IBM Systems and Technology GroupSeptember 2009
IBM LTO products: a guide for the midmarket
IBM LTO products: a guide for the midmarketPage 2
Introduction
While disk storage has evolved greatly over the years, tape continues to be an
integral part of the storage hierarchy. For example, IBM studies show that our
clients store from four to 15 times more data on tape than disk. The reasons
provide substantiation for why tape storage is so popular. Compared to disk
storage, tape is:
• Cost-effective
• Uses less energy
• Is removable and portable
• Can hold high volumes of data
• Has a long life, and
• Is ideally suited for information availability, retention, security and compliance
Faced with an information explosion that means the need for more and affordable
storage, IT managers, trying to optimize space, storage and people can find IBM
tape storage the solution to many of your problems. The following information
will help you understand the advantages of choosing IBM as your vendor for
Linear Tape-Open (LTO) storage products.
2 Introduction
3 What are the benefits of LTO in
general and IBM LTO in particular?
5 The IBM difference
9 IBM, LTO and the midmarket
11 IBM financing for your midmarket
needs
12 Overview of IBM LTO tape storage
products
18 Environmental considerations
20 Why IBM storage solutions?
21 Conclusion
21 For more information
Contents
IBM LTO products: a guide for the midmarketPage 3
What are the benefits of LTO in general and IBM LTO in particular?
IBM LTO technology has evolved through four generations, with two more
planned. LTO is an open tape architecture developed by a consortium of three
world-class storage producers, including IBM..
LTO solutions have many advantages over other types of storage. For example,
LTO provides highly scalable tape backup that accommodates a wide range of
system formats. It easily integrates into current operating environments, and our
roadmap protects your investment today and in the future. The LTO Ultrium
format offers exceptional investment protection. As a truly open tape solution,
the Ultrium format has gained widespread industry acceptance from leading tape
drive, media, and automation companies. Simplified product planning means
faster cycle time for new features
IBM offers a complete family of solutions comprising tape drives and small-
medium- and large tape automation solutions that use the Ultrium ultra-
high-capacity recording format. This family delivers exceptional performance,
widespread availability, and a lower-price data storage solution:
• High reliability levels. When you entrust your data to a storage medium, you
want the very highest levels of reliability. For more than 55 years — longer than
any other major storage vendor — IBM has been leading the way in tape storage
technology
• High capacity. Up to 1.6 TB compressed or 800 GB of native capacity data can fit
on a single compact cartridge
• High data transfer rate. Sustained data transfer rates of up to 120 MB/second are
supported in the IBM LTO 4 generation
IBM LTO products: a guide for the midmarketPage 4
Our LTO Ultrium solutions are designed to grow with your needs, across
platforms and operating systems, and in fact, IBM has invented much of today’s
most advanced storage technology Did you know that:
• IBMintroducedthefirsttapedrivein1952andthefirstdiskdrivein1956.The
IBM LTO-based Ultrium format tape drives are simply the latest IBM storage
developmentstoleveragethisunparalleledtrackrecordofinnovationand
expertise.
• TheIBMUltriumformattechnologyleveragesearlierIBMinnovationsas
buildingblocksforenhancement.
• Thedramaticincreasesinlinearandtrackdensity,andtheuseofmulti-
track,linear-serpentinerecordingarenaturalextensionsofexistingIBMtape
technologies.
• Theenhancementsintapetrackandmagneto-resistive(MR)headtechnology
leveragethehighnumberofconcurrentchannelsandtrackdensitycharacteristics
of the LTO specifications.
• Theerrorcorrectioncode(ECC)usedintheIBMUltriumtapeproductsis
powerfulenoughtoensurereliablerecoveryofdataevenwiththelossofatrack
orhead.ThehighefficiencyECCisbasedonthesamearchitectureasexisting
IBM tape technologies
• WhenyouchooseIBM,youhaveimmediateaccesstoanend-to-endsolution
whatever the requirement. From individual tape drives to ultra-scalable libraries
todisk,IBMhasasolutionforyourneeds.
