LaCie 131018 - StorView Snapshot - Mac, User Manual

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Using Snapshot
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Chapter 11
Using Snapshot
11.1 Introduction
StorView’s Snapshot feature has been designed 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 when the snapshot was taken.
For more detailed information on snapshot, see ”More on Snapshot” beginning on page 195.
11.2 Enabling Snapshot
This process will enable the Snapshot feature by creating an Overwrite Data Area (ODA) and pairing it
to a logical drive. You may create one ODA for the limited license and up to eight ODA’s with the
maximum license.
Important You cannot enable Snapshot support while an array expansion or array initialization is occurring.
Please wait for the operation to complete before attempting to enable Snapshot.
Important If you intend to make your Snapshots available as logical drives (Virtual LUNs (VLUNs)), you must
SAN LUN Map all logical drives. This includes regular logical drives and the snapshotted logical
drives.
1 Ensure you have an array created to hold the ODA. This should be a different array not comprised of the
logical drives intended to be snapshotted. If not, stop the process and create an array for the ODA. It is
not recommended to use the same array as the logical drive for performance reasons.
2 From the Main screen select a logical drive that will be snapshotted.
Important If this is the first time enabling Snapshot you will have the ability to create one ODA and pairing
it to one logical drive. If you attempt to exceed the Limited Free License, you be prompted to enter
a license key. To obtain a feature license key, contact your sales representative.