Have You Looked at Tape Lately?
If you haven't, you should look again. Did you know that 70% of companies currently use a combination of tape and disk for interim backup, and 58% of companies that only use disk for backup are planning to add tape for interim storage? Learn why companies are coming back to tape.
Tape, far from being dead, is increasingly necessary in data centers and as the emphasis on the green data center continues, tape will become increasingly important. Its future provides additional possibilities not available through the use of other storage methods, including disk.
Introduction
Spectra Logic, with 30 years experience in the fast moving field of high technology, is committed to protecting data—your data. Spectra has extensive expertise with all forms of backup, and therefore understands the continuing and increasingly important role of tape in protecting data. To that end, Spectra Logic has set itself a goal: Tape Without Pain.
Have You Looked at Tape Lately?
Tape has the misfortune of serving as the point revealing backup success, along with failure, which is more acutely remembered. Backup failure and its association with tape has let disk vendors promote disk as a cure all for the backup blues. In fact, disk vendors have successfully promoted disk to the point that it is and has been considered more press worthy than tape for some years. At the same time and without fanfare, tape has continued to evolve into media that, when coupled with the best automation, serves extremely reliably and in ways that disk simply cannot.
In fact, now that users have implemented disk as backup over the last few years, the majority of disk only data centers—68 percent—plan to add tape back into their data protection environment. Although disk is a very valuable asset in protecting data, it is not a utopian solution that solves all data backup woes. Tape’s indispensability is slowly being acknowledged, even by disk aficionados.
Tape is Fast
Tape drives now write data faster than most networks can transfer it. “LTO [generations have] seen a geometric increase in […] performance since their introduction at the turn of this past
century.”1
“With native transfer rates of up to 120MB/s, the LTO 4 tape drives stream up to 864GB of 2:1 compressed data per hour, easily equaling or surpassing the backup speed of the majority of today’s disk drives in data streaming applications.”2 And while disk has incredibly high burst transfer rates, a recently released enterprise class hard drive is advertised as “the first drive to break the 100 MB sustained transfer rate barrier, delivering up to 125 MB/s.” The LTO 43 tape drive’s 240 MB/s compressed is simply faster than disk’s “breakthrough” rate of 125 MB/s. LTO 5 is even faster, with a native transfer rate of 140 MB/s, and 280 MB/s compressed.
Disk is fast, too—but the key question is, fast at what? The answer: disk gets to individual files and restores them very quickly thanks to its random access method of storing and retrieving information. This underlies the proper use of disk in data backup and archival strategies: rapid data retrieval. Tape is also fast, specifically when backing up and restoring large quantities of streaming data. It is illogical to use disk to achieve faster backup or to reduce backup windows when tape is faster than disk at storing large quantities of data. Disk is fast. So is tape. Used properly, each is key to a strong backup and archival process.
Tape is Reliable
A number of myths have grown up around tape reliability. This was spawned in part by some unreliable media technologies—notably DLT. Even so, the vast majority of failures that created this myth are caused by sources other than tape: human, software and system errors.
Technological advances have improved LTO technology reliability by more than 700% over the past decade. “Advances in the coating of tape film, read after write data verification and powerful error correction codes provide confidence in the integrity of data stored on tape. These robust tape cartridges are coupled with drive technology that features simpler tape paths and servo tracking systems to promote error free tape handling.”4
Tape reliability improvements do not stop at just media and drive improvements. Tape library vendors such as Spectra Logic have added intelligence into the library that has greatly increased tape’s reliability through automation features.
Tape is Affordable
Increasing Capacity: Each generation of LTO has roughly doubled in capacity.
Cost per Gigabyte: Compared5 to disk pricing, tape remains unarguably the most affordable media in terms of cost per gigabyte. Experts in the storage industry predict that this will continue as new generations of tape and disk are released. It is worth noting that in assessing cost per gigabyte, the disk and library costs are evaluated in the context of working systems, to take into account otherwise hidden infrastructure costs. Typically, disk vendors include only the cost of a single gigabyte of disk without including the cost of controllers and other components required to actually use of a gigabyte of disk.
Power use: Especially compared to disk, tape is extremely energy efficient. Disk is typically always spinning–using energy—while tape is capable of storing data without requiring any power. A Clipper6 Group analysis compares real world costs of powering similarly configured tape and disk systems. The difference in cost is startling between the site used in the study scenario, with a savings of well over half a million dollars. Savings alone are a compelling incentive to use tape wisely in a data center, rather than moving solely to disk.
