In July this year, an article appeared on Search Storage dot com dot au that promoted the benefits of Storage Virtualization. The benefit list could have been taken straight from an IBM SAN Volume Controller Redbook. And yet one gets the feeling that somehow Storage Virtualization is something new… something that only NOW should be considered. But is this true?
IBM has been doing Storage Virtualization since June of 2003. That’s over 8 years of commitment to Storage Virtualization. You can see the CNET news article that announced this function.
The software stack has grown considerably over 8 years with many new functions added such as RAID, Easy Tier, Thin provisioning and Volume Mirroring. All added without breaking the stack. The SCSI back end code has been enhanced every year as we add support for extra back end controllers. The SCSI front end code has been enhanced as well as well add code for extra host operating systems.
Dr Evil had nothing to do with the Storwize V7000, but he would have apprecaited what Project Quicksilver achived: 1 millions IOPS (not dollars). This got us thinking about SAS attached SSDs and the best way to use them.
In 2010 we combined our greatest strengths to enhance the SVC and bring a startling new product to the midrange storage space. We took our already mature, tried and tested and well loved SVC…. We took the RAID code out of the device adapters of the DS8000… we took the EasyTier code, developed by IBM in Almaden Resource Center and already field proven in the DS8000….. And then we created a new management GUI…. Inspired by the world leading GUI of the XIV…. We put it all into the SVC code, Creating a dramatic new release of that product. And then on top of that we created something new… exciting hardware!
So what are you looking at? At its simplest form… it’s a midrange storage controller… maybe ‘just’ a midrange product. But as with anything it’s the secret sauce that makes all the difference. Lets look at the building blocks.
Storage Virtualisation: Storwise V7000 and SVC Anthony Vandewerdt Storage Solutions Specialist
Is this new?Six reasons to adopt storage virtualisation Storage virtualisation reduces complexity Storage virtualisation makes it easier to allocate storage Better disaster recovery Better tiered storage Virtual storage improves server virtualisation Virtual storage lets you take advantage of advanced virtualisation features June 2011: http://searchstorage.techtarget.com.au/feature/Six-reasons-to-adopt-storage-virtualisation 2
Internal Storage External Storage Internal Storage 1 to 8/16 drives (HDD) to form an Array 1 Array Managed Disk (MD) External Storage Multiple Storage Subsystems 1 LUN Managed Disk (MDdisks) Up to 4,096 MDisks per cluster Max. External MDisk Size of 1 PB with approved controllers
Navigation, user indicator Quick navigation Action menus Main display area withembedded help Functionicons Status details Status indicators New GUI Icons with hover textActions or help on click
Create Hosts and Map Volumes Create Host Map Volumes to Host
29 Easy Tier SSDs (Solid State Drives) are still expensive Putting entire volumes on an SSD is wasteful
30 Data Migration by Volume and Sub-Volume HDD Storage Pool SSD Storage Pool Change Disk Class Change RAID Type Change RPM Change striping Hybrid Storage Pool (SSD & HDD) Existing Volume Based Data Migration Easy Tier Enabled in Hybrid Pool Easy Tier Automated Data Migration
Domino DB2 Exchange Easy Tier Process SVC/Storwize V7000 Node Volume Easy Tier Code DPA IOM DMP DM 31 Magnetic Disk SSD
32 Easy Tier – Automated Data Relocation Hybrid Storage Pool Host Volume Extent Virtualization MDisk from SSD Array Hot Extents Migrate Up Cold Extents Migrate Down MDisks from HDD Arrays
10 Gbps iSCSI Option 10Gbps iSCSI 8Gbps FC 1Gbps iSCSI New Node CG8 with optional 10 Gbps iSCSI
SANVolume Controller SANVolume Controller Fujitsu Eternus DX60, DX80, DX90, DX410 DX8100, DX8300, DX9700 8000 Models 2000 & 1200 4000 models 600 & 400, 3000 HitachiVirtual Storage Platform (VSP) Lightning Thunder TagmaStore AMS 2100, 2300, 2500 WMS, USP, USP-V Sun StorageTek HPStorageWorks P9500, MA, EMA MSA 2000, XP EVA 6400, 8400 EMC VNX VMAX CLARiiON CX4-960 Symmetrix IBM DS DS3400, DS3500 DS4000 DS5020, DS3950 DS6000 DS8000, DS8800 IBM Storwize V7000 IBMN series NEC iStorage Bull Storeway Pillar Axiom IBMXIV DCS9550DCS9900 TMS RamSan- 620 Compellent Series 20 NetApp FAS v6.2 Supported Environments* Linux(Intel/Power/zLinux) RHEL SUSE 11 Citrix Xen Server IBMBladeCenter IBM Power7 IBM AIX IBM i 6.1 (VIOS) HP-UX 11i Tru64 OpenVMS MicrosoftWindows Hyper-V IBM TS7650G 1024 Hosts SunSolaris VMware vSphere 4.1 IBM z/VSE Novell NetWare AppleMac OS SGI IRIX VAAI Native iSCSI* 1 or 10 Gigabit Point-in-time Copy Full volume, Copy on write256 targets, Incremental, Cascaded, Reverse, Space-Efficient, FlashCopy Mgr 8Gbps SAN fabric SAN Continuous Copy Metro/Global Mirror Multiple Cluster Mirror Easy Tier SSD Space-Efficient Virtual Disks New New New New Virtual Disk Mirroring 45
What about software integration? IBM Tivoli FlashCopy Manager (FCM) IBM Tivoli Storage Productivity Center (TPC) IBM TPC for Replication (TPC-R) BM Tivoli Storage Manager FastBack IBM Systems Director Microsoft Operations Manager (SCOM) Microsoft VSS VMWare vCenterPlugin 46