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"Driving down enterprise storage TCO with the IBM XIV Storage System"


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"Driving down enterprise storage TCO with the IBM XIV Storage System"

  1. 1. IBM Systems and Technology September 2011Thought Leadership White PaperDriving down enterprise storage TCOwith the IBM XIV Storage SystemArchitecture and simplified management diminish ownership costs
  2. 2. 2 Driving down enterprise storage TCO with the IBM XIV Storage SystemIntroduction Given the various cost factors involved, it is evident that a thor-A high-end storage system’s total cost of ownership (TCO) ough TCO assessment should take into account the cost of:includes more outlays than the obvious ones of box price andcapacity. Taking a holistic look at the factors impacting IT G Buying, implementing, running, cooling and expanding thebudgets over a storage system’s lifetime yields an accurate TCO system.assessment and, ultimately, a more informed buying decision. G Managing, integrating and testing the system. G Ensuring the system’s reliability and availability.The chart below shows a full set of storage cost elements and G Incurring downtime caused by routine maintenance ortheir relative impact on a system’s overall cost. unexpected equipment failure. G Being locked in to a system that uses proprietary components.Figure 1: Typical storage cost factors G Licensing software at time of purchase and upon each capacity increase. Hardware management 3% The IBM® XIV® Storage System series is designed to address each of the above cost issues. An independent study by ITG hasBackup/restore found that XIV storage can save an organization 69 percent on 23% TCO over a three year period.1 This paper explains how the Environmentals XIV system’s unique architecture and approach to storage enable 18% it to accomplish this feat. Administration 18% Acquisition 20% Downtime 18%
  3. 3. IBM Systems and Technology 3The XIV Storage System: Designed for XIV Storage System: Reducing acquisitionlow TCO costsDesigned to deliver high performance and reliability at excep- The IBM XIV Storage System is designed to be cost-efficient intionally low TCO, the IBM XIV Storage System series is: aspects related to system acquisition, while delivering consistent, predictable high performance by its:G Priced in a simple manner that is based on cost per terabyte, without additional costs for software features such as differen- G Single-tier architecture, which supports all types of storage tial snapshots, remote mirroring and thin provisioning. in one environment and makes scaling easy.G A fully virtualized, self-managed, self-healing system that G Use of off-the-shelf components, making customized hard- automatically balances loads at all times, optimizing capacity ware unnecessary and allowing the integration of newer, state- use and minimizing human intervention and error. of-the-art hardware as it becomes available and cost-effective.G Easily managed through a simple graphical user interface G Innovative use of highly economical disk drives, offering (GUI) that minimizes storage management overhead. excellent capacity-for-cost value while meeting enterpriseG Built entirely of state-of-the-art, yet standard, cost-effective performance standards. components that can significantly reduce power consumption. G Built-in thin provisioning, which allows the acquisition andG Fully hardware-redundant, lowering risk of failure to negligi- installation of additional capacity to be delayed until needed. ble levels and enabling disks to be added and replaced on the This makes it possible to take full advantage of future hard- fly without a performance hit or downtime. ware and price-point improvements not currently available.G A single-tier platform based on a grid architecture, eliminating G Automatic load-balancing, self-healing capability and other the need to tune and configure the system for each workload architectural features that provide Tier-1 enterprise-level and reducing management costs. performance while using lower priced disk drives and, ulti- mately, optimizing usable capacity compared to traditionalThe XIV system is designed to comprehensively address each TCO factor, whereas other systems typically address G Simple price per terabyte and inclusion of a rich set ofonly a few elements, at most. The chart on the next page illus- software features such as snapshots, remote mirroring andtrates how the XIV system addresses cost factors to dramatically thin provisioning that are available for all system capacities.reduce TCO.