What is Tape without Pain?
Spectra is building on tape’s technological advances by continually enhancing libraries with features that:
o Proactively manage the environment to help prevent users from being caught by surprise due to component, media or data integrity issues
o Optimize data protection in the data center through blended tape and disk solutions
o Curb obsolescence with technology that withstands the test of time
These features provide an experience of tape without pain.
Never Caught by Surprise: Proactive Management
Proactively managing tape helps take away the sting of unwelcome surprises. Spectra libraries provide proactive management features, singular in scope and unique in straightforward usefulness that let you prevent unwanted surprises.
o Remove ailing tapes before critical data is stored on them through the use of Media Lifecycle Management (MLM). MLM takes the mystery out of media management by monitoring and identifying faulty media. Retire these tapes before they store critical data.
o Spectra libraries ensure library health through Library Lifecycle Management (LLM). By monitoring and tracking hardware components over their lifetime, administrators can identify components that may be ailing, well before errors occur.
o Identifying and removing problem drives before they affect operations, through Drive Lifecycle Management.
o One last surprise that organizations do not want: ad hoc costs that may result from lost tapes. Spectra Logic can’t make sure that the tapes are where they are supposed to be, but Spectra libraries can, at no charge, encrypt data as it is written to tape, resulting in data security regardless of the tape’s location.
MLM: Checking Tape Health
An InfoStor summary7 of annual readers’ surveys reports that one of the major causes of failed backups is media. Identifying failing tapes early so that administrators can remove them from rotation greatly improves backup reliability. MLM lets administrators do just that, and is included at no extra charge in Spectra T series libraries. Throughout the life of a Spectra Certified LTO cartridge used in Spectra libraries, data about the tape is continuously added to the cartridge memory chip. MLM uses that data to create reports that let administrators track tape health. Any tape that may be at risk is flagged, using an algorithm that takes into account multiple factors about the tape, including number of uses and number of errors over time.
Healthy Tape for Long-term Data Storage
Moving data off site and storing it for a potentially lengthy period are critical for recovering from disaster. Tape is the only technology that is easily moved off site and that has proven long term storage capabilities. With MLM, administrators have an additional layer of protection by having access to more information about the health of their tapes before the tapes are stored for the long term.
DLM: Managing Drive Health
BlueScale Drive Lifecycle Management provides a suite of easy to use tools and reporting so you can track and test drive health. Use DLM to identify drives that may be at risk, so you can act before a drive issue affects backup operations. The easy to use red/yellow/green icons, also used with MLM, make it easy to check drive health at a glance.
LLM: Managing Library Health
BlueScale Library Lifecycle Management (LLM) tracks library health, including component specific thresholds that, when met, automatically alert administrators, so library performance can be optimized.
Encryption: Lost Tapes Don’t Have to Mean Data at Risk
All libraries using LTO 4 and subsequent generation drives can encrypt data. But most of those libraries do not let you decrypt the data without additional, complex, and often costly software, hardware, or both.
Encryption uses keys as the basis for the encryption algorithm. The encryption is permanent unless you have a way to track those keys and use them as necessary to decrypt and restore data. Only Spectra libraries provide key management at no extra charge, integrated with the library’s existing management interface. Finding out that tapes are lost may be a surprise, but at least with Spectra libraries and well thought out backup processes, the surprise is tempered in that the data won’t be at risk for use by unauthorized third parties.
Spectra Blended Storage: Tape and Disk
The backup and archive landscape has changed a great deal over the past decade. New demands, including rapid data retrieval for e discovery and remote data replication, have become the norm in data protection. Tape doesn’t meet these needs, and introduces pain when administrators try to use it for purposes that it was not designed for. That’s where disk comes into play.
Spectra Logic’s nTier disk is designed for backup and archive processes, and to integrate with tape—especially Spectra tape libraries. Spectra’s disk supports rapid file retrieval, and can further supply:
o Disk to Disk to Tape (D2D2T) functionality
o Virtual Tape Library (VTL) technology
o Deduplication and remote replication
o Continuous data protection
Disk is superior at rapid retrieval of individual files. Spectra nTier disk supplies this capability at enhanced speeds and simultaneously provides seamless integration with tape.
