Snapshots and Clones
LICENSE NOTICE: Cloning may be evaluated free of charge, but the feature requires that
an independent license be purchased separately for use in production. After the evaluation
period, this feature must either be licensed or deactivated. Oracle reserves the right to audit for
licensing compliance at any time. For details, refer to the "Oracle Software License Agreement
("SLA") and Entitlement for Hardware Systems with Integrated Software Options."
Using snapshots and clones, you can make point-in-time copies of a share or project. These
copies can be useful as backups or as different working versions.
A snapshot is a read-only copy of a filesystem, LUN, or project. Taking a project snapshot is
equivalent to snapshotting all of the shares in the project. A snapshot takes up no additional
space when it is first created, but as the active share changes, the snapshot takes up additional
space, with a maximum equivalent to the size of the share at the time the snapshot was taken.
A clone is a writable copy of a filesystem or LUN snapshot and can be treated as an
independent share. Clones of projects are not supported. Like a snapshot, a clone consumes
no additional space when it is first created, but as new data is written to the clone, the space
required for the changes are associated with the clone.
You can take snapshots manually, or you can set a schedule so that snapshots are taken
automatically every half-hour, hour, day, week, or month. Some snapshots are taken by the
appliance automatically during replication updates; these will appear on the snapshot page with
.ndmp and .rr in their names.
For information about snapshot space management, see the following:
“Snapshot Space Management” on page 439
To take manual snapshots or schedule automatic snapshots of projects or shares, use the
following tasks:
■
“Taking a Snapshot (BUI)” on page 440
■
“Taking a Snapshot (CLI)” on page 441
■
“Scheduling Snapshots (BUI)” on page 442
■
“Scheduling Snapshots (CLI)” on page 443
■
“Setting a Scheduled Snapshot Label (BUI)” on page 445
Snapshots and Clones 437
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