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NetApp AltaVault Cloud Integrated Storage Administration Guide
49
Beta Draft
Configuring SnapMirror
Configuring storage settings
2.
To view the list of Snapshots for a share, select a share and review the Snapshot information:
To delete SnapMirror shares and Snapshots on AltaVault
1.
To remove a share or Snapshot, select the share or Snapshot and click
Remove Selected.
Snapshots can be deleted on the AltaVault through ONTAP SnapMirror policies or SnapCenter policies, or by
manual deletion on AltaVault. When a share is deleted, Snapshots belonging to that share are also deleted.
AltaVault reclamation will recover the space occupied by the deleted Snapshot or Share asynchronously, and
Share size may not immediately reflect available space from the operation.
Note:
You cannot delete the latest Snapshot. Also, a Snapshot cannot be deleted while a restore is in progress.
Enabling long-term retention
AltaVault supports up to 500 SnapMirror shares in one of two modes: short-term retention (default) or long-term
retention. For short-term retention, each share supports up to 251 Snapshots, and Snapshot retention is dependent upon
the retention policy set up in ONTAP. For example, suppose a share has a two-tier retention policy supporting 50 hourly
and 100 daily Snapshots. In this case, when the count of hourly Snapshots exceeds 50 or the daily count exceeds 100,
the oldest snapshot of the respective tier is deleted.
For long-term retention, each share supports up to a maximum of 3700 Snapshots, which is equivalent to 10 years
worth of daily Snapshots. Long-term retention allows AltaVault to continue storing Snapshots until it reaches the
maximum. If a share exceeds 3700 Snapshots, AltaVault begins deleting the oldest Snapshot copies to make room for
new ones.
When long-term retention is turned off (disabled), AltaVault reverts to using the retention policy set up in ONTAP,
which supports a maximum 251 Snapshots per share. If there are large numbers of Snapshots (more than 251) when
long-term retention is turned off, the number of snapshots will be reduced to match the count set in the retention policy.
The retention method used for Snapshot retention applies to all SnapMirror shares created on the AltaVault.
To enable long-term retention mode
1.
Under Long Term Retention, click
Enable
.
Field
Description
Name
List Snapshot for a share. Snapshot backups can be triggered in ONTAP through
SnapMirror policies, by explicitly running the ONTAP update command, or through
SnapCenter software.
UUID
Lists the unique identifier associated with each Snapshot copy. The UUID value is
generated by ONTAP.
Created
Displays the date and time when the Snapshot was created in ONTAP.
Size
Specifies the size of a Snapshot.
During the lifetime of a share, there is only one baseline Snapshot. Any Snapshot after
the baseline is always incremental. Baseline transfer can take a long time to complete
depending on the size of the Snapshot.
During incremental Snapshot backups, only the changed blocks between two Snapshots
are transferred.
Status
Identifies the status of Snapshot replication to the cloud. Replication status can be either
Completed or Pending.
Содержание AltaVault AVA400
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