External Storage on IBM i Overview Jana Jamsek

IBM Storage Systems IBM i and Storage systems IA DS 8000 V 7000 SSD Archive SSD IBM i SVC SSD VIOS Tape Libraries & Drives DS 4000 DS 5000 XIV SSD Protec. TIER DS 6000 Note: The shown connections with VIOS mean VIOS vscsi © 2011 IBM Corporation

IBM Storage Systems 4 th-gen. DS 8000 enterprise disk system The IBM POWER processor has been behind the success of IBM enterprise storage beginning with the Enterprise Storage Server in 1999 2004 2006 2009 2010 POWER 5+ POWER 6+ DS 8000 Turbo DS 8700 DS 8800 Binary Compatibility DS 8800 builds on a market-proven, reliable code base! © 2011 IBM Corporation

IBM Storage Systems DS 8000 family models Two base models with scalable controllers and capacity DS 8700 • POWER 6 controllers (2 -way and 4 -way) • 4 Gb/s and 2 Gb/s host and device adapters • 3. 5” Enterprise Fibre Channel drives DS 8800 • POWER 6+ controllers (2 -way and 4 -way) • 8 Gb/s host and device adapters • 2. 5” Enterprise SAS-2 drives © 2011 IBM Corporation

IBM Storage Systems DS 8800 hardware Drive enclosures Primary Power Supplies Management Console POWER

IBM Storage Systems DS 8800 – Model 951 base and model 95 E expansion frames (front) 10 Enclosures 240 Drives 20 U Base frame (951) 14 Enclosures 336 Drives 28 U 1 st expansion frame (95 E) 20 Enclosures 480 Drives 40 U 2 nd expansion frame (95 E) © 2011 IBM Corporation

IBM Storage Systems DS 8800 I/O Enclosure to CEC connection via PCIe DS 8800 PCIe cable I/O attach H DH D A AA A I/O Bay H DH D A AA A PCIe cables I/O Bay CEC#0 CEC#1 P 6+ I/O Bay H DH D A AA A PCIe H DH D A AA A P 6+ I/O Bay RIO H DH D A AA A I/O Bay PCIe cables H DH D A AA A PCIe I/O Bay § Server to server communication path uses RIO, isolated from I/O traffic § DS 8800 I/O Enclosures are the same as the DS 8700 I/O Enclosures RIO H DH D A AA A PCIe P 6+ § I/O bays are directly connected via point-to-point PCI-e cables P 6+ 5 GHz P 6+ 570 CECs Cache 32 GB to 384 GB I/O Bay H DH D A AA A I/O Bay HA – 8 Gbps FC / FICON DA – 8 Gbps FC-AL attached SFF SAS disks © 2011 IBM Corporation

IBM Storage Systems DS 8800 Storage Enclosure Interconnect 4 path from a disk drive

IBM Storage Systems I/O Enclosure and Components HA Slot: 1 DA 3 HA 4 B L A N K I/O Enclosure DA 6 B L A N K 4 or 8 Port Host Adapter 4 Port Device Adapter • Maximum host adapter count for a DS 8800 system is 16 HAs (8 I/O bays) • Maximum port count for a DS 8800 remains 128 ports (same as earlier models) © 2011 IBM Corporation

IBM Storage Systems DS 8800 Gigapack Storage Enclosure – Overview § Disk Technology – 2. 5” Small Form Factor (SFF) SAS 2. 0 Disks – 2 U of vertical rack space – Supports 24 disks per enclosure (Gigapack) – DDMs only in front § Rear Components – Two Integrated power and cooling units (PSU) – Two Integrated FCIC cards § Filler plates required to maintain airflow § Disk Capacity – 146 GB 15 k rpm – 450 GB 10 k rpm – 600 GB 10 k rpm – 300 GB Solid-State Disk § Full Disk Encryption (FDE) Disks cannot be intermixed with Non-FDE disks § No DDM intermix in Storage Enclosure pair § All disk drives installed within a disk enclosure pair must be of the same type (capacity and speed). © 2011 IBM Corporation

IBM Storage Systems DS 8800 DDM Install Groups and Array Sites Array Site Array Site Group 3 Array Site Group 2 Array Site Group 1 Install Group is 16 DDMs. Install sequence is fixed. ‘Array Site’ is 8 DDMs across enclosures (arrays across loops). Array Site Numbers will be the same within Storage Enclosure Pair Array Site to DDM mapping is NOT fixed © 2011 IBM Corporation

