CTERA Adds Data Protection to Linux File Systems

“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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