IBM LTO products: a guide for the midmarketPage 5
The IBM difference
IBM has superior quality and reliability specifications for its media, drives and
automation. For example, “IBM LTO-4 media specifications go well beyond
standard LTO specifications. Here are some examples of the quality and
reliability that we build into our products.
IBM media is built to rigorous IBM specifications
IBM media undergoes far more testing than any other tape media, even non-IBM branded media manufactured in the same plant.
• Asanexample,IBMMediaundergoesEnvironmentalDurabilityTestsatall
“ five corners” of the temperature and humidity extremes. It is our belief that only
IBMputsmediathroughitsentirelifecycle(300completefullfilepasses*)at
eachpoint(Warm/Wet,Hot/Wet,Hot/Dry,Cold/DryandCold/Wet).Manyother
vendorsmaytakecartridgesamplesthrougheachextremepoint,butmaynotput
the cartridge through its entire life cycle at each data point.
• Commonality of Format does not imply commoditization. LTO Consortium
Certification is not a statement of quality. Certification only promises
interchangeability and capacity specification at a minimum quality. IBM
has superior quality and reliability specifications for its media, drives and
automation. For example, IBM LTO4 media specifications go well beyond
standard LTO specifications by ensuring that the media will be capable of
adhering to and be covered by warranty to the following specifications:
– 300fullfilepasses
– 1 million head passes
– 20,000 short section durability passes at all environments
– 20,000 load/unload cycles
IBM LTO products: a guide for the midmarketPage 6
(Note:FullFilePassisaprocessthatfillsanentiretape.Afullfilepassofan
IBMLTO4cartridgerequiressixteentrackstobewrittenfromoneendoftape
to the other and repeating this process 56 times to completely fill the 800 GB
cartridge. Other vendors may consider a full file pass to be simply one “round
trip”frombeginningoftapetoendoftapeandback.Thereare28“roundtrips”
in a full file pass.
• IBM Media is used as the Master Standard Reference Tape at the Measurement
AssuranceCorporation,thethirdpartythatperformscompliancetestingforthe
LTOconsortium.TheMasterStandardReferenceTapeisthetapemediathatall
other vendors are compared against. Being chosen as the MSRT is an indication
of predictability and consistency from cartridge to cartridge so that the standard
doesnotchange.IBMhasbeentheMSRTsupplierforallfourLTOgenerations.
• IBMhasthemostextensivesuiteofstresstestsbuiltoveryearsoftapemedia
development for stress testing media in real and extreme customer environments.
While the content of this test suite is proprietary, the history and experience we
have in continuing to develop our testing methods means we have discovered how
to solve problems that other vendors haven’t even discovered are problems.
IBM LTO products: a guide for the midmarketPage 7
IBM Media is designed for increased reliability, performance, stability
and durability
• TheIBMLTOcartridgeusesanultra-thin dual coating system which provides
increaseddurabilityandstability.Ensuringanultra-thinmagneticlayeris
critical to the life of a cartridge, as the higher areal density media requires a very
lowbackgroundsignalnoisetoensurethatdata,oncewritten,willnotbecome
alteredduetosignal-to-noiseloss.ThisDualCoatProcesswasdevelopedbyour
media manufacturing partner Fujifilm, and this thin magnetic coat, as a result,
delivers long shelf life and durability.
• TheIBMLTOcartridgehasLTOCM(cartridgememory)chip.Duringthemedia
(unload/load)cycles,theCM8KBmemorychipusesaradiofrequencyinterface
that eliminates any need for a physical power or signal connection between the
cartridge and the drive. It holds information about data location, usage/error
logs,anduserareas.Itprovidesaquickreferencetothecartridge’sindexand
usage information, facilitates problem diagnosis and helps with failure prediction,
minimizes load time, and provides fast access to and high-speed restoration from
files and data sets regardless of their location on the tape cartridge.