IBM Storage Systems DS 8000 Management Console Network § HMC – All base DS 8800 models ship with one Storage Hardware Management Console - Lenovo Think. Pad, and two Ethernet switches § SSPC – System Storage Productivity Center (SSPC) is a console (hardware and software) that enables the management of various storage systems –SSPC consists of • IBM Tivoli Storage Productivity Center Basic Edition • SVC GUI back-end © 2011 IBM Corporation

IBM Storage Systems DS 8000 Virtualization Disk enclosure RAID Array site Rank © 2011

IBM Storage Systems DS 8000 Virtualization Extent Pools Fixed Block (FB) LUN Connection and wwpn Volume Groups and Hostattachments wwpn-1 SAN Port wwpn Power wwpn-2 Volume group Port wwpn DS 8000 © 2011 IBM Corporation

IBM Storage Systems DS 8800 GUI – Extentpools window © 2011 IBM Corporation

IBM Storage Systems DS 8800 GUI – Hardware Explorer Sample © 2011 IBM Corporation

IBM Storage Systems DS Command Line Interface (DS CLI) § DS CLI runs on a server connected to DS 8000 HMC console § DS CLI communicates with the DS 8000 system through the HMC console § Supported operating systems include: – IBM I, i 5/OS – Micfrosoft Windows – AIX – Red Hat Linux – etc. § The DS CLI is supplied and installed via a CD that ships with the DS 8000 © 2011 IBM Corporation

IBM Storage Systems DS CLI Examples § mkextpool -rankgrp 0 -stgtype fb extpool_i_0 § chrank -extpool p 0 r 0 § mkfbvol -extpool p 0 -os 400 A 04 -name i_prot_#h 1000 § mkvolgrp -type os 400 mask -volume 1000 -100 F volgrp 10 § mkhostconnect -wwname 10000000 C 942 BA 4 D -hosttype i. Series -volgrp V 14 ad 1_port 1 § DS CLI scripts – DSCLI SCRIPT('/myscript') USER(admin) OUTPUT('/outfile') © 2011 IBM Corporation

IBM Storage Systems DS 8000 Copy Services Flash. Copy § Flash. Copy – point in time copy Metro Mirror § Metro Mirror –synchrone replication § Global Mirror – asynchrone replication Global Mirror © 2011 IBM Corporation

IBM Storage Systems DS 8000 Performance monitoring §IBM Tivoli Storage Productivity Center ( TPC) § Performance Data Collection Utility (PDCU) - IBM Internal tool Example of TPC output © 2011 IBM Corporation

IBM Storage Systems IBM Easy Tier SSD Optimization § Monitors performance of each ‘extent’ (1 Gi. B, sub-volume level) to determine the data ‘temperature’ Tier 0: SSD RAID Array(s) § Creates extent migration plan for optimal data placement every 24 hrs based on performance statistics Tier 1: FC § Migrates extents within an extent pool according to plan over 24 hour period FC/SAS RAID Array(s) § A limited number of extents are chosen for migration every 5 minutes Tier 2: SATA RAID Array(s) © 2011 IBM Corporation

IBM Storage Systems DS 8000 Connectivity for IBM i Native connection IBM i LPAR

IBM Storage Systems IBM Entry-Level And Midrange Storage Positioning DS 5100, DS 5300 • FC, i. SCSI connectivity • (480) SSD, FC, FDE, SATA drives • EXP 5000 (16 drives) or new EXP 5060 (60 drives) expansion units DS 5020, DS 3950* • FC, i. SCSI connectivity • (112) FC, FDE (DS 5020 only), SATA drives • EXP 5020 (16 drives) expansion unit DS 3500 • FC, SAS, i. SCSI connectivity • (96) SAS, FDE-SAS, NL-SAS drives • EXP 3512 (12 3. 5 -in drive), EXP 3524 (24 3. 5 in drive) expansion units DS 3200, DS 3300, DS 3400 • FC, SAS, i. SCSI connectivity • (48) SAS, SATA drives • EXP 3000 (12 drive) expansion unit SMB / Entry-level § § SAS, i. SCSI connectivity DAS/shared DAS/IP SAN Simple management Snapshot replication 23 Workgroup § § i. SCSI, FC connectivity Shared DAS, small SAN Simple management Snapshot replication Department § § § FC, i. SCSI connectivity Homogeneous SANs Performance value Configuration flexibility Local/remote replication Data Center § § § FC connectivity Heterogeneous SANs Highest performance Configuration flexibility Local/remote replication HPC § § § FC connectivity System clusters GPFS Maximum bandwidth Capacity density © 2011 IBM Corporation

