Storage Virtualization: Simplify, Optimize, Centralize Shiva Anand Neiker, XIV Sales Leader
Smarter planet: Thinking and acting in new ways to make our systems more efficient, productive and responsive. NEW INTELLIGENCE SMART WORK GREEN AND BEYOND DYNAMIC INFRASTRUCTURE
Managing Information in Silos has become Obsolete 1950s Server-Centric Desktops LAN Workstations Workstations SAN Information Handheld devices Desktops LAN Terminals Server Server Server Server System Subsystems Storage SAN Storage Storage 1990s Network-Centric 21 st Century Information-Centric Globally Integrated Enterprise
Customer Concerns Driving Virtualization Growth in data center costs Inability of IT organization to respond quickly enough to business demands Poor availability or service levels Lack of skilled staff for storage administration functions Poor asset utilization
What is Virtualization? Logical representation of resources not constrained by physical limitations Create many virtual resources within single physical device Reach beyond the box see and manage many virtual resources as one Dynamically change and adjust across the infrastructure IBM Virtualization A comprehensive platform to help virtualize the infrastructure
Comprehensive Virtualization Offerings Server virtualization IBM System p, System i, System z LPARs, VMware ESX Virtually consolidate workloads on servers File virtualization IBM DFSMS, IBM General Parallel File System, IBM SoFS Virtually consolidate files in one namespace across servers File system virtualization IBM System Storage N series Virtual File Manager Virtually consolidate file systems into one namespace Disk and tape storage virtualization SAN Volume Controller, TS7500, TS7650G, TS7700 Virtually consolidate storage into pools Storage Infrastructure Management IBM TotalStorage Productivity Center Consolidated management of virtual and physical storage resources
Storage Virtualization is... Logical Representation Virtualization Physical Resources Technology that makes one set of resources look and feel like another set of resources, preferably with more desirable characteristics A logical representation of resources not constrained by physical limitations Hides some of the complexity Adds or integrates new function with existing services Can be nested or applied to multiple layers of a system Source: Evaluator Group
Value of Storage Virtualization Enterprise Strategy Group reports that early virtualization adopters on average every year save: 24% on hardware costs 16% on software costs 19% on SAN administration costs With a $1 million budget spending $500,000 on hardware, $200,000 on software, and $300,000 on administration Annual savings would be $209,000 Source: http://searchstorage.techtarget.com/tip/1,289483,sid5_gci1122304,00.html
IBM Storage Virtualization and VMware VMware and IBM storage virtualization offerings provide complementary benefits Including improved asset utilization, simplified infrastructure, greater flexibility and responsiveness, easier disaster recovery IBM storage virtualization offerings designed to operate with VMware, other virtualization environments, and non-virtualized servers Provide integration and single point of control for storage in heterogeneous server environments IBM SAN Volume Controller was first storage virtualization device listed in VMware s compatibility guide for ESX Server 3.5 and 3i
SVC Facts IBM has 40 years experience in virtualization technologies IBM has shipped over 14,000 SVC engines running in more than 4,600 SVC systems There are more than 130 customer references and 29 customer case studies for SAN Volume Controller SAN Volume Controller is a proven offering that has been delivering benefits to customers for four years SAN Volume Controller demonstrates scalability with the fastest Storage Performance Council benchmark results SAN Volume Controller can virtualize IBM and non-ibm storage (over 120 systems from IBM, EMC, HP, HDS, Sun, Dell, NetApp, Fujitsu, NEC, Bull)
SAN Volume Controller Delivers Value Reduces the cost and complexity of managing storage Improves business continuity Improves storage utilization Improves personnel productivity Creates tiers of storage Enables multivendor strategies Supports data movement without interrupting applications Allocate more storage to applications automatically Combines storage capacity into a single resource from multiple vendors Manage storage as a business resource, not as separate boxes Manage a single storage resource from a central point
