Veritas NetBackup™ for Hyper-V Administrator's Guide
- Notes and prerequisites
- Configure NetBackup communication with Hyper-V
- Configure NetBackup policies for Hyper-V
- Backup options on the Hyper-V tab
- Hyper-V - Advanced Attributes
- Browse for Hyper-V virtual machines
- Configure Hyper-V Intelligent Policies
- NetBackup Hyper-V for SCVMM
- Windows Server failover cluster support
- Virtual machine maintenance after a restore
- Back up and restore Hyper-V
- Restoring individual files to a shared location on the virtual machine
- Use Accelerator to back up Hyper-V
- Best practices and more information
- NetBackup logs for Hyper-V and how to create them
- Errors during policy creation
- NetBackup status codes related to Hyper-V
- Appendix A. VSS backup method: Hyper-V online and offline backups
- Appendix B. Hyper-V pass-through disks
- Appendix C. NetBackup commands to back up and restore Hyper-V virtual machines
- Examples of nbrestorevm for restoring VMs to Hyper-V
Increasing the WMI create disk time-out value
It can take a long time to create a large virtual disk of type fixed (as opposed to a dynamic virtual disk). If a Hyper-V VM with a large fixed disk was backed up with the WMI method and is then restored, note: The restore job may time out before the restored virtual disk is fully written. The restore job fails with status 2821 and the VM's data is not restored.
The default time-out period for Hyper-V disk creation is 24 hours.
Do the following to allow the restore job to complete.
To increase the WMI create disk time-out value
- Use the NetBackup nbsetconfig command as follows:
nbsetconfig -h host
Where host is the name of the NetBackup master server where the configuration is to be updated.
- At the nbsetconfig prompt, enter the following to allow more time for creation of the virtual disk.
This example sets the period to 48 hours:
HYPERV_WMI_CREATE_DISK_TIMEOUT = 48
The range for HYPERV_WMI_CREATE_DISK_TIMEOUT is 0 hours to 240 hours.
A value of 0 means the restore job never times out during virtual disk creation.
- To escape the command, enter the following:
On UNIX: ctl-D
On Windows: ctl-Z
More information on the nbsetconfig command is available in the NetBackup Commands Reference Guide.