• IncludesimprovedPENsubstratewhichisverystableunderchanging
environmental conditions
• Usesdualservotracksforextremelyfineplacementcontrolandredundancyin
the event of tape damage
• Usesadvancedslittingtechnology
• Resultsinmaximumedgequality,ensuringsuperiorreliability,enhanced
performance and reduced debris
IBM LTO products: a guide for the midmarketPage 8
IBM Drives and IBM Media are designed and developed together
One cannot overstate the significance in building a cartridge to work with a
particular drive, or a drive with a particular cartridge. And, IBM drives are found
in tape libraries from SUN (STK), Dell, ADIC and many others.
• IBMLTOTapedrivesemployspecificpatentedtechnologies,whichfurther
enhance the capabilities of IBM’s LTO media when used together:
– PatentedMagnetoResistiveflatlappedheaddesign–Helpsreducetapewear
by decreasing the tape to head contact found in typical tape drives. IBM
LTOtapeiskeptinplacewithminimalfrictionusingnormalairpressureto
keepthetapeinpropercontactwiththeheadreadandwriteselements.This
head design helps improve performance, accuracy and reliability of reads and
writes and helps to reduce tape media and drive head wear.
– Patentedsurfacecontrolguidingsystem–Allowsforlessdebrisgeneration
and increased performance. The flat lapped heads and surface control
guidance system help contribute to overall high data integrity in the IBM LTO
tape drives.
– GroovedRollerSurfaceControlGuiding–Helpstostabilizethelateral
movement of tape across the head, reducing the amount of re-reads or writes
that might occur if the tape path weren’t so stable. The two inner most rollers
are actually grooved, which causes air to “bleed-out” from underneath the
surface of the tape, allowing more precise guiding of the tape without having
torelyuponedgeguidinglikedoneonmanyothersystems.
IBM LTO products: a guide for the midmarketPage 9
IBM, LTO and the midmarket
With smaller, more agile rivals on one side and larger, more powerful ones on
the other, medium companies such as yours must respond rapidly in a changing,
competitive environment. Current market data shows that medium businesses
face an array of challenges specific to their unique position in the marketplace.
Security issues, for example, remain a top priority, while the need for real-world
business intelligence has become a top driver of new technology implementation.
Companies must ensure product and services differentiation to compete in an
ever-changing marketplace and be nimble enough to adapt to those changes.
Other market trends shaping the business landscape, such as information
on demand or virtualization solutions, are also on the medium company’s
radar — although many businesses lack the resources to move in those directions
on their own.
Medium-sized companies need to compete at the highest level, maintain
business models and support systems flexible enough to prioritize and capture
the most valuable opportunities — and do all this with fewer resources than larger
enterprises. Also, organizations worldwide are required by law to store, manage
and safeguard more of their data than even before. Meeting these goals requires
some creativity and the right technology partner. More than ever, medium
companies are recognizing the advantage of technology solutions to help them
win in the marketplace.
IBM LTO products: a guide for the midmarketPage 10
IBM has renewed its commitment to addressing the needs of midsize businesses
(those with 100 to 1000 employees). We know that factors such as simplicity,
scalability and cost are critical considerations for smaller enterprises. That’s why
IBM offerings for midsize business conform to a set of strict requirements that
helps ensure usability, easy acquisition and implementation, flexibility and faster
return on investment.
For the majority of midsize businesses, the term “enterprise IT” brings to mind
two words: expensive and complex. But IBM LTO solutions for midsize businesses
are geared to ensuring that companies like yours can have all the power,
performance, security and reliability they need with a variety of products that
help meet data back up and restore needs — at an affordable cost, and with plenty
of room to grow.
IBM has a complete portfolio of solutions for midsize businesses that include
hardware, software, middleware, services and financing options.