Curbing Obsolescence
Spectra Logic builds hardware and software modularly, so technological enhancements can be seamlessly integrated. Spectra Logic technology withstands the test of time.
o Spectra Logic tape libraries provide an economical use of floor space and power that is unparalleled by any competing tape automation technology
o Spectra Logic libraries provide scalability needed to support long term data growth.
o Spectra Logic libraries are easy to manage and built to integrate new technologies as they become available and important to backup.
o Spectra Logic itself has been around for thirty years, so IT administrators can be reassured by Spectra’s stability and longevity.
Investment Protection and Low TCO: Space and Power Conservation
Spectra libraries, including the Spectra T950, provide significant, quantifiable advantages8 in space and power use, when directly comparing a wide range of configurations of libraries from other vendors. One of the charts below shows density advantages when comparing libraries where each is configured to its maximum capacity, which should, in theory, be best case for all.
The T950 stores an additional 33 to 100 more tapes per square foot than competing libraries store, when those libraries are configured to store their maximum capacities. T950 advantages hold steady when evaluating energy use across competing libraries.
Accommodating Data Growth
The modular design of Spectra’s libraries makes it easy to scale in capacity, performance or both. With smaller Spectra T series libraries, administrators can protect the initial investment in Spectra technology through TranScaling. This lets administrators keep library components already purchased and simply move them to a larger chassis. At the same time, the library’s identity to the wider network and its configuration data travel with it to the larger enclosure. This preserves both your initial investment in the library and the time already spent fine tuning the library’s configuration. Power supplies, drives, and multiple controllers are just a few of the many parts that can be TranScaled.
On-Going Adaptation
Spectra T series libraries use a modular hardware and software design that supports integration of new technology as it becomes available and necessary. The library’s core intelligence, the BlueScale environment, supports a graphical interface available remotely through a web browser and through the library’s front panel touch screen. This interface is common across all T series libraries, and an easily support advanced features as they are added, such as encryption and MLM. By adding features to existing libraries, the need for a forklift upgrade and the purchase of extra backup appliances is minimized. This contributes to Spectra library longevity in the data center, protecting the initial investment.
Library Manufacturer Stability and Longevity
Given the current economic uncertainties, it becomes increasingly important to determine the health of the library manufacturer, and the level of the vendor’s commitment to tape and its automation. Few library designers/manufacturers remain. Of these, Spectra Logic is the only vendor who has demonstrated a long term commitment to tape.
Why Tape is Indispensable
Tape does some things that simply aren’t possible with disk. Tape protects data across years, protects against data infection across networked servers, and protects data from hacker attacks. Tape is indispensable for the reasons9 discussed in this white paper. Tape provides:
o Affordability in storing continuing data growth data expected to grow 6x by 201010—compared to all other storage methods commonly used, including disk
o Off site storage to protect data in cases of disaster
o Power savings compared to all other storage methods commonly used, including disk
o Floor space savings compared to all other common storage methods, including disk
o Data security through encryption that secures data as it is physically transported
o Long archival life to protect data over the long term to meet compliance requirements
o Proven long term data storage critical to disaster recovery efforts
Conclusion
Although the innovations in tape and its automation have been largely overlooked by the industry press, tape has steadily matured so that it now addresses tape related issues that used to concern IT administrators. In addition, increasing regulatory demands have added to the importance of tape in a data center, given its proven shelf life, off line energy savings, and affordability.
Tape, far from being dead, is increasingly necessary in data centers. Spectra Logic promises to continue its long history and successful methods of providing tape without pain.
1 Reine, David. “Tape Density Evolution? No — Revolution!” The Clipper Group Captain's Log, Report #TCG2008037R, May 24, 2006.
2 Beech, Debbie. “Best Practices for backup and long term data retention” Sylvatica white paper: The evolving role of disk and tape in the data center. June 2009
3 Note that LTO 5 tape technology is available for pre purchase now from Spectra Logic. Please see the web site or contract a sales representative for more information.
4 Beech; see earlier.
5 Moore, Fred. Storage Navigator, Horison Information Strategies, 2008.
6 McAdam, Dianne. “Tape and Disk Costs—What It Really Costs to Power the Devices” Report #TCG2006046L The Clipper Group Explorer, June 4 2006.
7 Simpson, Dave. Reader survey reveals backup and recovery trends, InfoStor, annual survey. Copyright 2009.
8 Reports with data supporting these analyses are available on request.
9 HP. Tape will outlive us all. White paper. www.hp.com/go/tape
10 IDC, The Expanding Digital Universe, March 2007
TriAxis Note: to see a more detailed report, as the above is the summary, click here and you will be brought to Spectra's site. Or, contact Tom Mumford tom.mumford@triaxis.com or at 877-TRIAXIS (874-2947) x101 and he will be glad to forward it to you directly
» print friendly version
Tape Without Pain
Tape, far from being dead, is increasingly necessary in data centers and as the emphasis on the green data center continues, tape will become increasingly important. Its future provides additional possibilities not available through the use of other storage methods, including disk.
