User manual

iSCSI GbE to SAS/SATA II RAID Subsystem
104
User Manual
1. There are two methods to clean all snapshots. In “/ Volume configuration /
Virtual disk”, move the mouse pointer to the gray button next to the VD
number; click “Cleanup snapshot”. Or in “/ Volume configuration /
Snapshot”, click “Cleanup”.
2. “Cleanup snapshot” will delete all snapshots related to the VD and release
snapshot space.
Snapshot has some constraints such as the following:
1. Minimum RAM size for enabling snapshot is 1GB.
2. For performance and future rollback, system saves snapshot with names in
sequences. For example, three snapshots has been taken and named
“SnapVD-01”(first), “SnapVD-02” and “SnapVD-03”(last). When deleting
“SnapVD-02”, both of “SnapVD-02” and “SnapVD-03” will be deleted because
“SnapVD-03” is related to “SnapVD-02”.
3. For resource management, maximum number of snapshots in system is 32.
4. If the snapshot space is full, system will send a warning message of space full
and the new taken snapshot will replace the oldest snapshot in rotational
sequence by executing auto snapshot, but new snapshot cannot be taken by
manual because system does not know which snapshot VDs can be deleted.