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Restore for the NDMP Agent

Table of Contents

Performing a Direct Access Restore

Restoring from a NetApp SnapMirror to Tape (SMTape) Backup

Additional NAS Features

Browse and Restore All Versions of a File

Performing a Restore for the NDMP Agent

Out-of-Place Restore Operations

Performing a Direct Access Restore

Does Not Apply To: Snap restore and NRE restore

Direct Access restores optimize the restore operations by allowing the file server to directly access the backed up data anywhere in the media without having to traverse the media sequentially. By default, all restore operations use the direct access restore process.

If the data to be restored is less than 30-40% of the backup, perform a direct access restore. For example, if you are restoring 25-30 files from a backup that contains 100 files, you can use this option. However, disable this option when you restore a major portion of the backup.

  1. From the CommCell Console, go to Client Computers > client > NDMP.
  2. Right-click the backup set, and then click All Tasks > Browse and Restore.
  3. Click View Content.
  4. Select the data that you want to restore, and then click Recover All Selected.
  5. Click Advanced.

    The Advanced Restore Options dialog box appears.

  6. On the NAS Options tab, click one of the following under Use Direct Access Restore:
    • ON: With this option enabled, restore will search only the specified files within a backup stream and then restore each file separately instead of searching the whole backup stream. It is recommended to use this option when you restore a smaller portion (30-40%) of the backup.
    • OFF: With this option enabled, NDMP server will search the whole backup stream and restore the specified files. It is recommended to use this option when you restore a major portion of the backup.
  7. Click OK.

Restoring from a NetApp SnapMirror to Tape (SMTape) Backup

In-place and out-of-place restores are supported from SMTape backups as described. But these restores have the following limitations:

  • Restore to a file system agent client (file system restore) is not supported.
  • Only full volume destructive restores are supported. No data on the destination volume will be preserved.
  • For NetApp 7-Mode file servers, the destination volume must be put in a restricted state prior to executing the restore.
  • For NetApp C-Mode file servers, the destination volume must be of type DP (data-protection) and must be in a restricted state.
  • After restoring data from an SMTape backup, the destination volume will not be rewritable. To make the destination volume rewritable, you must end the SnapMirror relationship on the destination volume by running the command for Cluster-Mode file servers and for 7-Mode file servers. See NetApp documentation for more information.

Additional NAS Features

The following sections describe the additional features available for different file servers.

Performing a Two-Way Restore

Applies To: Hitachi NAS (BlueArc), Dell EMC VNX / Celerra, Dell EMC VNX / CLARiiON, HPE, Hitachi, Isilon, NetApp, ONStor, Sun

A two-way restore consists of restoring the data to a file server from a locally attached (or SAN-connected) library.

The following restore methods are supported:

  • Restoring to the same location on the file server from where the data was backed up.
  • Restoring to a different volume or folder on the same file server.

Performing a Three-Way Restore

A three-way restore consists of restoring the data to a client that is not directly attached to the backup location. A three-way restore enables more than one file server to share a library, allowing data to be restored to a file server that may not have a locally attached library.

For more information, see Restoring to a Windows or UNIX Client.

Performing a Full Destructive Restore from a Volume Based Backup

Applies To: EMC Celerra

A VBB full destructive restore is an out-of-place restore of a volume based backup. During this process, the last full backup of an entire volume is restored to a raw file system (rawfs) that is created on the file server.

Procedure

  1. Run a volume based backup.
  2. Create a raw file system (rawfs) on the file server.

    Refer to the EMC Celerra documentation for more information.

  3. From the CommCell Console, go to client > NDMP.
  4. Right-click the backup set, and then click All Tasks > Browse and Restore.
  5. Click View Content.
  6. Select the root volume to be restored, and then click Recover All Selected.
  7. Clear the Restore to same folder check box.
  8. In the Specify destination path box, type the destination path.

    For example: /.celerra_vol_10780

    where 10780 matches the volume ID from the nas_fs -i rawfs command for the raw file system.

  9. In the Preserve box, set the value to 0.
  10. Click OK.
  11. After the restore completes, set the volume type as usable.

