Snapshot - Accusys TShare A16T3-Share User Manual

5.6.6 Snapshot

A snapshot is initialized with a data duplicate from a source to a target. The mirror
snapshot is offered by the ExaSAN RAID controller.
Note
The source and target volume of the snapshot must be identical.
Before setting a snapshot, you need to set the slice in the array. The capacity of each
slice and the number of shots should be in accordance with the space you need.
In the figure above, a snapshot can be created by splitting the source and target after
the background sync is completed. The I/O mirroring is stopped, and the difference is
under tracking in a bitmap table to support fast re-sync.
Create Shot
Create a snapshot of the selected slice. A maximum of 8 shots can be created. Once
all shots have been used, older shots must be deleted before new ones can be taken.
1. Select the Create Shot function from the drop down menu.
2. Select the required shot by clicking on the Shot No. radio button. From the
respective drop down menus, select the source volume and destination volume.
Unavailable shots are grayed out.
3. Check the Confirm box and click OK to take a snapshot.