QNAP

QTS 5.0.x

Reverting a LUN Using a Remote Snapshot

Reverting restores a shared folder or LUN to the state at which the snapshot was taken. Restoring data using snapshot revert is faster than restoring individual files and folders.

Warning:
  • While reverting, ensure that data is not being accessed on the LUN. The safest way to do this is to disconnect all iSCSI initiators. Accessing the LUN during a snapshot revert might result in data loss.

  • Restoration time depends on the amount of data being restored and the connection speed between the two NAS devices.

  1. Go to Storage & Snapshots > Storage > Storage/Snapshots.
  2. Select a block-based LUN.
    Important:

    The LUN must have at least one snapshot.

  3. Click Snapshot, and then select Snapshot Manager.

    The Snapshot Manager window opens.

  4. Under Select snapshot location, select a remote NAS.
  5. Select a snapshot.
  6. Click Revert LUN Snapshot.
    Warning:

    All changes made after the snapshot was taken will be deleted.

  7. Optional: Configure the following settings.

    Setting

    Description

    Take a new snapshot before reverting

    QTS takes a snapshot before starting the revert. This ensures that changes made to data since the snapshot was taken are not permanently lost.

    Enable encryption during transfer

    QTS encrypts the snapshot before sending it for additional security.

    Re-map LUN to the same iSCSI target after revert

    If enabled, QTS automatically remaps the LUN to its current target after reverting. If disabled, you must manually remap the LUN after reverting.

    Warning:

    If the network connection is interrupted or if the storage configuration of the source or destination NAS changes while reverting, the LUN might become inaccessible. If this happens, revert the LUN again using a local or remote snapshot.

  8. Click Remote Revert.

    The Remote Revert Warning window opens.

  9. Enter the QTS administrator password.
  10. Click OK.

QTS unmaps the LUN from its iSCSI target. The status of the LUN changes to Reverting.