IBM Storage Systems DS 5000 Models DS 5300 (1818 -53 A) DS 5100 (1818 -51 A) • Enhanced performance • Base performance with optional enhanced • 8 or 16 FC interfaces – 4 Gbps , 8 Gbps or 1 Gbps i. SCSI • 8 , 16, 32, 64 GB of data cache • Sixteen 4 Gbps FC drive interfaces • Up to 448 drives in EXP 5000 expansion units • • FC: 146. 8 GB, 300 GB, 450 GB, 600 GB (15 K 4 Gbps FC DDM) FDE FC: 146. 8 GB, 300 GB, 450 GB, 600 GB (15 K 4 Gbps FC DDM) SATA: 750 GB, 1, 000 GB , 2, 000 GB (7. 2 K SATA DDM) SSD: 73 GB, 300 GB 480 SATA drives using eight EXP 5060 expansion units • Partitions: 8, 16, 32, 64, 128, 256 or 512 • Flash. Copy (up to 16 per base), Volume. Copy, ERM (up to 128) © 2011 IBM Corporation

IBM Storage Systems DS 5000 Enclosures § Controller enclosure – Dual-active controllers – Host/SAN connections – Expansion drive loops – Ethernet connections – Hot-swappable CRUs – Switched architecture § EXP 5000 expansion unit – 4 Gbps ESMs – 16 FC/SATA drives – Switched architecture – Hot-swappable CRUs – Redundant pathing 25 © 2011 IBM Corporation

IBM Storage Systems DS 5000 Controller Module (Front View) § Each controller support module houses a power supply, two fans and a battery charger § The interconnect module houses the cache batteries and functions as the midplane Controller Support Module A 26 Interconnect Module Controller Support Module B © 2011 IBM Corporation

IBM Storage Systems DS 5000 – Host-side Connectivity § Eight or Sixteen 8 or 4 Gbps FC ports for host or SAN connections – Auto-negotiate to link speeds • 4 Gbps host card – 1, 2, 4 • 8 Gbps host card – 2, 4, 8 – I/O paths to each controller should be established for full redundancy and failover protection § Four 1 Gbps i. SCSI for LAN connections (no direct connexion) DS 5300 Shown 27 © 2011 IBM Corporation

IBM Storage Systems Connectivity for IBM i Native connection IBM i LPAR 1 Virtual

IBM Storage Systems DS 5000 Drive Connections § When attaching enclosures, drive loops are configured as redundant pairs utilizing one port from each controller. This helps ensure data access in the event of a path/loop or controller failure. 1 5 29 2 6 3 7 4 8 © 2011 IBM Corporation

IBM Storage Systems EXP 5000 Expansion Unit § 16 drives in 3 U enclosure § 4 Gbps FC interfaces / ESMs – High-speed, low-latency interconnect from controllers to drives § Supports intermixing FC, FDE , SATA and SSD drives – More efficient use of enclosures § Unique speed-matching technology – 3 Gbps SATA II drives effectively run at 4 Gbps speeds 30 © 2011 IBM Corporation

IBM Storage Systems EXP 5000 Solid State Drives § 73 GB, 300 GB STEC Zeus-IOPS FC SSD § SSD benefits – Increased small-block I/O performance – up to 80 X – Lower power usage – up to 80% decrease – Dramatic reduction in system space for equivalent I/O § Support for intermixing with other drive types within enclosure – Optimal enclosure utilization reduces costs – Optimal drive loop utilization to maximize performance § Best practices are to spread across drive enclosures / loops – Eight loop pairs enable efficient SSD utilization without over-saturating backend © 2011 IBM Corporation

IBM Storage Systems DS Storage Manager Software § Feature-rich management software enables high performance,