  4. 4. 4 Driving down enterprise storage TCO with the IBM XIV Storage SystemFigure 2: XIV Storage System benefits by TCO category Hardware management Automatic hardware monitoring Quick disk rebuildBackup/restore Snapshots with no performance impact Environmentals Differential snapshots Reduced power and cooling VSS support Minimized space footprint Simple migration Consistency groups Administration Fast deployment and migration Simplified storage management Easy monitoringAcquisition Thin provisioning and space Single-tier architecture reclamation Commodity hardware Self-tuning Lower hardware costs Hot, non-disruptive upgrade Just-in-time purchasing Transparent scaling Efficient thin provisioning with no hidden costs Optimal capacity use All key aspects scalable Robust software features included Downtime at no extra cost Less hardware to fail Integral UPS Less human intervention, averting human errors Rapid self-healing and scrubbing All components redundant Free and flexible volume replication
  5. 5. IBM Systems and Technology 5Single-tier architecture Commodity hardwareMost IT centers today use information life cycle management Traditional enterprise-class storage systems are usually built(ILM) and similar practices to cut costs. These efforts involve from proprietary hardware. This typically makes them costly duemultitiering, adding a substantial degree of complexity and cost to the huge investment in their development and version system management. A multitier storage solution typically More importantly, the use of proprietary components createsincludes a number of different architectures, each requiring a a built-in rigidity that makes such systems unable or slow todifferent kind of expertise. Moving the data between tiers integrate new technologies.requires effort and planning and involves hardware and operat-ing expenses for each tier. As each environment grows at its XIV minimizes costs and provides exceptional flexibility by treat-own pace, equipment must be added to one tier or another. ing hardware as an interchangeable commodity. Built entirelySince this growth is typically unpredictable, acquisitions are of off-the-shelf hardware components, XIV storage is designedoften not cost-efficient. to integrate the latest disks, motherboards, CPUs, memory, interconnects and other components. This empowers organiza-The single-tier XIV architecture eliminates the complexity and tions to capitalize on market advances in capacity and cost whilecost of migrating data from tier to tier and maintaining different meeting their dynamic performance and budget requirements.architectures for different tiers. It also does away with the costof using expensive hardware for higher tier data; in other words, Very high density disk drivesXIV provides Tier-1 performance for data at Tier-2 costs. As Enterprise storage systems are traditionally configured withsuch, XIV storage helps organizations curtail and minimize Fibre Channel (FC) drives generally known for speed and relia-hardware costs while offering the ability to grow at any time, bility and, consequently, high cost. XIV storage, on the otherand only as much as needed. hand, uses only very high density drives that offer three primary advantages over FC drives: they cost less, they are more energy efficient and they offer more memory per physical footprint.
  6. 6. 6 Driving down enterprise storage TCO with the IBM XIV Storage System The XIV system’s combination of high density drives with Optimal capacity use innovative caching, load balancing, massive parallelism and It is commonly recognized that a large amount of a storage advanced algorithms provides Tier-1 performance, reliability system’s total storage capacity is not utilized. Whether and availability. economic times are good or bad, that is a troublesome scenario of capacity waste. The IBM XIV performance white paper provides more informa- tion on the XIV system’s high-end performance resulting from XIV storage is designed to optimize capacity use in many ways. the use of commodity hardware such as very high density drives. These include self-management, ongoing space reclamation and powerful native features such as thin provisioning and Built-in thin provisioning differential snapshots, which save space as they are applied. The Most enterprise systems offer thin provisioning—the ability to XIV system is able to meet the same storage needs as traditional define a system’s logical capacity which is larger than its physical systems with many fewer net terabytes of capacity. This can capacity—so as to defer physical capacity purchases. However, in translate into less spending on physical capacity; it also can many systems this feature has been added to the existing archi- mean fewer outlays resulting from a system that operates with- tecture, making it harder to manage and of limited scope. out hotspots and without system down-time or performance degradation during maintenance or scaling. The XIV Storage System provides thin provisioning as a core feature of its design, managed at the simple click of a button. Figure 3: Comparison of typical capacity utilization Organizations can leverage the system’s easy-to-manage thin provisioning capability to significantly reduce capital and 100% operating expenses. This allows the organization to postpone capacity purchases by acquiring physical capacity for only the 80% total space actually written rather than the total space allocated. 60% 40%“ Drag-and-drop thin provisioning lets us deliver new storage volumes while still on 20% the phone with the user!” 0% Traditional Tier-1 system IBM XIV system —International stock exchange, Europe Lost Full Thick Effective space snapshots provisioning capacity