SVC Delivers Availability, Performance, and Scalability It s resilient and highly available We designed and built SVC with the resiliency of a storage controller SVC supports non-disruptive firmware updates and hardware maintenance on the disk arrays to further increase its availability SVC is a proven offering, having been delivering benefits to customers for four years It has the fastest benchmark of any controller SVC has the fastest SPC-1 benchmark EVER submitted (272K IOPS) SVC has the fastest SPC-2 benchmark EVER submitted (7.080 GBPS) Many references quote significant performance improvements (up to 10X faster) It scales to manage large environments SVC scales from very small configurations (1TB) to large enterprises (> 500TBs) and growing! New SVC engines deliver dramatically better throughput, supporting larger and more I/O intensive environments
Flexible Storage Infrastructure with SAN Volume Controller Make changes to the storage without disrupting host applications Virtual Disk Virtual Disk Virtual Disk Virtual Disk SAN Apply common copy services across the storage pool DS8000 SAN Volume Controller Advanced Copy Services Storage Pool HDS EMC DS4000 HP Manage the storage pool from a central point Combine the capacity from multiple arrays into a single pool of storage
SVC Delivers Clear Financial Benefits Forrester Consulting Total Economic Impact study of SVC Summary financial results ROI Original estimate 83% Riskadjusted 53% Surveyed four SVC customers to understand costs and benefits Created composite model based on interview findings Risk-adjusted payback period: 1.4 years Payback period (years) Total costs (PV) Total benefits (PV) Total (NPV) Internal rate of return (IRR) 1.2 ($581,225) $1,061,106 $479,881 75% 1.4 ($616,256) $943,750 $327,494 55% Source: The Total Economic Impact Of IBM System Storage SAN Volume Controller
Key Areas of Cost Saving Observed by Forrester in SVC Customers Reduction in storage management and administration cost Allowing a core group of administrators to control multiple assets across a distributed storage environment (50% efficiency improvement) Improved storage utilization Improve capacity utilization of existing storage assets Control the growth of future spending (improved utilization by 30%) Reduced cost of storage Capitalize on being able to purchase the lowest cost storage resources (controlled growth on average by 20%) Improved customer and end user availability to datadriven applications Minimize downtime associated with migrating data between storage assets ($240,000 in annual savings) Source: The Total Economic Impact Of IBM System Storage SAN Volume Controller
SAN Volume Controller Entry Edition New SVC offering designed to better meet the needs of mid-sized businesses Same enterprise-class functions and benefits as regular SVC offering More affordable hardware and software Simplified configuration Limited to 60 disk drives Regardless of size Customers may convert to regular SVC offering for dramatic growth potential
SVC 2145-8G4 Storage Engine SVC engine based on IBM System x3550 server Two dual-core Intel Xeon 5160 processors at 2.33GHz 8GB of cache Four 4Gbps FC ports Dramatically improved throughput compared with 8F4 engines Helps support larger, more I/O intensive storage configurations New engines may be intermixed in pairs with older engines in SVC clusters Helps protect investments and offers enhanced growth capability Cluster nondisruptive upgrade capability may be used to replace older engines with 8G4 engines
SVC 2145-8A4 Storage Engine New more affordable SVC engine based on IBM System x3250 server Intel Xeon E3110 3.0 GHz 6MB L2 Cache Dual-Core processor 8GB of cache (same as model 8G4) Four 4Gbps FC ports (same as model 8G4) Throughput approximately twice that of Model 4F2 and about 60% the throughput of Model 8G4 At about 60% the price of the Model 8G4 Primarily designed for use with new SVC Entry Edition software 2145-8A4 engine supports both SVC EE and regular SVC software Enables SVC EE customers to convert to regular SVC software to support growth but without replacing hardware Provides lower cost upgrade for current 2145-4F2 customers
Breakthrough Performance with SVC 4.3 SPC-1 benchmark: Simulates I/O characteristics of OLTP workloads SVC delivers up to 274,997 SPC-1 IOPS SPC-2 benchmark: Simulates heavy sequential workloads SVC delivers up to 7080 SPC-2 MB/s SVC is the fastest storage virtualization system in both SPC benchmarks New SPC-1 benchmark obtained with Space-Efficient Virtual Disks Demonstrates SVC ability to deliver high performance and advanced storage provisioning capability Measurements conducted using 8-node SVC configurations, 2145-8G4 nodes, and IBM DS4700 disk. For more information, see www.storageperformance.org/results
