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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