  7. 7. IBM Systems and Technology 7Self-management: Core to the XIV system’s optimization Hotspot-free: XIV storage is fully virtualized, distributing dataof capacity use is its self-management of data. The system’s automatically and maintaining load balance at all times, withoutautomated volume distribution mechanism optimizes the use hotspots. The lack of hotspots eliminates the need to reallocateof capacity across system disks at peak times and regardless volumes to achieve specific performance requirements.of IT activities, application size or user demand. Its automatedapproach to volume distribution, including automated load Hands-free scaling: Whenever new physical capacity is added,balancing, avoids onerous and error-prone manual allocation XIV storage automatically integrates the new capacity across thetasks. The system also automatically performs space reclamation, disks and modules and swiftly redistributes the load to maintainfurther maximizing capacity use. perfect balance. For more information on IBM XIV volume distribution and load balancing, see the IBM XIV performanceDifferential snapshots (full backup volumes): XIV snapshot white uses a differential implementation, copying only thedata that differs between source and snapshot. This dramatically Instant space reclamation (thin reclamation): Integrating tightlyand efficiently minimizes the space otherwise consumed by with Symantec Storage Foundation and similar tools, XIVcopies and keeps system performance unaffected. storage performs instant space reclamation automatically for NTFS or VxFS file systems and offers simple management forIn addition, XIV snapshot and replication mechanisms take the leveraging this capability to the fullest. The XIV system recog-required storage space from a single, general pool. Traditional nizes “zeroed out” space as not being in use; it releases any spacesystems typically require the allocation of separate storage pools marked by zeros into the general pool, thus reclaiming it. XIVfor snapshots and replication. The downside to the traditional management tools enable administrators to easily zero out spaceapproach is that when the pools are from different tiers, spare no longer in use so that the system can automatically reclaim itspace is taken from all over the system, increasing the overhead and allow its reuse. This ability, inherent to the XIV architec-needed to track where the data resides. ture, allows the system to reclaim more space than traditional storage systems can, thus making its capacity utilization superior. More information on the benefits of thin reclamation is available in the IBM XIV thin reclamation white paper
  8. 8. 8 Driving down enterprise storage TCO with the IBM XIV Storage SystemSimple pricing Not charging software license fees for this rich set of function-Simplicity is a key virtue of XIV storage; this simplicity applies ally differentiates XIV storage from the vast majority of systemsto pricing, as well. Buying an XIV system is a simple matter of on the market. Most traditional Tier-1 storage systems havespecifying the desired capacity. complex pricing models that, by nature, inflate system cost and complicate attempts to assess true TCO. Such enterpriseThe XIV Storage System takes a bundled approach to features, storage pricing schemes commonly involve itemized hardwarewith every system including the following software functionality and infrastructure costs, itemized license fees for softwarebuilt-in, at no extra charge: features—including for their initial purchase, upon capacity increase and annual license renewals—as well as other softwareG Thousands of snapshots fees for version compatibility.G Remote mirroringG Storage management Moreover, the XIV system’s native self-healing and load balanc-G Thin provisioning ing mechanisms spare or minimize the need to purchase periph-G Self-tuning eral software enhancers, such as performance optimization tools.G Host attachment kits (HAKs)G Data migrationG Special host features, such as MS VSS and SCOM supportG Native multipath support of the host operating system “ The 50 percent reduction in utilized capacityG QoS Performance Classes and lack of additional licensing costs through Performance monitoring the mirrored infrastructure meant weGG Consistency groups also had an impressively low total cost of ownership to look forward to.” —Banking institution, Europe
