User manual

Snapshot has some constraints:
1. Minimum RAM size of enabling snapshot is 512MB.
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 is 32.
4. If the snapshot space is full, system will send a warning message that
the space is full and the new taken snapshot will replace the oldest
snapshot in rotational sequence by executing auto snapshot, but new
snapshot can not be taken m anually because system does not know
which snapshot VDs can be deleted.
4.4.2 Auto snapshot
The snapshot copies can be taken manually or be schedule either hourly or daily.
Follow the steps below.
1. There are two methods to set auto snapshot. In “/ Volume
configuration / Virtual disk”, move cursor to the gray button next to
the VD number; click “Auto snapshot”. Or in “/ Volume
configuration / Snapshot”, click “ ”.
2. The auto snapshot can be set monthly, weekly, daily, or hourly.
3. Done. It will take snapshots automatically.
Figure 4.4.2.1
(Figure 4.4.2.1: It will take snapshots every month, and keep the last 32 snapshot copies.)
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