Restoring from an Image Backup (SnapMirror to Tape)

Applies To: NetApp

SnapMirror to Tape restores from an image backup. In order to perform this type of restore, you must have configured and backed up an image backup set as described in Configuring Image Backups. You can only perform SnapMirror to Tape restores on full image backups. To restore data from an incremental or differential image backup, you must select the latest full image backup job that was performed prior to the incremental or differential backup job that you want to restore. Full restores overwrite all existing content, including all snapshots, on the destination volume.

Procedure

  1. Ensure that the volume you are restoring to is in a restricted mode (unavailable for user level data access).
  2. From the CommCell Console, go to client > NDMP.
  3. Right-click the backup set, and then click All Tasks > Browse and Restore.
  4. Click View Content.
  5. Select the volume to be restored, and then click Recover All Selected.

    Note: You can restore data that was backed up from volumes on either 32-bit or 64-bit aggregates with ONTAP 8.0 to volumes on 64-bit aggregates with ONTAP 8.1 and later. You can restore backup images to volumes with an ONTAP version up to two major consecutive releases from the backup image. For more detailed information, see NetApp documentation.

  6. Clear Restore to same folder, and then enter the destination path.

    Note: The destination volume for a restore must be the root of a volume, for example /vol/vol1, in restricted mode. However, the browse operation for a restore destination does not display volumes in a restricted state. You must enter the path manually in the destination path box. For instructions on setting a volume to restricted mode, see NetApp documentation.

  7. Click OK to start the restore.

Excluding Access Control Lists

Applies To: ONStor, Stratus, and NetApp

The ACLs are restored by default during a restore operation. You can exclude ACLs from the restore.

Procedure

  1. From the CommCell Console, go to Client Computers > client > NDMP.
  2. Right-click the backup set, and then click All Tasks > Browse and Restore.
  3. Click View Content.
  4. Clear the Restore ACLs check box.
  5. Click OK.

Choosing to Overwrite or Not to Overwrite Restored Data

Applies To: Dell, Hitachi NAS (BlueArc), and Dell EMC VNX / Celerra/VNX/VNXE/Unity (All other vendors only support overwriting restores.)

You can choose to overwrite data or not to overwrite data regardless of the destination version.

Procedure

  1. From the CommCell Console, go to Client Computers> client > NDMP.
  2. Right-click the backup set, and then click All Tasks > Browse and Restore.
  3. In the Browse Options dialog box, click View Content.
  4. Select the data that you want to restore, and then click Recover All Selected.
  5. In the Restore Options for All Selected Items dialog box, click Advanced.
  6. On the NAS Options tab, choose one of the following:
    • To overwrite the data, select the Overwrite check box.
    • To not overwrite the data, clear the Overwrite check box.
  7. Click OK.

Performing a Recursive or Non-Recursive Restore

Applies To: EMC Celerra (All other vendors only support recursive restores.)

You can include or exclude all files and subdirectories during the restore of a directory.

Procedure

  1. From the CommCell Console, go to Client Computers> client > NDMP.
  2. Right-click the backup set, and then click All Tasks > Browse and Restore.
  3. In the Browse Options dialog box, click View Content.
  4. Select the data that you want to restore, and then click Recover All Selected.
  5. In the Restore Options for All Selected Items dialog box, click Advanced.
  6. On the NAS Options tab, choose one of the following:
    • To include all files and subdirectories, select the Recursive Restore check box.
    • To exclude all files and subdirectories, clear the Recursive Restore check box.
  7. Click OK.

Performing an Exclusive Restore

Use this option to prevent simultaneous execution of multiple backup or restore operations on the same volume. This is useful as it avoids possible data inconsistency which can be caused by the following operations on the same volume:

  • running a backup operation during restore processing
  • running a restore operation during backup processing
  • running another restore operation during restore processing

Procedure

  1. From the CommCell Console, go to Client Computers> client > NDMP.
  2. Right-click the backup set, and then click All Tasks > Browse and Restore.
  3. In the Browse Options dialog box, click View Content.
  4. Select the data that you want to restore, and then click Recover All Selected.
  5. In the Restore Options for All Selected Items dialog box, click Advanced.
  6. On the NAS Options tab, select the Exclusive Restore check box.
  7. Click OK.

Last modified: 4/18/2019 8:29:06 PM