APC RAID Subsystem SCSI-SATA II - Manual (Page 76)

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4.4.2 Auto snapshot
The snapshot copies can be taken manually or by schedule such as hourly or
daily. Please follow the procedures.
1. Select “/ Volume config / User data volume”.
2. Create a snapshot space. Please refer to section 4.4.1 for more detail.
3. Click “
” in “Snapshot (GB)” column to set auto snapshot .
4. The auto snapshot can be set at the period of monthly, weekly, daily, or
hourly.
5. 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.)
Tips
Daily snapshot will be taken at every 00:00. Weekly snapshot
will be taken on every Sunday 00:00. Monthly snapshot will be
taken on every first day of month 00:00.