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
Cluster shared volumes timeout (Hyper-V with VSS)
For the VSS backup method, for clusters on Windows server 2008 R2: This option applies to backups of the virtual machines that are configured in a Windows Server Failover Cluster that uses cluster shared volumes (CSV). The timeout determines how long the backup job waits, in case another cluster node backs up the same shared volume at the same time.
The default is 180 (wait for 3 hours). A wait of 3 hours is recommended if you have multiple virtual machines on one CSV. The Windows 2008 R2 cluster node owns the CSV for the entire duration of the backup.
If you do not want NetBackup to wait for another backup to release the shared volume, set the value to 0. If at the same time another cluster node backs up a shared volume that this backup requires, the backup fails with status 156.
The appropriate value for this timeout parameter depends on the following factors:
The average backup job duration for the virtual machines that reside on the same CSV. The job duration depends on the size of the virtual machines and the I/O speed.
The number of virtual machines on the same CSV.
On Windows server 2012 or later, cluster nodes can back up the same cluster-shared volume simultaneously. As a result, NetBackup does not use theoption if the cluster is on Windows 2012 or later.
More information is available on NetBackup support for the virtual machines that use CSVs.