Introduction
Spectra Logic, with 30 years experience in the fast moving field of high technology, is committed to protecting data—your data. Spectra has extensive expertise with all forms of backup, and therefore understands the continuing and increasingly important role of tape in protecting data. To that end, Spectra Logic has set itself a goal: Tape Without Pain.
Have You Looked at Tape Lately?
Tape has the misfortune of serving as the point revealing backup success, along with failure, which is more acutely remembered. Backup failure and its association with tape has let disk vendors promote disk as a cure all for the backup blues. In fact, disk vendors have successfully promoted disk to the point that it is and has been considered more press worthy than tape for some years. At the same time and without fanfare, tape has continued to evolve into media that, when coupled with the best automation, serves extremely reliably and in ways that disk simply cannot.
In fact, now that users have implemented disk as backup over the last few years, the majority of disk only data centers—68 percent—plan to add tape back into their data protection environment. Although disk is a very valuable asset in protecting data, it is not a utopian solution that solves all data backup woes. Tape’s indispensability is slowly being acknowledged, even by disk aficionados.
Tape is Fast
Tape drives now write data faster than most networks can transfer it. “LTO [generations have] seen a geometric increase in […] performance since their introduction at the turn of this past
century.”1
“With native transfer rates of up to 120MB/s, the LTO 4 tape drives stream up to 864GB of 2:1 compressed data per hour, easily equaling or surpassing the backup speed of the majority of today’s disk drives in data streaming applications.”2 And while disk has incredibly high burst transfer rates, a recently released enterprise class hard drive is advertised as “the first drive to break the 100 MB sustained transfer rate barrier, delivering up to 125 MB/s.” The LTO 43 tape drive’s 240 MB/s compressed is simply faster than disk’s “breakthrough” rate of 125 MB/s. LTO 5 is even faster, with a native transfer rate of 140 MB/s, and 280 MB/s compressed.
Disk is fast, too—but the key question is, fast at what? The answer: disk gets to individual files and restores them very quickly thanks to its random access method of storing and retrieving information. This underlies the proper use of disk in data backup and archival strategies: rapid data retrieval. Tape is also fast, specifically when backing up and restoring large quantities of streaming data. It is illogical to use disk to achieve faster backup or to reduce backup windows when tape is faster than disk at storing large quantities of data. Disk is fast. So is tape. Used properly, each is key to a strong backup and archival process.
Tape is Reliable
A number of myths have grown up around tape reliability. This was spawned in part by some unreliable media technologies—notably DLT. Even so, the vast majority of failures that created this myth are caused by sources other than tape: human, software and system errors.
Technological advances have improved LTO technology reliability by more than 700% over the past decade. “Advances in the coating of tape film, read after write data verification and powerful error correction codes provide confidence in the integrity of data stored on tape. These robust tape cartridges are coupled with drive technology that features simpler tape paths and servo tracking systems to promote error free tape handling.”4
Tape reliability improvements do not stop at just media and drive improvements. Tape library vendors such as Spectra Logic have added intelligence into the library that has greatly increased tape’s reliability through automation features.
Tape is Affordable
Increasing Capacity: Each generation of LTO has roughly doubled in capacity.
Cost per Gigabyte: Compared5 to disk pricing, tape remains unarguably the most affordable media in terms of cost per gigabyte. Experts in the storage industry predict that this will continue as new generations of tape and disk are released. It is worth noting that in assessing cost per gigabyte, the disk and library costs are evaluated in the context of working systems, to take into account otherwise hidden infrastructure costs. Typically, disk vendors include only the cost of a single gigabyte of disk without including the cost of controllers and other components required to actually use of a gigabyte of disk.
Power use: Especially compared to disk, tape is extremely energy efficient. Disk is typically always spinning–using energy—while tape is capable of storing data without requiring any power. A Clipper6 Group analysis compares real world costs of powering similarly configured tape and disk systems. The difference in cost is startling between the site used in the study scenario, with a savings of well over half a million dollars. Savings alone are a compelling incentive to use tape wisely in a data center, rather than moving solely to disk.
What is Tape without Pain?
