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Dell PowerFlex 4.5.x Administration Guide

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Restore a file system from a snapshot

The restore operation is used to reconstruct an environment following an event that may have compromised its data.

About this task

You can use the restore operation to replace the contents of a file system storage resource with data from a snapshot that was taken directly from that storage resource. Restoring resets the data in that storage resource to the point in time at which the snapshot was taken. When restoring a file system, the source for the restore must be a snapshot that was taken directly from the storage resource that you are restoring.

Prerequisites

Before restoring a snapshot, it is mandatory to shut down the application and unmount the file system that is running on the production host, and then flush the host cache to prevent data corruption during the restore operation.

Steps

  1. Click File > File Systems and select the check box from the list that you want to restore.
  2. Click Protection > Restore from snapshot.
  3. In the Restore File System from Snapshot panel, select the snapshot to use for the restore operation.
  4. Select whether to create a backup snapshot of the restored object (the option is selected by default).
    NOTE: Because the restore operation replaces the contents of a storage resource, it is recommended to create a snapshot prior to restoring. Creating a backup allows you to revert to the original data.
  5. Click Restore.
    NOTE:You can also restore the file system by selecting the file system snapshot from the Snapshots view. Click File > File Systems, and select the file systems from the list, click View Details, and click More Actions > Restore from Snapshot.

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