StorView’s Snapshot software has
been de¬signed to give the user considerable flexibility when
setting up and performing snapshot and snapback operations. A
snapshot allows the user to create a point-in-time image of a
logical drive that contains exactly the same data at the point the
Snapshot was taken. Snapback allows the user to restore the logical
drive to that point in time. For Windows-based systems, it is
recommended to use the VSS (Volume Shadow Copy Service) to take and
manage snapshots. Although you will use VSS to take the snapshots,
StorView will still be used to create arrays, create logical
drives, create ODAs, enable Snapshot and perform Snapback
operations. Mac OS and Unix-based systems will use the StorView
snapshot functionality for their implementation of Snapshot. This
includes creating arrays, logi¬cal drives, ODAs, and enabling
and managing the Snapshot software, as well as performing Snapback
op¬erations. To prevent slowing down the full SAN when using
Snapshot, the volume on which one would take a snapshot a logical
drive has to provide equal or greater read/write speed than the
actual logical drive.
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