IBM LTO products: a guide for the midmarketPage 11
IBM financing for your midmarket needs
IBM Global Financing, the lending and leasing business segment of IBM, has
designed financing options that can help clients in the midmarket defer upfront
investment costs for IBM hardware, software and services, thereby conserving
cash for other more pressing business priorities. IBM Financing Advantage
offers fast and simple financing at competitive rates, with simplified Web-based
processes to deliver credit, price and contracts in less than one hour.
For more information about IBM Global Financing’s offering for financing the
technology needs of midsize companies, visit IBM’s medium business financing
solutions site.
Highlights
Did you know? The tale of the tape
IBM tape storage has many reasons for
usage, whether in general or specific
to LTO. What makes LTO the right fit
and the ideal fit is listed here:
Energy consumption
A study of a midsize business storage
scenario found that a disk system can
cost 290 times more in power and
cooling than a tape system.1 As a rule,
tape drives and libraries consume far
less energy than disk drives and bays,
and tape cartridges require no energy
at all when stored.
IBM LTO products: a guide for the midmarketPage 12
Overview of IBM LTO tape storage products
The following are descriptions of LTO Ultrium tape drives, libraries and
autoloaders in our LTO portfolio.
IBM System Storage TS2240 Tape Drive Express Model
The IBM System Storage TS2240 Tape Drive Express Model is an external
drive incorporating the fourth generation of IBM LTO technology in a half-high
form factor. This is an external stand-alone or rack-mountable unit, similar to
previous models of the TS2230 and is the entry point for the IBM Ultrium tape
product family. The TS2240 supports encryption of data with a 3 Gbps SAS
connection. In addition, the TS2240 can read and write LTO Ultrium 3 Data
Cartridges and read LTO Ultrium 2 Data Cartridges. The TS2240 Tape Drive
provides an excellent migration path from digital linear tape (DLT or SDLT),
1/4-in., 4 mm, or 8 mm tape drives.
Cartridge capacity 800 GB native physical capacity
Interface 3 Gbps SAS
Max. drive data rate Up to 120 MB/sec native
IBM System Storage TS2340 Tape Drive Express Model
The IBM System Storage TS2340 Tape Drive Express Model is an external
drive incorporating the fourth generation of IBM LTO™ technology in a full high
form factor. This is an external stand-alone or rack-mountable unit, similar to
previous models of the IBM 3580 and is the entry point for the IBM Ultrium
tape product family. The TS2340 supports encryption of data and offers a 3 Gbps
SAS connection. In addition, the TS2340 can read and write LTO Ultrium 3
Data Cartridges and read LTO Ultrium 2 Data Cartridges.
Cartridge capacity 800 GB native physical capacity
Interface LVD SCSI, 3 Gbps SAS
Max. drive data rate Up to 120 MB/sec native
Price
A study of a midsize business storage
scenario found that a disk system
could cost 23 times more in total cost
than a tape system.2 Hardware, energy
consumption and floor space are
typically lower with tape.
The low cost per GB of tape storage is
approximately four cents per GB for an
LTO-4 cartridge,3 and that facilitates
keeping multiple copies of the data for
backup, recovery and archiving
purposes.
Removable disk cartridges cost
approximately $1.45 per GB 4
Automated tape and virtual tape
libraries with advanced backup and
archive management software reduce
or eliminate the need for IT staff,
allowing “people costs” required for
managing and maintaining disk- or
tape-based data protection solutions
to be roughly the same.5
Highlights
IBM LTO products: a guide for the midmarketPage 13
IBM System Storage TS2900 Tape Autoloader
The IBM System Storage TS2900 Tape Autoloader is a single-drive, low profile
automated tape solution and the first entry automation solution for small- to mid-
market tape environments. The TS2900 leverages the technology of IBM half-
high LTO tape drives to help create a high-capacity tape storage solution suited
for handling backup and archival data storage for the Windows®, Linux and
other open system environments.