Infrastructure Simplification Objective: lower TCO and improved ROI Consolidate dispersed storage resources Provide a unified, strategic view of your data Break through traditional storage complexity with advanced management capabilities Innovate to unify and simplify heterogeneous storage environments It s choice
Infrastructure Simplification with SAN Volume Controller Traditional SAN Capacity is isolated in SAN islands Multiple management points Poor capacity utilization Capacity is purchased for, and owned by individual processors SAN Volume Controller Combines capacity into a single pool Uses storage assets more efficiently Single management point Capacity purchases can be deferred until the physical capacity of the SAN reaches a trigger point. 25% capacity SAN 50% capacity SAN 55% capacity 95% capacity SAN Volume Controller
Space-Efficient Virtual Disks (SEV) Space-Efficient Virtual Disks function is the SVC implementation of thin provisioning Traditional ( fully allocated ) virtual disks use physical disk capacity for the entire capacity of a virtual disk even if it is not used Just like traditional disk systems With SEV, SVC allocates and uses physical disk capacity when data is written Can significantly reduce amount of physical disk capacity needed Available at no additional charge with SVC base virtualization license
SEV Helps Save Disk Space SEV will help save much of the allocated but unused space on virtual disks today Can be 50% or more of disk space, especially in Windows environments SVC helps improve disk utilization by pooling capacity from disk systems and pooling spare capacity SEV takes this to the next level by pooling spare capacity from virtual disks Instead of reserving spare capacity for each virtual disk, have a pool of shared spare capacity that all virtual disks use as their data grows No need to create special pools of storage just for SEV Storage administrators can focus on more strategic issues Monitor total SVC capacity utilization, track trends, plan acquisitions No longer need to monitor and provision for individual disks
Using Space-Efficient Virtual Disks Customers try to optimize storage use and administrator effort today Allocate storage in advance for planned growth Requires buying storage before needed Increase size of LUNs as stored data grows Requires monitoring of space used on different LUNs Requires action to increase LUN size May be disruptive to applications if database reorg required to use additional capacity (especially if more LUNs needed) SEV dramatically simplifies storage optimization Create virtual disk to match anticipated growth SVC automatically provisions disk capacity on demand Use SEV to manage requests for storage IT departments often request more storage for projects than needed Usually difficult to reclaim disk space SEV enables request to be satisfied virtually but disk space is saved
Non-disruptive Data Migration with SAN Volume Controller Traditional SAN 1. Stop applications 2. Move data 3. Re-establish host connections 4. Restart applications SAN Volume Controller 1. Move data Host systems and applications are not affected. SAN Virtual SAN Disk SAN Volume Controller
Business Continuity Objective: protect your business Help reduce business risk, by increasing resilience Help secure and protect business information Stay competitive and maintain market readiness It s confidence
Business Continuity with SAN Volume Controller Traditional SAN Replication APIs differ by vendor Replication destination must be the same as the source Different multipath drivers for each array Lower-cost disks offer primitive, or no replication services SAN Volume Controller Common replication API, SANwide, that does not change as storage hardware changes Common multipath driver for all arrays Replication targets can be on lower-cost disks, reducing the overall cost of exploiting replication services FlashCopy PPRC SAN TimeFinder SRDF SAN SAN Volume Controller SVC IBM DSx IBM DSx EMC Sym EMC Sym IBM DS8000 IBM DS4000 EMC Sym HP MA IBM S-ATA
SVC FlashCopy Function Volume-level local replication function Designed to create copies for backup, parallel processing, test, Up to 256 targets Copy available almost immediately for use FlashCopy relationships Background copy operation or copy on write Up to 256 copies of a single source volume Source vdisk Source and target volumes may be on any SVC supported disk systems
