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  • Making the move from tape backup to disk backup
    issue disk will help Disk will typically yield a better utilization percentage than tape This is especially true when considering tapes that must be sent to an offsite tape vaulting facility at the end of each day full or not Marginal or questionable gains to consider Performance is often stated as one of the main drivers for switching to disk based backups When comparing throughputs high end disk can offer a significant performance advantage over tape However high end disk is seldom used as a backup target for cost reasons The preferred disk type for backups typically only offers a marginal performance increase over tape mostly because it eliminates tape media mount and data seek delays That said you must ask yourself if a three minute tape mount and two minute first data block seek time will cause you to fail to meet your established recovery time objective RTO maybe the backup method is the problem not the media and it might be time to start considering replication and high availability The disadvantages of disk to disk data backup The cost of disk remains the most significant obstacle when companies consider migrating from disk to tape Regardless how you look at it disk still costs more than tape Disk vendors use sophisticated TCO and ROI tools to help convince customers that disk will hardly cost more than tape but with so much added benefits that you will forget about the cost difference Likewise tape vendors use equally convincing tools to prove the exact opposite In fact a recent study by the Clipper Group shows that the five year TCO using SATA disk instead of tape for long term storage can cost up to 23 times more Part of this higher TCO is not only driven by the typically higher cost of acquisition of disk storage capital cost but also by the significantly higher amount of energy required to keep the disk spinning and for the air conditioning required to cool the space where the array is installed operational cost Essentially this shows you that if you want to migrate to disk based backups purely for financial reasons this probably isn t a good idea Data deduplication is now leveraged heavily to increase the capacity of a disk array and this significantly reduces its cost of ownership However not all data will benefit from deduplication data types such as images encrypted data and compressed files typically benefit very little and sometimes not at all from deduplication Anyone considering migrating to disk based backups because deduplication makes it a better competitor against tape should first thoroughly understand the type of data they will store on these devices to avoid costly disappointments Although we should never bring up archives when discussing backups because they are two very different things archives should be seriously considered before you toss out your tape subsystem With tapes capable of holding 800 GB or 1 6 TB with an average of 2 1 compression space becomes the next

    Original URL path: http://searchstorage.techtarget.com.au/news/2240021802/Making-the-move-from-tape-backup-to-disk-backup (2016-02-10)
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  • Tape vs. disk: how to calculate the cheapest option
    overlooked Tape has historically been approximately eight or 10 times less expensive than disk storage to acquire and operate With the recent deployments of high capacity low cost drives such as SATA the cost benefit ratios are now closer to 4 1 in favor of tape However these hard cost calculations ignore the business improvements available by using disk including regulatory compliance issues faster time to recovery and other aspects These hidden aspects have real value but must be quantified in order to determine the appropriate place to store backup data Accounting costs Acquisition costs Capex The capital or acquisition costs are the easiest to calculate and are often the only costs used for comparisons due to the very little work required However capital acquisition costs typically represent only 20 to 40 of the true cost of acquiring and operating equipment Operational costs Opex In a cost model at least three operational costs should be considered Human costs to operate the equipment Warranty costs for the equipment Power and cooling costs Creating a cost model With the information gathered it s possible to put these values into a simple spreadsheet to calculate the costs The spreadsheet should capture the major aspects which include the capital and operational costs including power cooling and maintenance A typical operational time frame may be picked such as three years to five years Provided below is a high level summary of a detailed cost comparison analysis This analysis assumes 1 PB of storage and compares a tape only