Recovering and demoting a file system

Replication and Disaster Recovery Administration Guide for Hitachi NAS Platform

Version
15.1.x
Audience
anonymous
Part Number
MK-92HNAS009-29
  1. From the File System Versions page, select the "Recover File System To Version" option and then click "Demote the file system to an Object Replication Target (and mount as an Object Replication Target)" to display the Demote File System To Object Replication Target page.
  2. Specify recovery options.
    Note: After you have selected all the options on this page, it will take a few minutes for the server to roll back the file system and remove all the access points. You can monitor the server's progress on the File System Recovery Progress" page.
    Field/Item Description
    File System Details Displays the name of the EVS hosting the file system, and the currently selected file system that can be recovered from the snapshots listed in the Versions section.
    EVS/File System Displays the name of the currently selected EVS and file system.
    Status Displays the current mount status of the file system. The file system status might be unmounted, mounted, or mounted as a replication target.
    Object Replication Details For Latest Version If the file system is a replication target, this section displays the status of the most recent replication and information about the replication source. If the currently selected file system is not a replication target, or the replication information cannot be retrieved (if the source server is not known to the replication process), the Source File System, Source Server, and Source Server fields are not displayed.
    Status If the currently selected file system is a replication target, this field displays a status indicator and a message about the most recent replication. If the file system is not a replication target, the status indicator is greyed out and the message "Not an object replication target" is displayed.

    The status indicator is green if a replication is currently running, or if the most recent object replication completed successfully.

    If a replication associated with this file system has not yet run, the light is grayed out, and the message reads, "Not an object replication target".

    Source File System If the currently selected file system is a replication target, this field displays the name of the source EVS and file system.

    If the currently selected file system is not a replication target, this field is not displayed.

    Source Server If the currently selected file system is a replication target, this field displays the name of the server hosting the EVS/replication source file system.

    If the currently selected file system is not a replication target, this field is not displayed.

    Source File System Status If the currently selected file system is a replication target, this field displays the current mount status of the replication source file system. The file system status might be unmounted or mounted.

    If the currently selected file system is not a replication target, this field is not displayed.

    The following steps will be taken This section lists the recovery steps, and allows you to specify recovery options.
    1. Displays the file system to be recovered.
    2. Displays the date and time the snapshot to be used to recover the file system was taken. You can use the drop-down list to select a different snapshot by the date and time the snapshot was taken.

      For the selected snapshot, the name of the corresponding snapshot on the target file system and the name of the snapshot on the source file system are also displayed.

    3. Displays the recovery goal to confirm that the file system you have chosen will be demoted to an object replication target.
    4. Check boxes allow you to specify if you want the access points (SMB shares and NFS exports) of the demoted file system to be removed. Fill the check boxes of the access points you want to remove. Leave the check boxes empty to keep the access points for the demoted file system.
      Note: In general, when demoting a file system as a part of disaster recovery, you should remove both SMB shares and NFS exports.
  3. Click next to display the Demote File System to Object Replication Target Confirmation page.
  4. Verify the file system recovery settings and proceed with the file system recovery.
    • Click back to return to the Demote File System To Object Replication Target page.
    • Click OK to begin the recovery, and display the File System Recovery Report page.
    • Click cancel to return to the File System Versions page.
  5. Monitor the file system recovery.
    Field/Item Description
    File System Details Display the name of the currently selected EVS and file system, along with its status.
    Recovery Details Displays the progress of the current or last run recovery, and status of the recovery.
    Progress Displays the progress of the current or last run recovery, including start and end times.
    Request Summary Displays the recovery options in use, including the name of the snapshot used for rollback and the share/export handling options.
    Recovery Statistics Displays NFS Exports and SMB Shares import statistics.
    abort Stops the active recovery operation.
    View Log Opens the File System Recovery Report Log page.

    Use your browser's back button to return to the previous page, or click abort to abort an active recovery operation.