Number of Drives 1
Maximum Number of Cartridges 9
Maximum System Capacity (2:1 Compression)
7.2 TB Native; 14.4 TB with 2:1 compression
Supported Platforms IBM Power™ Systems, IBM System x™, Intel® and other open systems server platforms.
Security
Encryption of data can safeguard
information unwittingly lost or
physically stolen. IBM tape drive
encryption is included in LTO
generation 4 at no additional cost.
IBM tape drive encryption was first to
market and it has been securing
customer’s information on tape
since 2007.
The impact of hardware encryption on
tape LTO drive performance is
expected to be typically less than one
percent.6
Highlights
IBM LTO products: a guide for the midmarketPage 14
IBM System Storage TS3100 Tape Library Express Model
The IBM TS3100 Tape Library Express Model is well–suited for handling
backup, save and restore and archival data–storage needs for small to medium–
size environments. With one Ultrium Full-High or up to two Ultrium Half–High
tape drives and 24 tape cartridge capacity, the IBM TS3100 model is designed
to leverage LTO technology to help cost-effectively handle growing storage
requirements.
• Designedtosupportcost-effectivebackup,saveandrestoreandarchivalstorage
in sequential or random access mode with a standard bar-code reader
• IBMUltrium4technologyisdesignedtosupportencryptionofdatawith3Gbps
SASandcontinuestosupportwrite-once,read-many(WORM)operations
• Designedtoofferoutstandingcapacity,performanceandreliabilityformidrange
andnetworktape–storageenvironmentsina2Uformfactorwith24data
cartridge slots and a mail slot
• RemotelibrarymanagementthroughastandardWebinterfacesupportsflexibility
and greater administrative control of storage operations
Number of Drives 1 Full High or1-2 Half High
Maximum Number of Cartridges 24
Maximum System Capacity (2:1 Compression)
38.4 TB
Supported Platforms IBM System p™, IBM System i™, IBM System x™ and other open systems
Reliability
Disaster recovery best practices
dictates that a copy of data be stored
at an offsite location.7 Tape is both
removable and transportable for
offsite storage.
LTO drives are specified with a Mean-
Time-Between-Failure rate (MTBF) of
250,000 hours at 100% duty cycle. This
metric is 700 percent more than the
MTBF of tape technologies created a
decade ago. *
The latest LTO-4 Ultrium tape drives
announced in early 2007 hold eight
times the capacity of the first LTO tape
drive launched in 2000: up to 1.6TBs of
compressed data, IBM has
successfully tested and projected to
enable the eight-terabyte (TB) tape
cartridge of the future. Eight TBs of
data is equivalent to the text in eight
million books, which would require 57
miles of bookshelves. All in a single
cartridge! Capacities are a result of lab
tests and are subject to change. *
Highlights
IBM LTO products: a guide for the midmarketPage 15
IBM System Storage TS3200 Tape Library Express Model
The IBM System Storage TS3200 Tape Library Express Model is designed for
backup, save and restore, and archival data-storage needs for small to medium-size
environments. The TS3200 is an external 4U standalone or rack-mountable unit
that incorporates up to two Full High Ultrium 4 or Ultrium 3 tape drives or up to
four Half High Ultrium 4 or Ultrium 3 tape drives and 48 tape cartridge slots.
• Designedtosupportcost-effectivebackup,saveandrestoreandarchivalstorage
in sequential or random access mode with a standard bar code reader
• IBMUltrium4technologyisdesignedtosupportencryptionofdatawith3Gbps
SASandcontinuestosupportWORMoperations
• Designedtoofferoutstandingcapacity,performanceandreliabilityformidrange
andnetworktape-storageenvironmentsina4Uformfactorwith48data
cartridge slots and a mail slot
• RemotelibrarymanagementthroughastandardWebinterfacesupportsflexibility
and greater administrative control of storage operations
Number of Drives Up to 2 Full High tape drivesUp to 4 Half High tape drives
Maximum Number of Cartridges 48 data cartridges
Maximum System Capacity (2:1 Compression)
76.8 TB compressed, Up to 38.4 TB native
Supported Platforms System i™, System p™, System x™, System z™, HP, Sun, UNIX® and Windows® servers
IBM LTO products: a guide for the midmarketPage 16
IBM System Storage TS3310 Tape Library
The IBM System Storage TS3310 Tape Library is a modular, scalable tape library
designed to address the tape storage needs of rapidly growing companies who
find themselves space and resource constrained with tape backup and other tape
applications.
