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NetVault Plug-in for NDMP 13.3 - Application Notes for NetApp ONTAP

Additional notes: BRE

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A backup job can be resumed only if suitable checkpoints exist for the job. The checkpoints are set during phase 4 of an NDMP backup and are logged as Background messages in the NetVault Backup logs.
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BRE may fail if you restart the filer. Certain circumstances may prevent the filer from correctly continuing a backup restart. When this error occurs, the message “Node Data Missing for File <Filename>” is written to the NetVault Backup logs during the index building stage. If this message is displayed in the log, it implies that the restart has failed and the job cannot be resumed.
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If you restart the NetVault Backup Service, all information related to backup checkpoints is lost. BRE does not work over NetVault Backup Service restarts.
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If network connectivity is lost during backup and the filer is unable to detect this failure, the session becomes unresponsive. When this error occurs, you must manually kill the session. To kill a session, type the following command at the command prompt on the filer:
ndmpd kill <sessionID>
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When you kill a session, the drives or changer in use go offline. To bring them back online, use the Check method.
Another method to bring offline drives back online is to restart the NetVault Backup Service. However, BRE does not work if you restart the service.

Backing up data in C-mode

Starting with 10.0.5, NetVault Backup uses the CAB extension to perform backup and restore operations for cluster nodes running Data OnTAP 8.2.2 and later. The CAB extension enables the NDMP server to provide affinity information about volumes and tape devices to the backup application that support the CAB extension. NetVault Backup uses this affinity information to determine the data transfer path used during backup and restore operations. If a target volume and tape device are on same cluster node, a local backup or restore operation is performed; if they are on different cluster nodes, a three-way backup or restore operation is performed.

 
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NOTE: During an NDMP backup or restore using the CAB extension, if a fail-over occurs, the job continues without any interruption. After the fail-over, if the volume is moved to a different node, the data transfer path may change depending on the affinity information provided by NetApp.
To back up one or more volumes in C-mode:
1
In the Navigation pane, click Create Backup Job.
— or —
In the Navigation pane, click Guided Configuration, and then on the NetVault Configuration Wizard page, click Create Backup Jobs.
2
In Job Name, specify a name for the job.
Assign a descriptive name that lets you easily identify the job for monitoring its progress or restoring data. The job name can contain alphanumeric and nonalphanumeric characters, but it cannot contain non-Latin characters. There is no length restriction. However, a maximum of 40 characters is recommended on all platforms.
3
In the Selections list, select an existing Backup Selection Set, or complete the following steps to create a set.
a
Next to the Selections list, click Create New.
b
On the NetVault Backup Selections page, open the NetVault Backup Server, and then open NDMP Client.
c
To display the Volumes node, open the applicable filer in the list of added servers.
d
Select the data that you want to back up.
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Back up all volumes: Select the Volumes node.
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Back up individual Vserver: Open the Volumes node, and select the Vserver that you want to back up.
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Back up individual volumes: Open the Volumes node, open the Vserver, and select the volumes that you want to back up.
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Back up individual files and directories: Open the Volumes node, open the Vserver, and then open the target volume. Select the files and directories that you want to back up.
 
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NOTE: If you omit child-level items after selecting the parent node, the job fails. To perform selective backups, open the parent node, and select each item that you want to back up.
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Back up snapshots: Open the Snapshots node, open the Vserver, and then open the applicable volume to list the snapshots available for a backup. Select the snapshot that you want to back up. You can only select a single snapshot.
 
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IMPORTANT: If you do not want to use Direct Access Restore (DAR), use the NetApp NODAR build.
 
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NOTE: NetVault Backup supports volume-level and file-level browsing.

In Data ONTAP 8.x C-Mode, you can only define jobs at the volume level; you cannot define jobs at the directory or file level. However, you can also define a single path that includes a directory or file, but you must define this path by manually entering the absolute path to the applicable content.

In Data ONTAP 9.x C-Mode, you can define Selection Sets at the SVM, volume, snapshot, directory, or file level.

For more information about defining and using single paths, see Backing up individual data paths in C‑mode.
4
In the Plugin Options list, select an existing Backup Options Set, or complete the following steps to create a set.
 
* 
NOTE: This step is not applicable if a file or directory is the root selection item of a backup. The backup options are only available if you have selected a volume or subvolume as the root item for a backup.
a
Next to the Plugin Options list, click Create New.
b
Configure the following settings:
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NDMP Backup Options: For more information about these options, see NDMP Backup Options
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Sub Jobs: For more information about these options, see Sub Jobs.
c
Click Save, and in the Create New Set dialog box, type a name for the set.
d
To close the dialog box, click Save.
5
Complete steps 5 and 6 in Backing up data in 7.x-7G and 7-mode.

Backing up individual data paths in C-mode

Backing up individual data paths in C‑mode

In Data ONTAP 8.x C-Mode, you cannot open the Volumes node to browse or select the contents. However, you can specify a single data path for a backup.

1
In the Navigation pane, click Create Backup Job.
— or —
In the Navigation pane, click Guided Configuration, and then on the NetVault Configuration Wizard page, click Create Backup Jobs.
2
In Job Name, specify a name for the job.
Assign a descriptive name that lets you easily identify the job for monitoring its progress or restoring data. The job name can contain alphanumeric and nonalphanumeric characters, but it cannot contain non-Latin characters. There is no length restriction. However, a maximum of 40 characters is recommended on all platforms.
3
Next to the Selections list, click Create New.
4
On the NetVault Backup Selections page, open the NetVault Backup Server, and then open NDMP Client.
5
Click the applicable filer, and select Enter Backup Path from the context menu.
6
In the NDMP Backup Request dialog box, configure the Directory option.
Specify the full path to the item that you want to back up. You can include a single volume, qtree, directory, or snapshot. This option does not support individual files. If you specify a filename, backup fails.
Use the following format to specify the backup path:
/<vserverName>/<volumeName>/.snapshot/<snapshotName>
Example:
/vs1/vol2/.snapshot/daily.2014-06-16_0010
For more information about snapshot names, see the relevant NetApp Data ONTAP documentation.
7
Set the Dump Level and the remaining backup options.
For more information, see NDMP Backup Options.
8
To save the settings, click Ok.
9
Complete steps 5 and 6 in Backing up data in 7.x-7G and 7-mode.

Restoring data

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Restoring data using the plug-in
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Restoring Incremental Backups
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Renaming or relocating data
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Restoring data to an alternate filer
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Searching for files in savesets
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