  9. 9. IBM Systems and Technology 9 XIV Storage System: Lowering Floor space environmental costs High density drives offer capacities that are greater than those The IBM XIV Storage System is an extremely “green,” environ- of disks used by competing systems. This allows XIV customers mentally advantageous system, offering upfront and ongoing to consolidate and use significantly fewer floor tiles for a given savings in power, cooling and floor space. These savings are so capacity; on a rack level, XIV systems can provide 161 TB of substantial that they alone can bring the TCO of XIV storage capacity in the same physical space that competing systems offer lower than that of a comparable system. 40 or 80 TB. Power and cooling consumption The Appendix to this white paper provides formulas for The XIV Storage System can offer power and cooling savings calculating the floor space savings provided by XIV storage of more than 65 percent over comparable high-end enterprise in a given scenario. systems.2 There are two primary reasons for substantially lower power consumption: Savings may also accrue by avoiding costs associated with IT facility renovations required to accommodate more physical G Due to its use of high density drives and inherent capacity storage and the related organizational disruption that would optimization, XIV storage requires substantially fewer drives take place. While these indirect savings are often overlooked for a given gross capacity when compared to traditional and/or underestimated, the simple fact is that if physical space systems. is not available, a data center must expand or be relocated. G High density disks consume less power and emit less heat than disks used by traditional storage systems. XIV Storage System: Lowering administration and management costs The Appendix of this white paper contains formulas that can The XIV Storage System can dramatically reduce storage be used to calculate the energy saved by XIV storage in a given management effort and related costs by automating performance scenario. For more information on how XIV reduces power tuning and other traditionally manual management functions. usage, see the IBM XIV power consumption white paper. This automation can simplify daily administrative tasks and offer capacity efficiencies that reduce the overall amount of physical capacity that needs to be managed. With the necessity of exten- sive training and fine tuning eliminated or reduced, the XIV“ We’ve shrunk our floor footprint from system’s simplification of storage management brings further 10 tiles down to two… we’re seeing a great cost reductions. reduction in cooling and power consumption.” —Leading regional medical center, US
  10. 10. 10 Driving down enterprise storage TCO with the IBM XIV Storage System Less management overhead resize volumes, create storage pools and even take snapshots—in The XIV Storage System is designed to manage itself as much most cases, a reduction from hours and days to a few minutes or as possible and be managed with minimal effort. Its easy and less. Training to use the XIV system is also quick. Exceptional intuitive user interface is an outward reflection of a smart, ease of use helps organizations reduce costs by making storage efficient and well-structured architecture. administrators more productive and allowing them to focus on high value tasks. Easy, rapid deployment and migration XIV storage obviates the traditional need to intensively plan Simple XIV GUI the layout of application volumes on physical storage units. Its automated, optimized approach to volume distribution and load balancing can significantly reduce storage migration and deployment time.“ The XIV data migration was the most impressive aspect of the whole implementa- tion phase … the migration ran in the background, with no perceptible effect on the performance.” —Large bank, South Africa The XIV Storage System’s interface allows managing up to 64 systems with the ability to define groups. Simple-to-scale capacity Adding capacity with XIV storage is similarly seamless. The The system’s ease of use, in fact, combines with XIV role-based new capacity is available immediately, without the need to access and authorization to offer a new IT paradigm in which reconfigure and without performance degradation. any staff member, including one without special storage skills, can provision and manage storage. It is conceivable, for example, Ease of use that database administrators might handle provisioning, without The XIV system’s highly intuitive GUI greatly simplifies day- external assistance, controlling only those volumes they are to-day storage administration, enabling most tasks to be exe- authorized to handle based on role. The XIV system’s ability cuted in just a few clicks. The result is a dramatic reduction in to enable lesser skilled personnel to manage ongoing growth the time required to, among other things, provision storage, can translate into substantial savings in overall TCO.