approach to a disk or VTL only approach for backup A typical midrange tape library capable of supporting 1 000 cartridges was selected and includes 24 LTO 4 tape drives and 800 cartridges For the disk subsystem a typical midrange system was chosen and includes the use of 1 TB SATA drives in a RAID 6 configuration The cost of disk vs tape 1 PB for five years Tape Disk Acquisition costs US407 000 US1 620 000 Operational costs US205 500 US573 516 Warranty Total five years US184 200 US306 000 Total power and cooling cost US21 300 US267 516 Total Cost US612 500 US2 193 516 It s obvious that there are dramatic cost differences for using a pure disk or a pure tape architecture for storing backup data However most environments will use a variety of solutions for different applications For business applications that stipulate a RPO of less than one day or a RTO of less than one hour it s impractical if not impossible to meet these levels using tape as the primary means for storing recovery data A combination of approaches is typically warranted with some applications requiring remote replication others being satisfied by a VTL and tape with disk to disk to tape solution and still other applications satisfied with local backup to tape and off site vaulting About the author Russ Fellows is a Senior Analyst with Evaluator Group He is responsible for leading research and analysis of product and

    Original URL path: http://searchstorage.techtarget.com.au/news/2240021813/Tape-vs-disk-how-to-calculate-the-cheapest-option (2016-02-10)
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  • Vista Service Pack One to boost new drive type
    Director for Asia Pacific Sales and Marketing Seagate already offers these hybrid drives in its Momentus range of 2 5 laptop drives but Mr Teh says they currently sell in only small volumes due in part to the 100 price premium they attract The update to Vista however will make the drives more useful as Vista will be able to take advantage of the on board flash to achieve outcomes such as faster startup times by storing the files required in flash to take advantage of its faster access speeds Once a PC is running Teh says the flash memory will serve as a cache The Momentus 5400 Seagate s current hybrid flagship offers 256MB of flash alongside conventional capacities up to 160GB Teh says he expects hybrid drives will come to occupy 10 of the overall disk market by 2012 lagging completely solid state drives which expects to capture 12 of a total market for more than 700 million drives a year Hybrid drives market share will he added come largely from blade servers which will appreciate the benefits they offer The technology will also make its way into mainstream laptop drives where by 2012 it will attract no price premium and will therefore become one of the factors that keeps conventional disks prevalence high Teh visiting Sydney yesterday said Seagate will this year announce its solid state drive offerings but would not foreshadow the timing of any announcement Dig Deeper on Disk based backup All News Problem Solve Western Digital undisputed King of disks vanquishing Seagate after Hitachi GST buy Mean time between failure vs load unload cycles How to use Symantec NetBackup OpenStorage for disk to disk backup and recovery Importer dumps tape for Acronis backup Load More View All Western Digital undisputed King of disks vanquishing Seagate after Hitachi GST buy How to use Symantec NetBackup OpenStorage for disk to disk backup and recovery Importer dumps tape for Acronis backup Law firm ditches tape for the cloud Load More View All News Mean time between failure vs load unload cycles Pros and cons of disk to disk backup View All Problem solve ADS BY GOOGLE Latest TechTarget resources CIO AU Security AU Data Backup Disaster Recovery SMB Storage Storage Channel Search CIO com au Internet of Things Food safety apps set to emerge Food safety could emerge as a key application for the Internet of Things in the coming months providing real time visibility in Cloud security culture a building block for today s businesses As organizations today move more data to the cloud it s important to cultivate a cloud security culture and enlist a CISO a new How to do an advanced data analytics project on the cheap Delivering an advanced data analytics project to the business can cost a fortune But with some imagination CIOs can do it for Search Security com au Weigh the benefits risks of going mobile in the enterprise Smartphone and tablet use in the enterprise can help boost

    Original URL path: http://searchstorage.techtarget.com.au/news/2240019174/Vista-Service-Pack-One-to-boost-new-drive-type (2016-02-10)
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  • WA Newspapers upgrades to virtual tape