IBM Storage Systems DS Storage Manager Software § Intuitive and powerful – Robust functionality with easy-to-understand GUI and wizards – Unparalleled configuration flexibility enables superior utilization – Tune any attribute to meet any server / application need § Data is always available / protected – Online configuration, reconfiguration, expansion, maintenance – Automated I/O path failover, drive rebuild, cache destage – Integrated disk encryption, RAID 6, proactive drive monitoring § Fully-integrated advanced functionality (premium features) – Partitioning, Flash. Copy, Volume Copy, Enhanced Remote Mirroring © 2011 IBM Corporation

IBM Storage Systems Creating DS 5000 LUNs for IBM i and assigning them to

IBM Storage Systems Storage Partitioning § Creates multiple virtual systems from a single disk system – Max 512 partitions § Heterogeneous host support enables consolidation in multi-platform environments Host A Storage Partition A Host B Storage Partition B SVC Group C Storage Partition C LD 2 § Storage-based implementation ensures data integrity Unmapped Volumes § Logical partitioning provides flexibility © 2011 IBM Corporation

IBM Storage Systems DS 5000 Copy Services § Flash. Copy §Volume. Copy §Enhanced Remote

IBM Storage Systems DS 5000 Performance Monitoring § DS Storage manager Performance Monitor ©

IBM Storage Systems IBM XIV Storage System Unique Architecture § Virtualized grid storage: – Data distribution across all drives – No RAID groups to manage § Automatic load balancing – Consistent performance – No manual intervention § Thin Provisioning § High Performance, flexible Snapshots § Remote Replication/Mirroring § GUI based management § Built in Data migration 38 IBM XIV Storage © 2011 IBM Corporation

IBM Storage Systems Architecture Review: XIV Storage Distribution Oracle VMware § Data is spread across all drives § Even Disk utilization § NO manual intervention § No Tuning § No Hot-Spots ERP © 2011 IBM Corporation

IBM Storage Systems XIV Generation 2 and Generation 3 Gen 3 – Evolution of the Revolution Gen 2 Profile §High performance §Lower cost/TB §Lower entry point § 27 TB usable Gen 3 Profile §Ultra-High Performance § Up to 4 X increase § SSD cache upgradeable §Higher entry point capacity § 55 TB usable § 20% less power consumption § 20% less heat output § 33% noise reduction © 2011 IBM Corporation

IBM Storage Systems IBM XIV Gen 3 Architecture: Nine Data Modules Module 15 (Data) § Contains cache, disk and any-to-any Module connectivity – 24 GB System Cache / Module – Dual write mechanism provides cache redundancy • Writes completed to two different data modules cache – 12 x 2 TB (soon 3 TB) SAS Drives – Infiniband ports for any to any Interface Module and Data Module connectivity Module 14 (Data) Module 13 (Data) Module 12 (Data) Module 11 (Data) Module 10 (Data) Module 9 (Data + Interface – FC / i. SCSI) Module 8 (Data + Interface – FC / i. SCSI) Module 7 (Data + Interface – FC / i. SCSI) 2 x Infiniband Switches, Maintenance Module 6 (Data + Interface – FC /i. SCSI) Module 5 (Data + Interface – FC /i. SCSI) Module 4 (Data + Interface – FC /i. SCSI) § Provides redundant power and cooling – Two power supplies – Ten fans per module Module 3 (Data) Module 2 (Data) Module 1 (Data) UPS 3 UPS 2 § Manage data migration, and redistribution operations 41 UPS 1 © 2011 IBM Corporation

IBM Storage Systems IBM XIV Gen 3 Architecture: Six Data + Interface Modules § Provides FC / i. SCSI host, any-toany Module connectivity, cache and disk § 2 x Dual-port 8 Gb Fibre Channel adapters / module • Modules 4 – 9 provide FC Host Connectivity Module 15 (Data) Module 14 (Data) Module 13 (Data) Module 12 (Data) Module 11 (Data) Module 10 (Data) Module 9 (Data + Interface – FC / i. SCSI) Module 8 (Data + Interface – FC / i. SCSI) Module 7 (Data + Interface – FC / i. SCSI) 2 x Infiniband Switches, Maintenance Module, Module 6 (Data + Interface – FC /i. SCSI) Module 5 (Data + Interface – FC /i. SCSI) Module 4 (Data + Interface – FC /i. SCSI) Module 3 (Data) Module 2 (Data) Module 1 (Data) UPS 3 UPS 2 UPS 1 42 © 2011 IBM Corporation

