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SnapServer / GuardianOS 7.6 Administrator’s Guide 7 - Other Storage Options
These options are available in the Snapshots section of the Web Management Interface:
NOTE: It is recommended that snapshots be taken when the system is idle or under low data traffic
to minimize conflicts.
Clicking
Refresh
updates the data shown. This is helpful when waiting for a snapshot to
complete.
When single snapshots are originally created or while recurring snapshots are active, a
refresh icon ( ) is displayed to the right on the tab bar. It indicates that the snapshot data in
the table is being refreshed every 5 minutes.
Clicking
Close
returns you to the
Storage
home page.
NOTE: The presence of one or more snapshots on a volume (Traditional RAID) or storage pool
(DynamicRAID) usually has minimal performance impact, but may impact write performance
when frequently overwriting file data. Additional snapshots taken of the same volume or
storage pool do not have additional impact; in other words, the write performance impact of
one snapshot on a volume is the same as the impact of 100 snapshots on the same volume.
Creating Snapshots
Creating a snapshot involves first defining the snapshot and then scheduling the snapshot.
For regular data backup purposes, create a recurring snapshot. A recurring snapshot schedule
works like a log file rotation, where a certain number of recent snapshots are automatically
generated and retained as long as possible, after which the oldest snapshot is discarded. You
can also create individual, one-time-only snapshots as needed.
NOTE: If you have created a new volume or have numerous existing snapshots, make sure you have
enough space allocated in the snapshot space; otherwise, you will not be able to create the
snapshot.
Action Procedure
Create a New Snapshot Click Create Snapshot. The process involves first defining snapshot
parameters and then scheduling when and how often to run the
snapshot.
Do not take more snapshots than your system can store, or more than
250 snapshots total. Under normal circumstances, between nine and
ten snapshots are sufficient to safely back up any system.
Edit a Snapshot Schedule Click Snapshot Schedules and then click the snapshot name. You can
then modify all snapshot parameters.
Adjust Snapshot Space NOTE: Traditional RAID only.
Click Snapshot Space and then click the RAID set name for the
snapshot space you want to adjust. You can adjust the amount of
space allotted for snapshots on each RAID set or RAID group.
Edit and Delete Click the snapshot’s name to open the Snapshot Properties page. You
can edit the snapshot’s name and duration, or delete the snapshot.
Roll Back a Snapshot NOTE: Traditional RAID only.
Click the snapshot’s name to open the Snapshot Properties page. You
can roll back the snapshot to a volume
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