Spectra is building on tape’s technological advances by continually enhancing libraries with features that:
o Proactively manage the environment to help prevent users from being caught by surprise due to component, media or data integrity issues
o Optimize data protection in the data center through blended tape and disk solutions
o Curb obsolescence with technology that withstands the test of time
These features provide an experience of tape without pain.
Never Caught by Surprise: Proactive Management
Proactively managing tape helps take away the sting of unwelcome surprises. Spectra libraries provide proactive management features, singular in scope and unique in straightforward usefulness that let you prevent unwanted surprises.
o Remove ailing tapes before critical data is stored on them through the use of Media Lifecycle Management (MLM). MLM takes the mystery out of media management by monitoring and identifying faulty media. Retire these tapes before they store critical data.
o Spectra libraries ensure library health through Library Lifecycle Management (LLM). By monitoring and tracking hardware components over their lifetime, administrators can identify components that may be ailing, well before errors occur.
o Identifying and removing problem drives before they affect operations, through Drive Lifecycle Management.
o One last surprise that organizations do not want: ad hoc costs that may result from lost tapes. Spectra Logic can’t make sure that the tapes are where they are supposed to be, but Spectra libraries can, at no charge, encrypt data as it is written to tape, resulting in data security regardless of the tape’s location.
MLM: Checking Tape Health
An InfoStor summary7 of annual readers’ surveys reports that one of the major causes of failed backups is media. Identifying failing tapes early so that administrators can remove them from rotation greatly improves backup reliability. MLM lets administrators do just that, and is included at no extra charge in Spectra T series libraries. Throughout the life of a Spectra Certified LTO cartridge used in Spectra libraries, data about the tape is continuously added to the cartridge memory chip. MLM uses that data to create reports that let administrators track tape health. Any tape that may be at risk is flagged, using an algorithm that takes into account multiple factors about the tape, including number of uses and number of errors over time.
Healthy Tape for Long-term Data Storage
Moving data off site and storing it for a potentially lengthy period are critical for recovering from disaster. Tape is the only technology that is easily moved off site and that has proven long term storage capabilities. With MLM, administrators have an additional layer of protection by having access to more information about the health of their tapes before the tapes are stored for the long term.
DLM: Managing Drive Health
BlueScale Drive Lifecycle Management provides a suite of easy to use tools and reporting so you can track and test drive health. Use DLM to identify drives that may be at risk, so you can act before a drive issue affects backup operations. The easy to use red/yellow/green icons, also used with MLM, make it easy to check drive health at a glance.
LLM: Managing Library Health
BlueScale Library Lifecycle Management (LLM) tracks library health, including component specific thresholds that, when met, automatically alert administrators, so library performance can be optimized.
Encryption: Lost Tapes Don’t Have to Mean Data at Risk
All libraries using LTO 4 and subsequent generation drives can encrypt data. But most of those libraries do not let you decrypt the data without additional, complex, and often costly software, hardware, or both.
Encryption uses keys as the basis for the encryption algorithm. The encryption is permanent unless you have a way to track those keys and use them as necessary to decrypt and restore data. Only Spectra libraries provide key management at no extra charge, integrated with the library’s existing management interface. Finding out that tapes are lost may be a surprise, but at least with Spectra libraries and well thought out backup processes, the surprise is tempered in that the data won’t be at risk for use by unauthorized third parties.
Spectra Blended Storage: Tape and Disk
The backup and archive landscape has changed a great deal over the past decade. New demands, including rapid data retrieval for e discovery and remote data replication, have become the norm in data protection. Tape doesn’t meet these needs, and introduces pain when administrators try to use it for purposes that it was not designed for. That’s where disk comes into play.
Spectra Logic’s nTier disk is designed for backup and archive processes, and to integrate with tape—especially Spectra tape libraries. Spectra’s disk supports rapid file retrieval, and can further supply:
o Disk to Disk to Tape (D2D2T) functionality
o Virtual Tape Library (VTL) technology
o Deduplication and remote replication
o Continuous data protection
Disk is superior at rapid retrieval of individual files. Spectra nTier disk supplies this capability at enhanced speeds and simultaneously provides seamless integration with tape.
Curbing Obsolescence
Spectra Logic builds hardware and software modularly, so technological enhancements can be seamlessly integrated. Spectra Logic technology withstands the test of time.
o Spectra Logic tape libraries provide an economical use of floor space and power that is unparalleled by any competing tape automation technology
o Spectra Logic libraries provide scalability needed to support long term data growth.
o Spectra Logic libraries are easy to manage and built to integrate new technologies as they become available and important to backup.
o Spectra Logic itself has been around for thirty years, so IT administrators can be reassured by Spectra’s stability and longevity.