IBM Storage Systems Host Zoning – Best Case 9 FC 8 FC 7 FC Dat 6 a. FC , FC, Mgt 5 FC 4 FC Data , FC, Mgt § Server connects to all 6 XIV interface modules – Each server HBA connects to 6 XIV interface modules – 12 paths per LUN § Redundant SANs © 2011 IBM Corporation

IBM Storage Systems IBM XIV Storage System Software Functions § Thin Provisioning § Snapshot

IBM Storage Systems XIV– GUI © 2011 IBM Corporation

IBM Storage Systems Creating and mapping XIV volumes for IBM i Screenshots © 2011

IBM Storage Systems IBM System Storage SAN Volume Controller (SVC) Simplified interoperability planning (Server-SVC; SVC Multipath Driver SVC-Storage) Virtual Disk SVC Multipath Driver Disk infrastructure changes and data migration without application downtime Virtual Disk Centralized management SAN Common set of advanced functions SAN Volume Controller Advanced Copy Services Disk Storage Pool IBM Efficient use of resources ‘gold’ HDS ‘silver’ HP ‘bronze’ EMC Single pool of (tiered) disk storage © 2011 IBM Corporation

IBM Storage Systems SAN Volume Controller Architecture § Highly scalable – capacity & performance – 2, 4, 6 or 8 node cluster – up to 192 GB cache per cluster – Up to 32 PB max virtual storage § Flexible host connection – FC and i. SCSI SVC Cluster § High availability – Shared cluster design – Internal disk mirroring & Split Cluster option § Disaster recovery – Synchronous and asynchronous replication with consistency groups © 2011 IBM Corporation

IBM Storage Systems Storwize V 7000 - Logical Building Blocks § The Storwize V 7000 uses basic storage units called managed disks and collects them into one or more storage pools § These storage pools then provide the physical capacity to create volumes for use by hosts Volumes Storage Pool Managed Disks (MDisks) 49 © 2011 IBM Corporation

IBM Storage Systems Storwize - Managed Disks § The basic unit of storage in the Storwize V 7000 is the managed disk or MDisk for short § A managed disk must be protected by RAID to prevent loss of the entire storage pool § In Storwize V 7000 we can have two different types: – Internal Array MDisk • The internal RAID implementation inside the system takes drives and builds a RAID array with protection against drive failures – External SAN attached MDisk • An external storage system provides the RAID function and presents a Logical Unit (LU) to the Storwize V 7000 50 © 2011 IBM Corporation

IBM Storage Systems What is the Storwize V 7000 § Physically the Storwize V 7000 system is comprised of… § One Control Enclosure containing. . . – Two node canisters – Two PSUs (Power Supply Units) – 24 x 2. 5” disk drives or 12 x 3. 5” disk drives § Optionally up to nine Expansion Enclosures per one controller enclosure, containing. . . – Two expansion canisters – Two PSUs (Power Supply Units) – 24 x 2. 5” disk drives or 12 x 3. 5” disk drives § These expansion enclosures may be freely intermixed in a single storage system § Disk drives: – 15 K RPM SAS – 10 K RPM SAS – SSD – Nearline § Clusters of up to 4 Control Enclosures / 8 nodes 51 © 2011 IBM Corporation

IBM Storage Systems Storwize V 7000 Advanced Functions § Thin Provisioning – Included – Allows for storage optimization by consuming real capacity only when data is written § Flash. Copy – Included – Allows use of Flash. Copy function with internal Storwize V 7000 volumes as well as external storage under Storwize V 7000 management – Flash. Copy Manager optionally available to help manage § Easy Tier – Included – Allows for management of hotspots automatically by migrating extents from spinning drives to solid state drives as needed for higher performance – TPC for Disk Midrange Edition optionally available to help manage § Metro and/or Global Mirror – Optional – Allows you to replicate data synchronously or asynchronously between Storwize V 7000 systems – TPC for Replication optionally available to help manage § External Virtualization – Optional – Allows you to bring external fibre channel disk systems under Storwize V 7000 control providing access to all the functions of the virtualization software © 2011 IBM Corporation

IBM Storage Systems SAN - Storage Area Network § Ownership of storage resources is 'de-coupled' from servers § Same data protocol and server view of storage Fibre Channel A dedicated Network Infrastructure for Data Traffic © 2011 IBM Corporation