Incremental FlashCopy FlashCopy capability where only changes from either source or target data since last FlashCopy operation are re-copied during a target refresh Up to 256 incremental and non-incremental targets can exist for same source Consistency groups can include both incremental and nonincremental FlashCopy targets Helps increase efficiency of FlashCopy operations and can reduce time to refresh copies Designed to allow completion of point-in-time online backups much more quickly, thus the impact of using FlashCopy is reduced May enable more frequent backups so enabling faster recovery More frequent backups could be used as a form of near-cdp Start incremental FlashCopy Data copied as normal Later Some data changed by apps Start incremental FlashCopy Only changed data copied by background copy
Cascaded FlashCopy FlashCopy capability to create copies of copies Mappings can be incremental or non-incremental Allows a vdisk to be both source and target in concurrent FlashCopy mappings See diagram: Map 2 can be defined and triggered while Map 1 relationship exists Maximum number of targets dependent on a single source disk is 256. The example shows 4 targets from source disk 0 Enables backup of target disks to be made without having to disrupt existing FlashCopy relationships with original source Helps reduce time to establish copies of targets, since there is no need to await copy complete of target disk before triggering cascaded copy Designed to increase flexibility in use of FlashCopy Map 1 Map 2 Disk0 Disk1 Source FlashCopy target of Disk0 Map 3 Disk3 FlashCopy target of Disk1 Map 4 Disk2 FlashCopy target of Disk1 Disk4 FlashCopy target of Disk3
Space-Efficient FlashCopy (SEFC) Combination of using SEV and FlashCopy together Helps dramatically reduce disk space when making copies Two variations Space-efficient source and target with background copy Copies only allocated space Space-efficient target with no background copy Space used only for changes between source and target Generally what people mean when they talk of snapshots Space-efficient copies may be updated just like normal FlashCopy copies SEFC may be used with multi-target, cascaded, and incremental FlashCopy Can intermix space-efficient and fully-allocated virtual disks as desired
Improving Application Test with SEFC Production systems often have many test systems that are replicas of production SAP is known for often having large number of copies Using SEFC to create replicas could significantly reduce storage needed In this example, use fully-allocated test master to isolate test systems from production disk Production and test could be on separate disk systems Test master can be used to reset test virtual disks after test runs Implementation uses SEFC, cascaded, and multi-target FC This example uses around 2x production data Compare with 5x for regular FlashCopy Production FA FA Test master copy SE SE SE SE Test
Saving Disk Space for Boot Drives with SEFC Boot drives or disk images usually required for each server or virtual server Contents of boot drives may be very similar Use SEFC to clone master boot drive or disk image Disk space used for differences between servers, which may be very minor Same approach may be used for VMware Virtual Desktop Infrastructure (VDI)
Improving Disk Backup with SEFC Without SEFC, disk-to-disk copies used for backup consume same amount of space as original data Customers may limit number of copies kept because of space usage SEFC dramatically reduces size of disk copies May enable more copies to be kept online, speeding recovery Multi-target FlashCopy now supports up to 256 copies With scripting, could create regular backup copies Similar in concept to continuous data protection
Virtual Disk Mirroring SVC stores two copies of a virtual disk, usually on separate disk systems SVC maintains both copies in sync and writes to both copies If disk supporting one copy fails, SVC provides continuous data access by using other copy Copies are automatically resynchronized after repair Intended to protect critical data against failure of a disk system or disk array A local high availability function, not a disaster recovery function Copies can be split Either copy can continue as production copy Either or both copies may be space-efficient