  11. 11. IBM Systems and Technology 11Easy monitoring hotspots. In addition, XIV storage maintains optimalThe XIV Storage System dramatically simplifies the monitoring performance, with no need for performance optimizingand maintenance of system health—including through alerts sent software select personnel via automated email, SMS and SNMP thatclearly identify a problem and its source. The result is a highly Single-tier platformtransparent system with speedy mechanisms for easily and XIV storage spares IT teams the administrative efforts otherwiseefficiently handling maintenance and issues as they arise. required to support additional architectures or migrate data from one tier to another in an attempt to keep up with changingXIV Storage System monitoring needs or trim storage costs. Unified integrated platforms XIV storage provides certified, enterprise-proven, no-charge integrations and high levels of partner support across leading platforms, applications and storage productivity products. The ability to integrate with IBM Tivoli, VMware vCenter, Microsoft SCOM and Symantec CommandCentral, among other management products, empowers users to monitor and manage storage end-to-end with a unified interface. Views of virtualized pools and arraysSystem monitoring provides alerts and information that enable users to iden-tify a problem and its source.Self-tuningThe XIV system automates performance tuning, removing thecomplexities of load balance, location of mirrored data and datadistribution. With XIV storage, consistent high performance is Used in a VMware vCenter environment, XIV storage provides visibility intoachieved without the need for labor-intensive manual tuning to virtualized pools and arraysmonitor, reconfigure or rebalance performance or disperse
  12. 12. 12 Driving down enterprise storage TCO with the IBM XIV Storage SystemXIV Storage System: Reducing downtime engage in the rebuild, keeping the burden on any one disk to thecosts minimum. Furthermore, only the data actually written is rebuilt,Downtime is expensive. The loss or lack of access to mission- making rebuild time proportional to actual written data.critical data can harm an enterprise directly and indirectly. XIVstorage is designed to operate continuously over its installed life- In addition, online support is available through IBM 24×7 globaltime with no interruption to data access. It keeps data availability support and service, which can:continuous and minimizes the extent and cost of downtimethrough redundant hardware, automated and proactive mainte- G Monitor customer system healthnance and efficient hardware repair with minimal administrator G Alert customers regarding past or imminent issuesintervention. G Offer immediate remote assistance to solve issuesLess failure to manage Reduced intervention and human errorThrough ongoing automatic monitoring of hardware and data, The XIV Storage System can further reduce system downtimeXIV storage in most cases can enable detection of imminent by helping prevent human errors that could lead to equipmentfailure in time to prevent data loss or data unavailability. The or system failure. Its self-management of volumes can eliminatesystem performs data scrubbing continuously, comparing data the traditional need for manual configuration planning—a taskcopies and correcting inconsistencies quickly and efficiently. that not only consumes much time, but often increases the riskSystem components are redundant and constantly monitored of data unavailability or data loss due to human errors. Theto minimize downtime from physical failure. Upon detecting automatic self-healing feature, which returns the system to fullsigns of failure, the system creates a third copy of the data on the data redundancy upon hardware failure, precludes the need toat-risk disk immediately, and it automatically alerts operations rush to repair a failed component, avoiding the kind of humanpersonnel. The system is designed for component replacement error that can take place when parts are replaced under pressureon the fly, without downtime or even a perceptible degradation and at odd hours of the day. Furthermore, XIV storage calls forin system performance. maintenance tasks to be performed only when the system is fully redundant, thus helping to prevent data loss caused by humanShould a component fail without warning, the XIV system’s error during maintenance activities, such as removal of a work-rapid self-healing features can restore complete system ing disk rather than the faulty disk.redundancy in minutes, without disruption to vitalenterprise functions. High availability and nondisruptive changes In most enterprise storage systems, planned downtime for dataShould a disk failure occur, the system can complete a disk migration and maintenance is costly—and a major inconven-rebuild in 60 minutes or less (for a 2 TB drive, with the system ience for the IT team and end users. Minimizing downtimeat 100 percent utilization), with minimal impact on system involves extensive planning. Multiple teams are involved toservice. The system is able to do this since all system disks represent the interests of end users, management, vendors and service personnel.
