Administrator Guide

Restoring Data from a Snapshot
You can restore data in two ways:
• Restore individual les: After a snapshot is created, the FluidFS cluster creates a client-accessible snapshots directory containing a
copy of the les included in the snapshot. Clients can easily restore individual les from a snapshot using copy and paste, without
storage administrator intervention. This method is useful for the day-to-day restore activities of individual les.
• Restore a NAS volume from a snapshot: The storage administrator can restore an entire NAS volume by rolling the state back to the
time of an existing snapshot. This method is useful in the case of an application error or virus attacks.
Snapshots retain the same security style as the active le system. Therefore, even when using snapshots, clients can access only their own
les based on existing permissions. The data available when accessing a specic snapshot is at the level of the specic share and its
subdirectories, ensuring that users cannot access other parts of the le system.
View Available Snapshots
View snaphots available for restoring data.
1 In the Storage view, select a FluidFS cluster.
2 Click the File System tab.
3 In the File System view, expand NAS Volumes and select a NAS volume.
4 In the NAS Volume Status panel, click the Snapshots & Clones tab.
The Snapshots list displays the snapshots.
Restore a NAS Volume From a Snapshot
The storage administrator can restore an entire NAS volume from a snapshot. The restored NAS volume will contain all the NAS volume
data that existed at the time the snapshot was created. Each le in the restored NAS volume will have the properties, such as permission
and time, that existed when you (or a schedule) created the snapshot.
Prerequisites
After you restore a NAS volume from a snapshot:
• The FluidFS cluster deletes any snapshots that were created after the snapshot from which you restored the NAS volume. Snapshots
created before the snapshot from which you restored the NAS volume are not aected.
• Current SMB clients of the NAS volume are automatically disconnected.
• Current NFS clients of the NAS volume receive stale NFS file handle error messages. You must unmount and then remount
the NFS exports.
CAUTION
: The restore operation cannot be undone. Any data created or changed between the time of the snapshot and when
the restore operation is completed is permanently erased. You should restore a NAS volume from a snapshot only if you rst
understand all the repercussions of the restore operation.
Steps
1 In the Storage view, select a FluidFS cluster.
2 Click the File System tab.
3 In the File System view, expand NAS Volumes and select a NAS volume.
4 In the NAS Volume Status panel, click the Snapshots & Clones tab.
5 Select a snapshot and click Restore NAS Volume.
The Restore NAS Volume dialog box opens.
6 Click OK.
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FluidFS Administration