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CTERA Adds Data Protection to Linux File Systems

Jun 09, 2010, 12:02 (0 Talkback[s])
(Other stories by Paul Shread)

"Snapshots record the state of the file system at any given moment, creating a point-in-time copy of the data that can be used to restore previous versions of files. CTERA says the offering is the first solution for Linux that offers file-system level snapshots that make efficient use of disk space, store snapshots reliably and maintain low performance overhead.

"CTERA marketing vice president Rani Osnat said current LVM snapshot capabilities require that storage space be allocated in advance, creating 'overhead that a lot of people don't find acceptable.'

"Next3 doesn't require pre-allocation of storage space for snapshots, instead allocating space as it is needed. CTERA says the snapshots are also space efficient, as unchanged data is shared among the file system and its snapshots, and the system can retain large numbers of snapshots without performance degradation. Snapshots can be created and deleted quickly, and cleanup is performed automatically after snapshot deletion so storage space can be quickly reclaimed."

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