  13. 13. IBM Systems and Technology 13Negotiating downtime for maintenance is another inevitable Online code upgradessource of friction, as maintenance must compete with other, XIV storage allows hot code upgrades and patches within andhigher priority demands. In traditional systems, rolling out a outside a code family. This eliminates the need to schedulebusiness application may also require system downtime, with downtime, while ensuring ongoing access to application data.similar costs and conflicts. The capability also allows storage teams to proactively imple- ment critical fixes rather than wait for scheduled downtimeThe IBM XIV Storage System is designed and implemented windows, ensuring continuous availability and preventingto grow, shrink or change without the need to reconfigure or costs resulting from escalation of issues left untreated.shut down the system at any time. The administrative headachesenumerated above have been significantly reduced or eliminated XIV Storage System: Loweringthrough the XIV system’s single-tier, constantly balanced backup/restore costsarchitecture. With traditional enterprise systems, backup and restore processes are costly. Traditional backup processes involveThe XIV architecture allows hardware components to be added the writing of full volumes of data onto additional storageto or removed from a new or existing, operational XIV system space, including the copying of unused space that has neverwithout downtime. XIV storage provides an easy and seamless been written to.nondisruptive procedure for component changes with littlemanagement effort and no disruption. Upon any physical The XIV Storage System handles backup by copying only thecapacity change, the system automatically redistributes blocks of data that have actually been written to—it does notvolume data, maintaining full system equilibrium. copy zeroes. In contrast to the high rates of unused space in legacy systems, the XIV approach greatly reduces the time andThe XIV Storage System’s built-in, redundant UPS units space that backups require and, consequently, the costs involved.provide ongoing protection against data loss while increasingreliability by avoiding the wear and tear to electronic and In addition, XIV storage offers logical backup and low-costelectromechanical parts caused by inevitable data surges. By recovery through thousands of snapshots. This innovativesparing its hardware parts undue exposure to fluctuating power, mechanism allows organizations to expand and fortify theirXIV storage essentially lengthens the lifespan of these parts, backup practices without necessarily increasing their physicalsaving costs by bringing their shelf life closer to their theoretical capacity needs.lifespan. XIV storage offers snapshots on demand, with no administrative overhead or perceptible degradation in system performance. Thousands of snapshots can significantly reduce storage
  14. 14. 14 Driving down enterprise storage TCO with the IBM XIV Storage Systemrequirements, contributing further to the system’s low overall Appendix: Cost savings formulasTCO. The efficiency of XIV snapshots and the ease of restore The formulas below enable the calculation of environmentalenable the use of snapshots as a hot backup mechanism at almost savings that can be realized through the use of the XIV Storageno cost. system. Examples are provided for Fibre Channel drives of dif- ferent capacities that are typically used by traditional storageXIV Storage System: Proven TCO savings systems, and in RAID-1 and RAID-5 (5+1) configurations. Toin the field make similar calculations for a RAID-6 (4+2) installation, simplyAnalysts have demonstrated that XIV ownership costs are replace the 0.8 coefficient by 0.75.69 percent lower than those of comparable systems.1 XIVcustomer savings echo analysts’ findings, and below are a Floor space savingsfew examples of how XIV storage has brought savings to With higher density drives, XIV storage can meet the sameorganizations across various industries: needs as competing systems but with fewer drives. To determine the savings in floor space that can result from using the XIVCnam (Education; France): TCO cut by 60 percent—Video system’s high density drives, input values relevant to your storageDenbury (Chemicals and petroleum; US): Storage administration operation in the formulas below.down by up to 80 percentLuxembourg Stock Exchange (Financial Services; Europe): G To compare RAID-1 drives to XIV’s very high density drives,TCO reduced by 70 percent—Video in English, French use the following formula:and German % savings in floor space = {1 - (your FC drive capacity) /Bluewater Power (Energy and utilities; Canada): 60 to 70 percent (XIV system drive capacity)} * 100reduction in storage provision and management time and50 percent reduction in rack space For example: Assuming you are comparing your existing 450 GB drives to the XIV system’s 2 TB (2000 GB) drives, the floorConclusion space savings is calculated as follows:A storage system’s total cost of operation is made up of a com- % savings in floor space = {1 - (450) / (2000)} *plex blend of obvious and less evident factors. It is critical to look 100 = 77.5%beyond superficial TCO components, such as initial cost andpower, and consider the indirect factors that incur costs over G To compare RAID-5 drives to the XIV system’s very hightime. The IBM XIV Storage System is designed to reduce both density drives, use the following formula:direct and indirect costs, among other ways, by making storage % savings in floor space = {1 - 0.8(your FC drivesimple to deploy while keeping data protected from risk and capacity) / 0.5(XIV system drive capacity)} * 100maintaining high availability.