Investment Protection and Low TCO: Space and Power Conservation
Spectra libraries, including the Spectra T950, provide significant, quantifiable advantages8 in space and power use, when directly comparing a wide range of configurations of libraries from other vendors. One of the charts below shows density advantages when comparing libraries where each is configured to its maximum capacity, which should, in theory, be best case for all.
The T950 stores an additional 33 to 100 more tapes per square foot than competing libraries store, when those libraries are configured to store their maximum capacities. T950 advantages hold steady when evaluating energy use across competing libraries.
Accommodating Data Growth
The modular design of Spectra’s libraries makes it easy to scale in capacity, performance or both. With smaller Spectra T series libraries, administrators can protect the initial investment in Spectra technology through TranScaling. This lets administrators keep library components already purchased and simply move them to a larger chassis. At the same time, the library’s identity to the wider network and its configuration data travel with it to the larger enclosure. This preserves both your initial investment in the library and the time already spent fine tuning the library’s configuration. Power supplies, drives, and multiple controllers are just a few of the many parts that can be TranScaled.
On-Going Adaptation
Spectra T series libraries use a modular hardware and software design that supports integration of new technology as it becomes available and necessary. The library’s core intelligence, the BlueScale environment, supports a graphical interface available remotely through a web browser and through the library’s front panel touch screen. This interface is common across all T series libraries, and an easily support advanced features as they are added, such as encryption and MLM. By adding features to existing libraries, the need for a forklift upgrade and the purchase of extra backup appliances is minimized. This contributes to Spectra library longevity in the data center, protecting the initial investment.
Library Manufacturer Stability and Longevity
Given the current economic uncertainties, it becomes increasingly important to determine the health of the library manufacturer, and the level of the vendor’s commitment to tape and its automation. Few library designers/manufacturers remain. Of these, Spectra Logic is the only vendor who has demonstrated a long term commitment to tape.
Why Tape is Indispensable
Tape does some things that simply aren’t possible with disk. Tape protects data across years, protects against data infection across networked servers, and protects data from hacker attacks. Tape is indispensable for the reasons9 discussed in this white paper. Tape provides:
o Affordability in storing continuing data growth data expected to grow 6x by 201010—compared to all other storage methods commonly used, including disk
o Off site storage to protect data in cases of disaster
o Power savings compared to all other storage methods commonly used, including disk
o Floor space savings compared to all other common storage methods, including disk
o Data security through encryption that secures data as it is physically transported
o Long archival life to protect data over the long term to meet compliance requirements
o Proven long term data storage critical to disaster recovery efforts
Conclusion
Although the innovations in tape and its automation have been largely overlooked by the industry press, tape has steadily matured so that it now addresses tape related issues that used to concern IT administrators. In addition, increasing regulatory demands have added to the importance of tape in a data center, given its proven shelf life, off line energy savings, and affordability.
Tape, far from being dead, is increasingly necessary in data centers. Spectra Logic promises to continue its long history and successful methods of providing tape without pain.
1 Reine, David. “Tape Density Evolution? No — Revolution!” The Clipper Group Captain's Log, Report #TCG2008037R, May 24, 2006.
2 Beech, Debbie. “Best Practices for backup and long term data retention” Sylvatica white paper: The evolving role of disk and tape in the data center. June 2009
3 Note that LTO 5 tape technology is available for pre purchase now from Spectra Logic. Please see the web site or contract a sales representative for more information.
4 Beech; see earlier.
5 Moore, Fred. Storage Navigator, Horison Information Strategies, 2008.
6 McAdam, Dianne. “Tape and Disk Costs—What It Really Costs to Power the Devices” Report #TCG2006046L The Clipper Group Explorer, June 4 2006.
7 Simpson, Dave. Reader survey reveals backup and recovery trends, InfoStor, annual survey. Copyright 2009.
8 Reports with data supporting these analyses are available on request.
9 HP. Tape will outlive us all. White paper. www.hp.com/go/tape
10 IDC, The Expanding Digital Universe, March 2007
TriAxis Note: to see a more detailed report, as the above is the summary, click here and you will be brought to Spectra's site. Or, contact Tom Mumford tom.mumford@triaxis.com or at 877-TRIAXIS (874-2947) x101 and he will be glad to forward it to you directly
» print friendly version