SVC Metro Mirror Function Metropolitan distance synchronous remote mirroring function Up to 300km between sites for business continuity As with any synchronous remote replication, performance requirements may limit usable distance Host I/O completed only when data stored at both locations Designed to maintain fully synchronized copies at both sites Once initial copy has completed Metro and Global Mirror delivered as single feature Offers great implementation flexibility Operates between SVC clusters at each site Local and remote volumes may be on any SVC supported disk systems
SVC Global Mirror Function Long distance asynchronous remote mirroring function Up to 8000km distance between sites for business continuity Does not wait for secondary I/O before completing host I/O Helps reduce performance impact to applications Designed to maintain consistent secondary copy at all times Once initial copy has completed Built on Metro Mirror code base Metro and Global Mirror delivered as single feature Offers great implementation flexibility Operates between SVC clusters at each site Local and remote volumes may be on any SVC supported disk systems
Information Lifecycle Management Objective: storage aligned with data s relative value Improved ROI by matching resources to their relevance to core business Increase productivity and response to change by providing access to data, regardless of where it resides Reduce administrative cost through a policy-based approach to managing information from creation to disposal Assists compliance and security It s complete
Lifecycle Management with SAN Volume Controller Traditional SAN Moving data between arrays is disruptive Copy Services only between like arrays SAN Volume Controller Ability to move data between arrays without disruption Apply Copy Services from any to any Match the cost of storage to the business value of the data SAN SAN SAN Volume Controller EMC DS8000 DS4000 DS8000 DS 4000 EMC Migration TimeFinder Metro Mirror FlashCopy
IBM z/vse SAN Volume Controller Version 4.3.1 Supported Environments Novell NetWare VMware Microsoft Windows Hyper-V IBM AIX IBM i 6.1 Sun Solaris HP-UX 11i Tru64 OpenVMS SGI IRIX Linux (Intel/Power/zLinux) RHEL SUSE Apple Mac OS IBM N series Gateway NetApp V-Series IBM TS7650G IBM BladeCenter 1024 Hosts New New New New New iscsi to hosts Via Cisco IPS Point-in-time Copy Full volume, Copy on write 256 targets, Incremental, Cascaded Space-Efficient Entry Edition software New New SAN with 4Gbps fabric New SAN Volume Controller New Space-Efficient Virtual Disks Virtual Disk Mirroring Continuous Copy Metro Mirror Global Mirror SAN SAN Volume Controller IBM ESS, FAStT IBM DS DS3400 DS4000 DS5000 DS6000 DS8000 IBM XIV IBM N series Hitachi Lightning Thunder TagmaStore AMS, WMS, USP HP MA, EMA MSA, EVA 4400 XP 24000/20000 EMC CLARiiON Symmetrix Sun NetApp StorageTek FAS NEC istorage Bull StoreWay Fujitsu Eternus Pillar Axiom 300, 500 For the most current, and more detailed, information please visit ibm.com/storage/svc and click on Interoperability.
Key Requirements for Virtualized Disk Storage With over 4,600 systems to date, SAN Volume Controller delivers on key requirements Retain existing investments Implement with minimal disruption to applications Enable phased implementation
Why IBM Virtualization Over 40 years experience with virtualization technologies Over 30 years experience with storage virtualization Industry s first and leading mainframe virtualized tape system Industry leading disk block virtualization system Complete range of virtualization assessment, planning and implementation offerings IBM offers an integrated range of virtualization and management offerings to address all portions of the IT infrastructure
SVC: The Benefits are Real Key Areas of Cost Saving Observed by Forrester in SVC Customers Reduction in storage management and administration cost Allowing a core group of administrators to control multiple assets across a distributed storage environment (50% efficiency improvement) Improved storage utilization Improve capacity utilization of existing storage assets Control the growth of future spending (improved utilization by 30%) Reduced cost of storage Capitalize on being able to purchase the lowest cost storage resources (controlled growth on average by 20%) Improved customer and end user availability to datadriven applications Minimize downtime associated with migrating data between storage assets ($240,000 in annual savings) Source: The Total Economic Impact Of IBM System Storage SAN Volume Controller
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