    labelling the large number of cartridges we were using as well as physically transporting weekly backup tapes from the primary site to the DR site he said Eventually the backup load grew to such an extent that the IT department found it was nearing the limits of its backup storage capacity Adding to the problem was the fact that managing these backups frequently took longer than the time allotted Reseller ComputerCORP recommended Quantum s DX5000 virtual tape library VTL to solve this problem During the selection process it became quite clear that the Quantum solution was the obvious choice to solve our storage issues said Cowell Key factors in our decision were the ability to increase the capacity and operational efficiency of our system completing backups in the allotted hours whilst also reducing management overhead and simplifying our backup processes Naturally cost is always a factor but in this case it wasn t the most important issue for us to consider So the reasonable pricing of the DX5000 was an added bonus WA Newspapers uses Quantum s DX5000 VTL for its full nightly backups and Symantec Backup Exec software to duplicate the job and move the data to the Quantum PX502 tape library 500 m away in the administration building The tape capacity has increased from 160 to 800 GB using DLT S4 tape technology providing a significantly higher storage capacity and eliminating the need to physically change 30 to 40 tapes saving time and labour We are now achieving backup speeds of up to 20 60 MBps which gives us three to four hours breathing space each night Cowell said We have almost tripled the speed of database backups which means we can focus staff resources in other areas The implementation of the Quantum DX5000 and PX502 was implemented over a three month period within the scheduled timeline and budget Effectively West Australian Newspapers replaced four servers with the Quantum solution by running Symantec Backup Exec to the DX5000 Replication of backup data to the PX502 tape library is done via fibre channel between sites Early arrivals into the office conduct a morning server check and a backup check which includes changing tapes This process is now quicker as there is now only one server to check and no cartridge replacements required This saves approximately five to seven hours per week in labour The cost savings have been good Because we keep our month end data offsite the previous system meant we chalked up a rather hefty bill per month on backup tapes alone said Cowell With the new Quantum solution this is no longer necessary and has led to a 60 savings on tape purchases Our restore time has been reduced significantly because we no longer have to load tapes which means it s basically instantaneous he said Plus we have a full month of data easily accessible on disk which we can restore immediately if necessary If we do need to restore older data we have the

    Original URL path: http://searchstorage.techtarget.com.au/news/2240019177/WA-Newspapers-upgrades-to-virtual-tape (2016-02-10)
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  • How to buy continuous data protection
    specifically for Microsoft Exchange It s important to understand the applications that CDP will protect and then select a suitable CDP product Consider software vs hardware deployment CDP appliances such as Revivio s CPS 1200 are basically CDP servers with software and storage that are packaged for quick deployment In most cases CDP is purchased as software that is installed on an available server in the enterprise using the server s storage or other storage in the data center a k a host based Both approaches will generally yield the same result However software based CDP is less expensive to acquire but installations often require more time and technical expertise than hardware based appliances Remember that CDP may require anywhere from 5 to 40 more space for journal storage so an application with 100 terabytes TB of storage may need another 5 TB to 40 TB for CDP journaling This may require a storage upgrade to provide adequate storage for the CDP platform Evaluate the impact of CDP on the production network Data must be passed from the application s to the CDP product and this additional traffic will demand some amount of network bandwidth This can sometimes adversely affect network performance Performance is generally influenced more with in band CDP products that actually sit in the data stream potentially forming a bottleneck to network traffic Out of band CDP products typically impose fewer traffic problems but rely instead on agents that can complicate application server configurations and maintenance Evaluate any CDP product in advance to determine its impact on your service levels Consider security issues with CDP Many CDP platforms allow users to recover lost or corrupted files themselves While this can save substantial time and trouble for the