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Chapter 4: Storage
Creating a Snapshot for a Volume
Network Storage System (NSS) Administrator Guide
Chapter
4
Creating a Snapshot for a Volume
As part of your backup strategy, you can configure the NSS6000 series NAS to capture snapshots
of the data stored on a volume. You can define a snapshot to occur at various frequencies (such as
hourly, daily, weekly, and so on). Individual snapshots are overwritten by the subsequent snapshot
for the same interval. For example, if you set up an hourly snapshot, the 10:00 a.m. snapshot is
replaced by the 11:00 a.m. snapshot (and so on). You can also configure multiple snapshots for the
same volume. For example, you might set up an hourly snapshot, another snapshot to occur every
four hours, and a daily snapshot. Each of these three snapshots is maintained separately and is only
overwritten by the subsequent snapshot of its own frequency type. The snapshot(s) reside in the
reserve area allocated for each snapshot. When a snapshot is created, the end user can access it by
logging into the NSS with their username and password. Each snapshot appears as a copy of the
share accessible by the end user.
The snapshot reserve is the amount of space that you want to allocate on the array to the snapshot.
Once set, this space is not available for other storage use. The recommended amount of a reserve is
generally between 10 to 20% of the total volume size. Note that if the period of time between
snapshots is greater, the amount of the reserve should be greater. Or, if there is a heavy amount of
activity on the volume, set a higher reserve
NOTE:
This feature is only available on NSS6000 series NAS units.
To create a snapshot for a volume:
1. From the
Manager Menu
, click
Storage
Snapshots.
