use cases5.5.3 Mirrored volume components5.5.4 Volume Mirroring synchronization options5.5.5 Volume Mirroring performance considerations5.5.6 Bitmap space for out-of-sync volume copies
6.1 Configuration guidelines6.1.1 Host levels and host object name6.1.2 Host cluster6.1.3 The number of paths6.1.4 Host ports6.1.5 Port masking6.1.6 Host to I/O group mapping6.1.7 Volume size as opposed to quantity6.1.8 Host volume mapping6.1.9 Server adapter layout6.2 N-Port ID Virtualization6.3 Host pathing6.3.1 Multipathing Software6.3.2 Preferred path algorithm6.3.3 Path selection6.3.4 Path management6.3.5 Non-disruptive volume migration between I/O groups6.4 I/O queues6.4.1 Queue depths6.5 Host clustering and reserves6.5.1 Clearing reserves6.5.2 IBM Spectrum Virtualize MDisk reserves6.6 AIX hosts6.6.1 HBA parameters for performance tuning6.6.2 Configuring for fast fail and dynamic tracking6.6.3 SDDPCM6.7 Virtual I/O Server6.7.1 Methods to identify a disk for use as a virtual SCSI disk6.7.2 UDID method for MPIO6.8 Windows hosts6.8.1 Clustering and reserves6.8.2 Tunable parameters6.8.3 Guidelines for disk alignment using Microsoft Windows with IBM Spectrum Virtualize volumes6.9 Linux hosts6.9.1 Tunable parameters6.10 Solaris hosts6.10.1 Solaris MPxIO6.10.2 Symantec Veritas Volume Manager6.10.3 DMP multipathing6.10.4 Troubleshooting configuration issues6.11 VMware server6.11.1 Multipathing solutions supported6.11.2 Multipathing configuration maximums6.12 Monitoring6.12.1 Load measurement and stress tools

7.1 Easy Tier7.1.1 Easy Tier concepts7.1.2 Four tiers Easy Tier and Read Intensive flash drive7.1.3 SSD arrays and Flash MDisks7.1.4 Disk tiers7.1.5 Easy Tier process7.1.6 Easy Tier operating modes7.2 Easy Tier implementation considerations7.2.1 Implementation rules7.2.2 Limitations7.2.3 Easy Tier settings7.3 Monitoring tools7.3.1 Offloading statistics7.3.2 Interpreting the STAT tool output7.3.3 IBM STAT Charting Utility
8.1 Generic monitoring8.1.1 Monitoring with the GUI8.1.2 Monitoring using quotas and alert8.2 Performance Monitoring8.2.1 Performance monitoring with the GUI8.2.2 Performance monitoring with IBM Spectrum Control8.2.3 Important metrics for debugging8.2.4 Performance support package8.3 Metro and Global Mirror monitoring with IBM Copy Services Manager and scripts8.3.1 Monitoring MM and GM with scripts8.4 Monitoring Tier1 SSD
9.1 Documenting IBM Spectrum Virtualize and SAN environment9.1.1 Naming conventions9.1.2 SAN fabric documentation9.1.3 IBM Spectrum Virtualize documentation9.1.4 Storage documentation9.1.5 Technical support information9.1.6 Tracking incident and change tickets9.1.7 Automated support data collection9.1.8 Subscribing to IBM Spectrum Virtualize support9.2 Storage management users9.3 Standard operating procedures9.3.1 Allocating and deallocating volumes to hosts9.3.2 Adding and removing hosts9.4 IBM Spectrum Virtualize code update9.4.1 Current and target IBM Spectrum Virtualize code level9.4.2 IBM Spectrum Virtualize Upgrade Test Utility9.4.3 IBM Spectrum Virtualize hardware considerations9.4.4 Attached hosts preparation9.4.5 Storage controllers preparation9.4.6 SAN fabrics preparation9.4.7 SAN components update sequence9.4.8 IBM Spectrum Virtualize participating in Metro Mirror or Global Mirror9.4.9 IBM Spectrum Virtualize update9.4.10 IBM Spectrum Virtualize disk drive update9.5 SAN modifications9.5.1 Cross-referencing HBA WWPNs9.5.2 Cross-referencing LUN IDs9.5.3 HBA replacement9.6 Hardware upgrades for IBM Spectrum Virtualize9.6.1 Adding IBM Spectrum Virtualize nodes to an existing cluster9.6.2 Upgrading IBM Spectrum Virtualize nodes in an existing cluster9.6.3 Moving to a new IBM Spectrum Virtualize cluster9.6.4 Splitting an IBM Spectrum Virtualize cluster9.7 Adding expansion enclosures9.8 I/O Throttling9.8.1 General information on I/O Throttling9.8.2 I/O Throttling on front end I/O control9.8.3 I/O Throttling on backend I/O control9.8.4 Overall benefits of using I/O Throttling9.8.5 Considerations for I/O Throttling9.8.6 Configuring I/O Throttling using the CLI9.8.7 Configuring I/O Throttling using the GUI
10.1 Starting troubleshooting10.1.1 Recommended actions and fix procedure10.2 Remote Support Assistance10.3 Common issues10.3.1 Host problems10.3.2 SAN events10.3.3 Storage subsystem issues10.3.4 Port masking issues10.3.5 Interoperability10.4 Collecting data and isolating the problem10.4.1 Collecting data from IBM Spectrum Virtualize10.4.2 SDDPCM and SDDDSM data collection10.4.3 Additional data collection10.5 Recovering from problems10.5.1 Solving IBM Spectrum Virtualize events10.5.2 Solving host problems10.5.3 Solving SAN issues10.5.4 Solving back-end storage issues10.5.5 Common error recovery using IBM Spectrum Virtualize CLI10.6 Health status during upgrade and known error10.7 Call Home Web and Health Checker feature10.7.1 Health Checker
11.1 Evaluate compression savings using Comprestimator11.2 Evaluate workload using Disk Magic11.3 Verify available CPU resources11.4 Configure a balanced system11.5 Standard benchmark tools11.6 Compression with FlashCopy11.7 Compression with Easy Tier11.8 Compression on the backend11.9 Migrating generic volumes11.10 Mixed volumes in the same MDisk group
IBM i Storage managementSingle-level storageIBM i response timePlanning for IBM i capacityConnecting SAN Volume Controller or Storwize to IBM iSetting of attributes in VIOSDisk drives for IBM iDefining LUNs for IBM iData layoutFibre Channel adapters in IBM i and VIOSZoning SAN switchesIBM i MultipathBoot from SANIBM i mirroringCopy services considerationsHyperSwap considerations
Business continuity with Stretched ClusterBusiness continuity with Enhanced Stretched ClusterBusiness continuity with HyperSwapThird site and IP quorumComparison of business continuity solutions
Secure Shell (SSH)SMI-SHTTPS and RESTful API on IBM Spectrum ControlHTTPS on IBM Spectrum VirtualizeConclusions
IBM RedbooksOther publicationsOnline resourcesHelp from IBM

Content preview from IBM System Storage SAN Volume Controller and Storwize V7000 Best Practices and Performance Guidelines

Scripting examples

This topic describes some universal ways of accessing IBM Spectrum Virtualize system by using scripts. These methods can be easily applied to reporting and checking tasks. Though most of the current operating systems and almost any modern programming language have resources to accomplish this, this section concentrates mostly on UNIX/Linux environments with Bourne-again shell (bash) for simple examples, and on Python version 3 for advanced cases.

Important: You use and modify these scripts at your own risk.

This section ...

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