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HDS Hitches Commvault's CDP

HDS fleshed out its CDP story today, extending its OEM agreement with CommVault and targeting branch offices as part of an ongoing overhaul of its storage portfolio. (See CommVault Adds CDP to HDS, Sun Shifts SAN to HDS, and BlueArc Boosts Performance.)

The vendor, which already resells CommVault's data management products, will now sell its partner's Continuous Data Replicator. HDS will target the software at remote offices in an attempt to tap into users' paranoia about lost data. (See The Personal Side of Tape Loss and Insider: Spend Wisely on Backup.)

HDS, like its rivals NetApp and EMC, has dragged its heels in the area of NAS-based CDP and appears to be still some way from a "full CDP" offering. (See EMC Takes CDP Downmarket and Exanet Dips Toe in CDP Pool.) CommVault's product is a "near-CDP" technology. (See Crowded Data Pool, New Wave of CDP Rolls In, Mendocino Embraces Near-CDP, and Clusters & CDP: Well Matched.)

True CDP, which is offered by the likes of Mendocino, is real-time capture of each block- or file-level write operation, which lets customers go back to any point in time to recover information when data is lost due to a system crash or human error. Near-CDP offers less granular recovery, usually through frequent snapshots. (See Fine Granularities and CDP Report Card.)

NetApp, for its part, acquired CDP technology when it bought Alacritus in 2005 but hasn't yet rolled out a full CDP product, although it does support snapshots on its NAS systems. (See NetApp Annexes Alacritus.)

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