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IBM System Storage SAN Volume Controller, IBM Storwize V7000, and IBM FlashSystem 7200 Best Practices and Performance Guidelines

by Jon Tate, Tiago Moreira Candelaria Bastos, Jon Herd, Sang-hyun Kim, Sergey Kubin, Dirk Peitzmann, Antonio Rainero

December 2020

Intermediate to advanced

514 pages

16h 53m

English

IBM Redbooks

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February 2020, Seventh 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 Internal storage types2.1.1 NVMe storage2.1.2 SAS-attached drives2.1.3 Internal storage considerations2.2 Disk and flash arrays2.2.1 Supported RAID types2.2.2 Array considerations2.2.3 Compressed array monitoring2.3 External storage2.3.1 Storage controller path selection2.3.2 Considerations for compressing and deduplicating back-end2.4 Controller-specific considerations2.4.1 Considerations for DS8000 series2.4.2 Considerations for IBM XIV Storage System2.4.3 Considerations for IBM FlashSystem A9000/A9000R2.4.4 Considerations for Storwize family and FlashSystem 91002.4.5 Considerations for IBM FlashSystem 9002.4.6 Pathing considerations for third-party storage with EMC VMAX and Hitachi Data Systems2.5 Quorum disks2.5.1 IP Quorum
3.1 Introduction to Pools3.1.1 Standard Pool3.1.2 Data Reduction Pools3.1.3 Standard Pools versus Data Reduction Pools3.2 General considerations for Data Reduction Pools3.2.1 Data Reduction Pools3.3 Storage pools planning considerations3.3.1 Planning for availability3.3.2 Planning for performance3.3.3 Extent size considerations3.3.4 External pools3.4 Tiered storage pool and Easy Tier3.4.1 Interaction between Easy Tier and garbage collection in DRP3.5 Operations with pools3.5.1 Creating Data Reduction Pools3.5.2 Adding external MDisks to existing storage pools3.5.3 Renaming MDisks3.5.4 Removing MDisks from existing storage pools3.5.5 Remapping managed MDisks3.6 Considerations when using Encryption3.6.1 General considerations3.6.2 Hardware and software encryption3.6.3 Encryption at rest with USB keys3.6.4 Encryption at rest with key servers3.7 Data Reduction Pools Best Practices3.7.1 DRP with Storwize V7000 Gen3/NVMe drives and DRP3.7.2 DRP and external storage considerations3.7.3 DRP provisioning considerations3.7.4 Standard and DRP pools coexistence3.7.5 Data migration with DRP
4.1 Overview of volumes4.2 Guidance for creating volumes4.3 Thin-provisioned volumes4.3.1 Compressed volumes4.3.2 Deduplicated volumes4.3.3 Capacity reclamation4.3.4 Space allocation4.3.5 Thin Provisioning considerations4.3.6 Limits on virtual capacity of thin-provisioned volumes4.4 Mirrored volumes4.4.1 Write fast failovers4.4.2 Read fast failovers4.4.3 Maintaining data integrity of mirrored volumes4.5 HyperSwap volumes4.6 VMware virtual volumes4.7 Cloud volumes4.7.1 Transparent cloud tiering configuration limitations and rules4.7.2 Restore to the production volume4.7.3 Restore to a new volume4.8 Volume migration4.8.1 Image-type to striped-type migration4.8.2 Migrating to image-type volume4.8.3 Migration from standard pools to Data Reduction Pools4.8.4 Migrating from Fibre Channel connections to RDMA over Ethernet connections between nodes4.8.5 Migrating with volume mirroring4.9 Preferred paths to a volume4.10 Changing the preferred node moving a volume between I/O groups4.11 Volume throttling4.12 Volume cache mode4.13 Additional considerations4.13.1 Volume protection4.13.2 Volume resize
5.1 Introduction to copy services5.1.1 FlashCopy5.1.2 Metro Mirror and Global Mirror5.1.3 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 special 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 configuration examples5.4.7 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 layout6.1.10 Considerations for NVMe over Fibre Channel host attachments6.1.11 Considerations for iSER host attachments6.2 N-Port ID Virtualization6.3 Host pathing6.3.1 Multipathing Software6.3.2 Preferred path algorithm6.3.3 Path selection6.3.4 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 tuning6.7 Virtual I/O server6.7.1 Methods to identify a disk for use as a virtual SCSI disk6.8 Windows hosts6.8.1 Clustering and reserves6.8.2 Tunable parameters6.9 Linux hosts6.9.1 Tunable parameters6.10 Solaris hosts6.10.1 Solaris MPxIO6.10.2 Symantec Veritas Volume Manager6.10.3 DMP multipathing6.11 VMware server6.11.1 Multipathing solutions supported6.11.2 Multipathing configuration maximums

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 Performance monitoring with IBM Storage Insights8.3 Capacity metrics for block storage systems8.3.1 Storage system capacity metrics8.3.2 Pool capacity metrics8.3.3 Volume capacity metrics8.4 Creating Alerts for IBM Spectrum Control and IBM Storage Insights8.4.1 Alert Examples8.4.2 Alert to monitor backend capacity: Physical allocation8.5 Important metrics8.6 Performance support package8.7 Metro and Global Mirror monitoring with IBM Copy Services Manager and scripts8.7.1 Monitoring MM and GM with scripts8.8 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 and IBM Storwize V7000 Gen3 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 cluster9.6.5 Upgrading IBM Storwize V7000 2076-724 nodes in an existing 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 Checker10.8 IBM Storage Insights10.8.1 SI Customer Dashboard10.8.2 Customized dashboards to monitor your storage10.8.3 Creating Support Tickets10.8.4 Updating Support Tickets10.8.5 SI Advisor10.9 Out of Physical Space (OOPS) monitoring and recovery10.9.1 Monitoring10.9.2 Recovery
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 Pool
IBM i Storage managementSingle-level storageIBM i response timePlanning for IBM i storage capacityStorage connection 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 considerations
Business continuity with Stretched ClusterBusiness continuity with Enhanced Stretched ClusterBusiness continuity with HyperSwapThird site and IP quorumComparison of business continuity solutions
IBM RedbooksOther publicationsOnline resourcesHelp from IBM

Content preview from IBM System Storage SAN Volume Controller, IBM Storwize V7000, and IBM FlashSystem 7200 Best Practices and Performance Guidelines

Back-end storage

This chapter describes aspects and practices to consider when internal and external back-end storage is planed and managed.

Internal storage consists of NVMe FlashCore Modules and drives, SAS flash and spinning drives and NL-SAS drives.

External storage is provided to IBM Storwize V7000 or SAN Volume Controller from a separate IBM or third-party storage system.

Important: On 11th February 2020 IBM announced the arrival of SAN Volume Controller SA2 and SV2, and IBM FlashSystem 7200 to the family.

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Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.