storage administrator it does raise a serious question of data security Before implementing a CDP product understand the security issues involved in data access and restoration Understand how recoveries are authorized and secured to prevent theft or malicious abuse CDP is not a replacement backup technology Analysts agree that CDP addresses a specific data protection need and should be considered as part of an overall data protection strategy CDP should not replace established backup technologies like snapshots or tape backup and it is typically used in conjunction with those conventional tools The CDP product specifications page in this chapter covers the following products Asempra Technologies Inc Business Continuity Server BCS Atempo Inc LiveBackup Atempo Inc LiveServ for Microsoft Exchange Availl Inc Availl Continuous Backup CA XOsoft WANSync FilesX Inc XpressRestore for Mission Critical Applications IBM Tivoli Continuous Data Protection for Files Mendocino Software InfiniView software Mendocino Software RecoveryONE Microsoft Corp Data Protection Manager 2006 Mimosa Systems Inc NearPoint for Microsoft Exchange Server Revivio Inc Continuous Protection System 1200 Symantec Corp Backup Exec Continuous Protection Server Symantec Corp Backup Exec Desktop and Laptop Option DLO TimeSpring Software Corp TimeData Continuous Data Protection Software Dig Deeper on Disk based backup All News Problem Solve Western Digital undisputed King of disks vanquishing Seagate

    Original URL path: http://searchstorage.techtarget.com.au/news/2240021814/How-to-buy-continuous-data-protection (2016-02-10)
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  • Queensland school recovers in real time
    school or company in Australia focusing on the backup process when what is critical is the recovery process There is only one reason anyone backs up data that is to be able to restore it at some stage in the future Traditional backup products focus on the backup process not on recovery At our annual Share IT conference StorageCraft presented Real Time Recovery and their ShadowProtect solution At first I was reluctant to believe that you could rebuild a Windows server in a couple of minutes but it was the fact of never losing more than 15 minutes of data or emails that really excited me After testing ShadowProtect I was exceptionally impressed by the functionality and ease of use of the solution and have since deployed it across all my Windows servers Capps said As a State school our budgets are very limited and we have to watch every dollar We migrated to ShadowProtect for less than the annual maintenance renewal on our existing backup product Now that is value for money especially when you consider that if we had renewed the maintenance on our existing backup product we would still have the same problems next year as we had this year Capps recommends that all schools re evaluate their backup product StorageCraft ShadowProtect is an outstanding solution and with local support based in Australia I would have no hesitation in recommending it to any school or organisation to solve their backup and disaster recovery problems Dig Deeper on Disk based backup All News Problem Solve Western Digital undisputed King of disks vanquishing Seagate after Hitachi GST buy Mean time between failure vs load unload cycles How to use Symantec NetBackup OpenStorage for disk to disk backup and recovery Importer dumps tape for Acronis backup Load More View All Western Digital undisputed King of disks vanquishing Seagate after Hitachi GST buy How to use Symantec NetBackup OpenStorage for disk to disk backup and recovery Importer dumps tape for Acronis backup Law firm ditches tape for the cloud Load More View All News Mean time between failure vs load unload cycles Pros and cons of disk to disk backup View All Problem solve ADS BY GOOGLE Latest TechTarget resources CIO AU Security AU Data Backup Disaster Recovery SMB Storage Storage Channel Search CIO com au Internet of Things Food safety apps set to emerge Food safety could emerge as a key application for the Internet of Things in the coming months providing real time visibility in Cloud security culture a building block for today s businesses As organizations today move more data to the cloud it s important to cultivate a cloud security culture and enlist a CISO a new How to do an advanced data analytics project on the cheap Delivering an advanced data analytics project to the business can cost a fortune But with some imagination CIOs can do it for Search Security com au Weigh the benefits risks of going mobile in the enterprise Smartphone and tablet

    Original URL path: http://searchstorage.techtarget.com.au/news/2240019178/Queensland-school-recovers-in-real-time (2016-02-10)
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  • LTO 5: Fast, vast but still the past?
