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Vol. 3 No. 8 October 2004

Cheap SATA Spurs D2D

Two vendors are capitalizing on falling disk prices to create disk-to-disk (D2D) backup appliances that complement--and in some cases replace--traditional tape backup. By combining low-cost serial ATA (SATA) disk arrays with software that greatly reduces the amount of data required to be backed up and then further compresses it, these products can back up a company's data using a fraction of the storage capacity required by a conventional backup process. Going a step further, the compressed backup can be sent over a WAN to another disk appliance at a remote site to produce an off-site backup copy--D2D2D, as it were. The pared down data stream requires comparatively little bandwidth, making it significantly less expensive than conventional remote data replication. Data Domain Inc., Palo Alto, CA, offers the DD200 Restorer, a storage backup and recovery appliance built around SATA disks, plus its proprietary data reduction and compression technology. That software segments the data into chunks as small as 2KB and backs up each ...

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