Designed around a 5U high modular base library unit, the TS3310 is designed
to scale vertically with expansion for LTO tape cartridges, drives and redundant
power supplies.
The base library module, model L5B, is the entry point for the product family.
It contains all of the necessary robotics and intelligence to manage the 5U high
library system, which houses up to 41 cartridges (35 storage slots and 6 Input/
Output slots) and two LTO generation 4 and/or generation 3 tape drives.
The TS3310 model L5B can be expanded with the addition of expansion units,
the model E9U.
Number of Drives Up to 18 (max 2 drives for the base Model L5B library and 4 drives in each expansion unit Model E9U)
Maximum Number of Cartridges
Base Model L5B: 35 storage and 6 I/O. Expansion module, Model E9U: 92 storage or 80 storage and 12 I/O
Maximum System Capacity (2:1 Compression)
Over 644.8 TB in a 41U configuration or 56 TB in a Model L5B base library
Supported Platforms OS/400® V5R2, V5R3, or later; AIX 5L™ V5.1, V5.2, V5.3, or later; Sun Solaris 8 and 9; Microsoft® Windows® 2000; Microsoft Windows 2003; HP-UX 11.0, HP-UX 11.11 and HP-UX 11.232; Linux distributions: Red Hat Enterprise Linux version 4; SUSE Linux Enterprise Server 9
IBM LTO products: a guide for the midmarketPage 17
IBM System Storage TS3500 Tape Library
The IBM System Storage TS3500 Tape Library (TS3500 tape library) combines
IBM automation and drive technology to provide a highly scalable, automated
tape library for IBM System z and open systems backup and archive in midrange
to enterprise environments.
Number of Drives 12 per frame (192 per library)
Maximum Number of Cartridges 20,087 LTO,
Maximum System Capacity (2:1 Compression)
32.1 PB LTO at 2:1 compression,
Supported Platforms IBM AIX®; IBM OS/400®; IBM i; Windows® 2000; Windows Server® 2003; Linux; Sun Solaris; and HP-UX. IBM z/OS® (only with 3592 drives and additional hardware)
IBM LTO products: a guide for the midmarketPage 18
Environmental considerations
IBM is committed to environmental leadership in all of its business activities,
from its operations to the design of its products and use of its technology. IBM’s
corporate policy on environmental affairs, first issued in 1971, is supported by
the company’s global environmental management system. This is a key element
of IBM efforts to achieve results consistent with environmental leadership and
ensures that the company is vigilant in protecting the environment across all
of its operations worldwide. Here are some examples of IBM “green” efforts and
recognition for them:
• Recently,IBMwasnamedthetopcompanyforclimatechangestrategyand
practices in a report released by the Ceres investor coalition. The report
analyzedclimatechangegovernancepracticesat63oftheworld’slargestretail,
pharmaceutical, technology, apparel and other consumer-facing companies.
• Between1990and2007,IBMsaved4.6billionkWhofelectricityconsumption,
avoidednearly3.1millionmetrictonsofCO2emissions(equalto45percentof
thecompany’s1990globalCO2emissions)andsavedover$310millionthrough
its annual energy conservation actions alone.
• IBM’sprocurementofrenewableenergyandRECsincreasedfrom11millionkWh
in2001to455millionkWhin2007,whichaccountedfor8.5%ofIBM’stotal
2007globalelectricitypurchases.