  15. 15. IBM Systems and Technology 15For example: Assuming you are comparing your existing For example: Assuming you are comparing your existing 146 GBRAID-5 300 GB drives to the XIV system’s 2 TB (2000 GB) drives to the XIV system’s 2 TB (1000 GB) drives, the powerdrives, the floor space savings is calculated as follows: and cooling savings are calculated as follows: % savings in floor space = {1 – 0.8*(300) / 0.5*(2000)} * % savings in power and cooling = {1 – 0.75(146)/ (1000)} 100 = 76% * 100 = 89%To calculate your actual savings, multiply the resulting percent- G To compare RAID-5 drives to the XIV system’s very highage by the real cost of the floor space currently used by your density drives, use the following formula:storage system. % savings in power and cooling = {1 – 0.75 [0.8(your drive size)] / [0.5(the XIV system drive size)]} * 100Your potential savings may be even greater should your datacenter be at its physical limits. It should be noted that choosing G To compare 450 GB RAID-5 drives to the XIV system’s 2 TBXIV storage may allow renovations or relocation to a larger (2000 GB) drives, use the following formula:facility to be delayed or avoided, saving the expense and disrup- % savings in power and cooling = {1 – 0.75 * [0.8 *tion of such a change. (450)] / [0.5 * 2000]} * 100 = 73%Power and cooling savings As noted, to make similar calculations for a RAID-6 (4+2) array,High density drives are more efficient to operate than Fibre simply replace the 0.8 coefficient in the formulas with 0.75.Channel drives. The XIV system’s ability to meet the sameneeds with fewer drives and through greater efficiency per drive Use your own figures to calculate your potential savings. Applycreates corresponding cost savings in power and cooling. the percentage that you calculate to your data center’s current utility bills to understand the significance that these savings canTo determine potential power and cooling savings resulting from have on your annual budget.replacing your present drives with the XIV system’s very highdensity drives, use values relevant to your storage operation in For more informationthe formulas below. To learn more about IBM XIV Storage Systems, please contact your IBM marketing representative or IBM Business Partner orG To compare RAID-1 drives to XIV’s drives, use the following visit formula: % savings in power and cooling = {1 – 0.75 (your drive Additionally, financing solutions from IBM Global Financing size) / (XIV system drive size)} * 100 can enable effective cash management, protection from technol- ogy obsolescence, improved total cost of ownership and return on investment. Also, our Global Asset Recovery Services help address environmental concerns with new, more energy-efficient solutions. For more information on IBM Global Financing, visit:
  16. 16. © Copyright IBM Corporation 2011 IBM Systems and Technology Group Route 100 Somers, NY 10589 U.S.A. Produced in the United States of America September 2011 All Rights Reserved IBM, the IBM logo, and XIV are trademarks of International Business Machines Corporation in the United States, other countries or both. If these and other IBM trademarked terms are marked on their first occurrence in this information with a trademark symbol (® or ™), these symbols indicate U.S. registered or common law trademarks owned by IBM at the time this information was published. Such trademarks may also be registered or common law trademarks in other countries. A current list of IBM trademarks is available on the web at “Copyright and trademark information” at Other company, product or service names may be trademarks or service marks of others. This document could include technical inaccuracies or typographical errors. IBM may make changes, improvements or alterations to the products, programs and services described in this document, including termination of such products, programs and services, at any time and without notice. Any statements regarding IBM’s future direction and intent are subject to change or withdrawal without notice, and represent goals and objectives only. The information contained in this document is current as of the initial date of publication only and is subject to change without notice. IBM shall have no responsibility to update such information. IBM is not responsible for the performance or interoperability of any non-IBM products discussed herein. Performance data for IBM and non-IBM products and services contained in this document was derived under specific operating and environmental conditions. The actual results obtained by any party implementing such products or services will depend on a large number of factors specific to such party’s operating environment and may vary significantly. IBM makes no representation that these results can be expected or obtained in any implementation of any such products or services. The information in this document is provided “as-is” without any warranty, either expressed or implied.1 ITG, Cost/Benefit Case for IBM XIV Systems: Comparing Cost Structures for IBM XIV and EMC V-Max Systems, International Technology Group Santa Cruz, California, July 20112 IBM Systems and Technology, Driving down power consumption with the IBM XIV Storage System, IBM, July 2011 Please Recycle TSW03091-USEN-01