    advantage of it but most could not so we reduced the growth from doubling speed in each generation to a 50 increase Nonetheless IBM s Derrett believes that businesses need to start thinking about how to take advantage of LTO 5 now and need to ensure their ponderings go all the way to the application Business needs to think about what to change he advises It could be backup procedure or the software they use If you use fairly simplistic software you may need new software with drivers for LTO5 But you might also need to look at your network because if you suddenly put in LT05 and have more data can the switches cope The faithful switch you have hand for years might need a bit of an upgrade Derrett also believes that would be LTO 5 users will need to think hard about how they back up before they move to LTO 5 lest the extra capacity be wasted In order to get to benefits of the increased speed and capacity you need to look at your backup processes because using 10 of a three terabyte tape will not mean a great benefit You might be better off staying with an older technology because if you just cut across to the new Ultrium cartridges and put a small amount of data on it you will end up with a small benefit Chris Holloway Chief Technology Officer at Spectrum Data also says LTO 5 may struggle to find users LTO 5 does have capacity advantage he says But in terms of client readiness they are holding steadfast with current technology Existing customers using LTO 3 or 4 are quite happy There s no sudden movement towards taking up LTO 5 Indeed Holloway says Spectrum s clients who typically come to the company to move data from old tape and disk to more modern formats are moving away from tape Virtual tape libraries are becoming a lot more acceptable he says We see VTL being embraced more by our clients and that has impacted tape We used to move a million dollars in tape each year but we have seen that fall 25 or 30 a year as VTL becomes more popular The environmental footprint of disk decreasing helps as well and this will impact uptake of LTO 5 he adds LTO consortium representatives Bruce Master and Tom Hammond counter that the new capabilities of LTO 5 are designed to ensure that tape remains a viable archival medium capable of catching up with the quantities of data being created and stored on disk If an organisation uses 50TB of disk they want a single tape library to cope with that the pair said There is now a certain set of customers in the mid to upper range who need faster access to the data In those cases we see them implementing disk or disk inside a VTL then moving to tape because they need to retain data for the long

    Original URL path: http://searchstorage.techtarget.com.au/news/2240019182/LTO-5-Fast-vast-but-still-the-past (2016-02-10)
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  • Tape backup overview
    width Linear tape simply positions a stationary head that runs along the tape length There are numerous tape formats in service today that leverage these two approaches and the choice of tape drive should include a consideration of capacity need performance speed media cost and technological longevity Advanced intelligent tape AIT This helical head technology was designed to record computer data on 8mm tape cartridges AIT cartridges can support up to 400 GB with compression and drives can transfer data up to 48 Mbps also with compression Digital data storage DDS This helical head technology was designed to record computer data on 4mm digital audio tape DAT cartridges There are five generations of DDS format capable of saving 2 GB 8 GB 24 GB or 36 GB or 72 GB to a DAT cartridge Fairly small storage capacities make DDS technology better suited to small and mid sized businesses Digital linear tape DLT This linear head technology records data along a series of 128 or 1280 data tracks DLZ1 compression helps to fit more data on the tape and increase the effective read write speed Ordinary DLT cartridges can hold up to 160 GB of uncompressed data though SuperDLT DLT S cartridges can support to 800 GB of uncompressed data DLT drives can run up to 60 Mbps Linear Tape Open LTO This open standard linear tape technology has evolved through several generations currently supporting enterprise class storage capacities to 400 GB of uncompressed data with transfer rates of 80 Mbps up to 160 Mbps compressed Upcoming iterations of the LTO standard promise 1 6 TB capacities at 240 Mbps 3 2 TB capacities at 360 Mbps and 6 4 TB capacities at 540 Mbps all using compression Travan This enterprise class helical tape format was standardized by the Quarter Inch Cartridge QIC Consortium and offers several iterations over its life The latest capacities include 20 GB and 40 GB compressed storage capacities Storage Learning On The Go Download this overview and listen on your iPod or laptop Unlike hard disks and optical drives tape drives require routine maintenance Tape media comes into contact with the drive s read write heads so the heads must be cleaned periodically to prevent accumulations of residual magnetic material from causing read write problems A head cleaning cartridge will handle this task though personnel must be present to run the process unless the tape is embedded within an automation system However maintenance issues can be problematic for remote offices where personnel have little if any IT expertise Ignored maintenance can eventually result in backup problems Remote tape systems should receive particular attention from storage administrators to ensure that any required procedures are performed in a timely fashion Tape libraries Of course a tape drive can only hold one tape at a time and a single tape is unlikely to hold the complete backup of an entire organization There are generally two options when more tape storage capacity is required manually insert a new tape

    Original URL path: http://searchstorage.techtarget.com.au/news/2240021826/Tape-backup-overview (2016-02-10)
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