SurfRAID TRITON 16Ni, User Manual, Page: 116 / 248

Snapshot Options:
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Snapshot Numbers: Specifies the total number of snapshots that will be created.
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Snap Ratio (%): This is the ratio in percentage between the snapshot volume and the volume
of origin. This indicates the ratio of the volume size that will be set as the size of the snapshot
volume. For example, if your logical volume is 1GB and the Snap Ratio is 10%, the size of the
snapshot volume that will be created is 128MB, assuming that your PE size is 128MB and
below. The snapshot volume size will always be a multiple of PE size and the smallest
snapshot size is equal to the PE size.
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Overwrite: Selecting this option will automatically delete the oldest snapshot if the total
number of snapshots is already exceeded.
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Mount: When checked, it means that the created scheduled snapshot will be automatically
mounted.
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Reserved/VG Free Size (MB): The left side indicates the total volume space that will be used
for the creation the snapshots. The right side indicates the free space of the volume group
available for use.
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Execute Day:
Specifies whether the scheduled task is to run on the selected day(s).
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Execute time:
Once - Specifies the time of the day when the scheduled task will be taken.
Every - Specifies how often the scheduled task is to be repeated. You can also select the
starting time and the ending time.
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Snapshot Lists:
Mount - Allows you to mount the snapshot volume. All snapshot volumes will be
mounted read-only. By mounting the snapshot volume, the files under this snapshot
volume will become accessible.
Name - This specifies the name of the snapshot volume. If the snapshots are created by
schedule, proNAS will automatically create the snapshot name. The format that will be
used is: the last two digit of the year, followed by the month/date, and then followed by
the hour/min/sec. For example: "060123_171516".
Date - This indicates the date and time when the snapshot was created.
Used Size - This indicates the space used by the snapshot data. The right side is the size
of the snapshot volume. If the used space nearly exceeds the snapshot volume capacity,
it will be set as "Invalid" and will be un-mounted automatically to keep the system
consistent.
3. A confirm message window will be displayed. Select “Yes” to proceed.