Monday, November 8, 2010

Data deduplication backup Gets a few new twists

Arkeia Software and ExaGrid Systems this week came new approaches data deduplication backup products. Arkeia added what he calls "progressive de-duplication" in its software backup while ExaGrid Systems an algorithm to expand taken applications supported by its disk devices added.

Arkeia launched 9 backup network thanks to data de-duplication technology acquired vendor at the time when he bought Kadena Systems in November dernier.Arkeia have no data de-duplication in previous versions.

Kadena technology uses progressive de-dupe, which differs from that block fixed and variable block deduplication approaches...
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providers use more identification data deduplication.Network Backup 9 is multi-application and creates a window of different depending on the application size is deduping.Il must approach in two stages, first looking for likely with a slight algorithm and then confirming correspondence with a hash matches.Arkeia CEO Bill Evans calls it a sliding window approach and argued that his method is faster than only with the help of a hash.

De-duplication blocks fixed examines the pieces are all the same size and has a rate lower than variable-block deduplication, which examines blocks in different sizes and takes longer to de-dupe compression. " "Progressive de-duplication with a window offers you the best of both worlds," said Evans.

Arekeia also offers a Profiler application to calculate compression rates deduplication by measuring the accurate reports of .the specific data compression' tool is used for planning projects de-duplication.

Arkeia deduplication option will cost $2,000 per server data.It will be available at the beginning of 2011 with the profiling tool due out next month.

Evans said backup network improvements usually come approximately 18 months apart, but version 9 has taken two years to develop because of the integration of Kadena de-duplication. He said that it was important to get right deduplication in this version, because most Arkeia competitors already and considered part of the larger breed backup devices on the spot in the cloud image. This is an ability that arkeia provides added.

"We believe that the battle of Deduplication is not even more," he said. "We wanted a compelling approach de-duplication differentiate on part of our strategy in the long term to have replicated to the nuage.La backups done marché.Il long pole in the tent of this model is deduplication because rare resource is the bandwidth in the cloud."

Analyst, Enterprise Strategy Group Lauren Whitehouse said that arkeia has a twist on an established technology.

"It is difficult to create something completely different," she says. "Arkeia evolves what others have fait.Hachage deduplication and compare are not new.Length fixed- and variable-length are not nouveaux.lorsque you take the best of these approaches and combine them, you can do something better.It takes what is already out and is included and seeks to improve on it.»

Whitehouse said the opportunity for surrebuttal deduped data is an important element Arkeia is still reported missing.

"There is no replication storage storage", she says. "If I don't want to use the band, how can I get the data off site?If I optimize disk, I would like to move to a secondary site and make sure it is optimized.I could use my storage system functionality, but I can having a - it to move in de-duplication thread. »

ExaGrid goes "generic" with DeltaZone data deduplication

ExaGrid presented DeltaZone, a new algorithm deduplication allows customers using a generic bytewise as well as a content-aware byte-level deduplication deduplication.

ExaGrid has always offered content-aware de-dupe for its midrange data backup appareils.La content-aware deduplication EX series scales better and is granted for the individual applications, but ExaGrid VP product marketing said Marc Crespi is less flexible because it limited the applications that the product could support and it took ExaGrid more time to free upgrades and support new applications.

Application-aware deduplication requires that vendor to optimize its software with specific applications, until it supports applications for its clients.ExaGrid backup supports CA ARCserve, CommVault Simpana, IBM Corp. System I platform iSeries (AS400), Hewlett-Packard (HP) Co. Data Protection, Symantec Corp. Backup Exec and NetBackup, Veeam Software, vRangerPro Vizioncore (now Quest Software Inc.) and VMware backup.

"Bytewise methods require more knowledge of the content," said Crespi. "We must do more work to develop applications on the marché.Maintenant you'll see accelerating produit.Nous announcements are going to add backup applications and venture into the archive and nearline use cases.

For those who use now the case excludes primary storage, Crespi said: "We will remain focused on secondary storage – backup, archiving and the row of data," he said. "However, technology DeltaZone promise storage principal.Vous can imagine what it can do this variant storage byte-level main de-duplication.»

ExaGrid clients can have their systems to analyze the data content or said générique.Crespi DeltaZone mode has been tested by a small group of clients since January and is now part of the OS ExaGrid.

Whitehouse said ExaGrid generic mode may cause less disruption for its customers when adding upgrades and new features.

"End users don't want to risk failure once the solution is in place," says. "Scalability for performance and capacity is a key factor in purchasing end users age in their use of that early adopters are OK with a proposal for high-risk/high-reward at the first stage of the adoption of deduplication technologie.alors, today the majority of customers want high reward without risk.»


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