• To further extend these achievements IBM set a “second generation” goal to
reduce CO2 emissions associated with IBM’s energy use by 12 percent between
2005 and 2012 through energy conservation, use of renewable energy and
fundingRECs.
IBM LTO products: a guide for the midmarketPage 19
IBM can help midsize organizations become more environmentally friendly
with a suite of offerings called Green IT solutions. These solutions, designed for
midmarket businesses, will help our clients to:
• Reduceoperationalandenergycosts
• MaketheirITenvironmentsmoreenergy-efficient
• Control and manage their power consumption and usage
• Disposeofold,unwantedITassetsinanenvironmentallyfriendlymanner.
For more information on environmental management at IBM, go to ibm.com/
ibm/environment/. For more information on IBM’s energy and environmental
solutions for a smarter planet, see ibm.com/ibm/green/index.shtml
IBM LTO products: a guide for the midmarketPage 20
Why IBM storage solutions?
IBM Storage solutions provide the capabilities needed to help organizations
reduce cost and mitigate risks while managing continued information growth and
service level demands. Dynamic environments, such as Cloud Computing and
Service Oriented Architecture, require scalable, always on information services
delivered by a robust information infrastructure foundation.
Storage is as important to a dynamic infrastructure as servers and networks.
Because of the explosion of information in most data centers, storage can be
more challenging to tame than server resources, but the payoff can be worth the
effort. IBM Information Infrastructure solutions can play a critical role in projects
impacting resiliency, security, energy efficiency, virtualization, asset management,
and service management. IBM Information Infrastructure is an initiative that
helps clients meet the challenges of today’s information explosion by helping to
improve competencies in four critical areas:
• Information availability
• Information security
• Information retention
• Information compliance
IBM Information Infrastructure and System Storage solutions can help you
manage information growth more effectively, dramatically improve service levels,
lower costs, mitigate risks, and extract new intelligence for business insight.
IBM LTO products: a guide for the midmarketPage 21
Conclusion
This white paper has examined the reasons that make IBM a top vendor of LTO
storage products. IBM offers superior quality and reliability specifications for
its media, drives and automation — IBM media is used as the Master Standard
Reference Tape in the industry. Finally, IBM uses an extensive suite of stress
tests built in over 55 years of tape media development. As a result, our products
offer performance and reliability that stand the test of time.
For more information
To learn more about IBM LTO tape storage products, please contact your IBM
marketing representative or IBM Business Partner, or visit the following Web
sites:
ibm.com/systems/storage/tape/index.html
ibm.com/systems/storage/resource/pguide/index.html
ibm.com/partnerworld/pwhome.nsf/weblook/mkt_bpic_innovation_centers.html
SGW01068-USEN-00
© Copyright IBM Corporation 2009
IBM Corporation New Orchard Road Armonk, NY 10564 U.S.A.
Produced in the United States of America
September 2009
All Rights Reserved
IBM, the IBM logo, ibm.com AIX, WebSphere and z/OS are trademarks or registered 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 ibm.com/legal/copytrade.shtml
Other product, company or service names may be trademarks or service marks of others.
1 The Clipper Group, Inc., “Disk and Tape Square Off Again,” February 13, 2008.
2 Ibid.
3 Based on current average internet purchase price (May 2009), of a single LTO-4 cartridge holding up to 1.6TBs with 2:1 data compression.
4 “Disk and Tape Square Off Again.”
5 SYLVATICA, “The Best Practices for backup and long-term data retention”, 2009.
6 IDEAS Comp, “Accelerating Performance and Expand-ing Tape’s Role for Lower TCO”, August 2007.
7 “The Best Practices for backup and long-term data retention”, 2009.
* Sylvatica white paper, “The evolving role of disk and tape in the data center: Best Practices for backup and long-term data retention,” by Debbie Beech. July 2009.