Dell EqualLogic PS6210XS EqualLogic Group Manager Administrator s Guide PS Ser - Page 232
About Deleting NAS Container Snapshots, Restore a NAS Container from a Snapshot
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3. In the Name field, type a snapshot name: • A snapshot name can contain up to 229 characters, including letters, numbers, and underscores. Fewer characters are accepted for this field if you type the value as a Unicode character string, which takes up a variable number of bytes, depending on the specific character. • If you do not assign a snapshot name, the NAS cluster generates a name automatically, based on the NAS container name and the timestamp. 4. Click OK. The snapshot appears (identified by its timestamp) when you expand the NAS container name in the far-left panel. About Deleting NAS Container Snapshots You can manually delete a snapshot when it is no longer needed. The NAS cluster automatically deletes one or more of the oldest snapshots for a NAS container when: • The number of snapshots created from a schedule exceeds the max-keep limit. • A NAS container data deletion or write causes the in-use snapshot space to be larger than the size of the snapshot reserve. Select the Enable data reduction checkbox to activate the Modify policy button. Enabling data reduction permanently removes the snapshot reserve functionality from the NAS container. In addition, the NAS cluster also automatically deletes NAS container snapshots when: • You delete a NAS container. All the snapshots configured for that NAS container are also deleted. • You restore a NAS container from a snapshot. All the snapshots created after the snapshot that was used to restore the NAS container are deleted. Delete a NAS Container Snapshot To delete a NAS container snapshot: 1. Click NAS and expand NAS Cluster. 2. Expand Local Containers, then select and expand a NAS container name. 3. Select the snapshot that you want to delete. 4. In the Activities panel, click Delete snapshot. 5. Click Yes to confirm that you want to delete the snapshot. Restore a NAS Container from a Snapshot To restore a NAS container from a snapshot: 1. Click NAS and expand NAS Cluster. 2. Expand Local Containers and select a NAS container. 3. Click Restore NAS container. 4. Select the snapshot to restore and click OK. 5. Click Yes to confirm that you want to restore the NAS container from the snapshot. After the restore operation completes, the NAS cluster deletes any snapshots that were created after the snapshot that was used to restore the NAS container. Snapshots that were created before the snapshot that was used for the restoration are not affected. NOTE: When you restore a NAS container from a snapshot, any currently mounted NFS exports will produce a Stale NFS file handle error message. You must unmount and then remount the NFS exports. Retrieve a File from a NAS Container Snapshot 1. Locate the .snapshot/[snapshot_name] directory in the affected NFS export or SMB share. 2. Locate the file in the snapshot directory. 3. Copy the file to the new location. 232 About Backing Up and Protecting Your Data