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NetVault Plug-in for VMware 12.3.1 - User Guide

Introducing NetVault Backup Plug-in for VMware Installing the plug-in Configuring the plug-in Defining a backup strategy Using the image-level backup method Using the file-level backup method Restoring image-level backups Restoring file-level backups Troubleshooting

Restarting a backup job

The plug-in includes the option to restart a job to back up only those virtual machines that failed previously. To use this method, you must configure the backup option Enable Restartable backups for the job. For more information about this option, see Performing image-level backups. When a restartable backup completes with some failed virtual machines, the plug-in generates a backup index for the completed virtual machines and sets the job status to Job Stopped. You can restart this job from the Job Status page.

 
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NOTE: The Restart method does not work if you select multiple jobs simultaneously.
To restart a job:
1
In the Navigation pane, click Job Status.
2
In the list of jobs, select the job, and click Restart.
When you restart a job, the plug-in runs an Incremental Backup job to back up the failed virtual machines. The restarted instance does not back up virtual machines that are added to the host after the initial job is run.
All restarted instances are displayed as a single saveset on the Create Restore Job — Choose Saveset page.
 
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IMPORTANT: You can restart the job more than once; however, if you try to restart an instance after running the subsequent Full or Incremental Backup for that backup sequence, the job reports an index conflict error.

Resetting CBT on a virtual machine

During Incremental or Differential backups, if the plug-in is unable to determine the changed disk sectors for a virtual machine, it reports an error — “Failed to determine disk areas to back up” — and backs up the entire disk. When this error occurs, use the following procedure to reset change block tracking for the virtual machine. Before proceeding, delete any existing snapshots of the target virtual machine.

1
Start the Backup Job Wizard, and click next to the Selections list.
2
Open the NetVault Backup Client on which plug-in is installed, and then open VMware Plugin.
3
Open the ESXi or vCenter Server and the other applicable container nodes — for example, Datacenter, Cluster, Resource Pool, and other nodes — to display the target virtual machine.
4
Click the target virtual machine, and select Reset Change Block Tracking from the context menu.
This option is available to only those virtual machines on which CBT is enabled.
5
After the virtual machine is reconfigured and a message is displayed, click OK to close the dialog box.
Important notes
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When CBT is being reset, no snapshots should exist for the virtual machine. Otherwise, the reset operation fails.
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If CBT is reset for a virtual machine that is turned off, Quest recommends that you turn on the virtual machine before running a CBT-enabled backup for that virtual machine. If you perform a CBT-enabled backup in the turned off state, the backup may report the following error and fail:
Log message: Failed to determine disk areas to back up.
Log context: A specified parameter was not correct. deviceKey.
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After CBT is reset for a virtual machine, the next Incremental Backup backs up all blocks for that virtual machine. Subsequent Incremental Backups only back up the disk sectors that have changed.
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If an error message is displayed while CBT is being reset, check the “Recent Tasks” window on the vSphere Client for any messages that explain why the request failed.

Monitoring job progress

1
In the Navigation pane, click Job Status.
2
In the list of jobs, select the applicable job, and click Monitor.
3
On the Monitor Job page, you can view the following information.
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Job details: This area displays the Job ID, title, phase, instance, client, plug-in, start time, expected completion time, run count, duration, size, and status.
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Data transfer chart: This area displays the data transfer chart.
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Job logs: This area displays the log messages.

 

Using the file-level backup method

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Performing file-level backups
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Removing the snapshot and mount folder manually
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