IBM Storage Systems What is Fibre Channel? § SCSI-3 based serial interface technology enabling SANs –High bandwidth - 100 -400 MB/s per link, 3200 MB/s ISL Trunking –Up to 10 km link distance supported (more with repeaters/extenders) § Multiple physical topologies –Point-to Point, Arbitrated Loop, Switched Fabric Hub Switch FC loop © 2011 IBM Corporation

IBM Storage Systems Fibre Optic Cabling Multimode (MM) Fiber, short-wave Outer coating 250 micron dia. "Multiple paths" for light to travel DATA Cladding 125 micron dia. Core 50 or 62. 5 micron dia LED = Light Emitting Diode SX Laser = Short Wavelength Laser Distances: 62. 5 µ : up to 175 m@1 Gbps, up to 150 m@2 Gbps, up to 75 m@4 Gbps 50 µ : up to 500 m@1 Gbps, up to 300 m@2 Gbps, up to 150 m@4 Gbps Outer coating 250 micron dia. Single Mode (SM) Fiber, long-wave "Single path" for light to travel LX Laser = Long Wavelength Laser Cladding 125 micron dia. DATA Distances: 9 µ : up to 10000 m@1 Gbps, up to 10000 m@2 Gbps, up to 5000 m@4 Gbps Core 9 micron diameter © 2011 IBM Corporation

IBM Storage Systems IBM i SAN support § Supports Switched Fabric, Arbitrated Loop and Point to Point § Shortwave, longwave § Multiple targets and up to 16 devices per on FC adapter in Switched Fabric or Quickloop, multiple targets in a zone § Maximum 3 ISLs, only 1 can be 10 km long IBM i • SA N © 2011 IBM Corporation

IBM Storage Systems IBM i FC adapters (IOAs) § IOP-based: IOP #2844, adapter (IOA) #2787, #5760, #2847 § IOP-less: – #5749: 2 port, 4 Gb, PCI-X – #5774: 2 port, 4 Gb, PCI-e – #5735: 2 port, 8 Gb, PCI-e In IOP-less Max 64 LUNs per port Max 64 LUNs per two ports (or set of ports) in Multipath © 2011 IBM Corporation

IBM Storage Systems Restricting Access with Zoning § Zoning is a switch feature to increase security and restrict access - zones can overlap and are based on WWN or port § Proper isolation of devices that do not support LUN masking © 2011 IBM Corporation

IBM Storage Systems IBM i and switch zoning § Disk and tape in separate zones § IBM i and other servers in separate zones § One or multiple IBM i ports to one port in Storage system –A zone should contain only one port in Storage system because IBM i establishes only one path from IBM i port to Storage i. Series Other Server i. Serie s 57 04 27 87 Switch Switch DS Tap e DS DS © 2011 IBM Corporation

IBM Storage Systems IBM i Multipathing § Built into IBM i LIC and opearting system § Up to 8 path to the same logical device in Storage system § Load balancing with Round Robin – Except DS 5000 © 2011 IBM Corporation

IBM Storage Systems Connecting with VIOS vscsi POWER Storage system VIOS 1 Modules LPAR

IBM Storage Systems Connecting with VIOS_NPIV § Example for DS 8000 © 2011 IBM

IBM Storage Systems Sizes of LUNs for IBM i § Natively connected DS 8000, or NPIV connected DS 8000 –Fixed sizes § Other Storage systems connected natively, with VIOS vscsi, or with VIOS_NPIV –Any size © 2011 IBM Corporation

IBM Storage Systems Useful links 1. System i Storage Solutions http: //www. ibm. com/systems/i/hardware/storage/index. html 2. Virtualization with IBM i, Power. VM™ and Power Systems™ http: //www. ibm. com/systems/i/os/ 3. IBM Power Systems Hardware Information Center http: //publib. boulder. ibm. com/infocenter/powersys/v 3 r 1 m 5/index. jsp? topic=/iphdx /550_m 50_landing. htm 4. IBM Power Blade servers http: //www. ibm. com/systems/power/hardware/blades/index. html 5. IBM i and System i Information Center http: //publib. boulder. ibm. com/iseries/ 6. IBM Support Portal http: //www. ibm. com/support/entry/portal/ 7. System Storage Interoperation Center (SSIC) http: //www. ibm. com/systems/support/storage/config/ssic © 2011 IBM Corporation