NetBackup™ for VMware Administrator's Guide
- Introduction
- Required tasks: overview
- Configuring RBAC roles for VMware administrators
- Notes and prerequisites
- VMware vSphere privileges
- Managing VMware servers
- About VMware discovery
- Add VMware servers
- Change resource limits for VMware resource types
- Configuring backup policies for VMware
- Backup options on the VMware tab
- Exclude disks tab
- Configuring a VMware Intelligent Policy
- About the Reuse VM selection query results option
- Use Accelerator to back up virtual machines
- Configuring protection plans for VMware
- Malware scan
- Instant access
- Instant rollback
- Continuous data protection
- Backing up virtual machines
- VM recovery
- VMware agentless restore
- Restoring Individual files and folders from VMware backups
- Using NetBackup to back up Cloud Director environments
- Recover VMware Cloud Director virtual machines
- Restore virtual machines with Instant Recovery
- Protecting VMs using hardware snapshots and replication
- Best practices and more information
- Troubleshooting VMware operations
- NetBackup logging for VMware
- Snapshot error encountered (status code 156)
- Appendix A. Configuring services for NFS on Windows
- About configuring services for NFS on Windows 2012 or 2016 (NetBackup for VMware)
- Appendix B. Backups of VMware raw devices (RDM)
The origin of the snapshot failure: NetBackup or VMware?
When a NetBackup snapshot job fails with status 156, the problem may originate in your VMware environment rather than in NetBackup. You can begin to isolate the problem to one environment or the other by using vSphere Client to take a snapshot of the VM. NetBackup support often uses this approach to investigate a snapshot issue.
To identify the environment in which the snapshot error occurred
- In the vSphere interface, right-click on the VM and click Snapshots > Take Snapshot.
- In the Take VM Snapshot for dialog, click Quiesce guest file system if the NetBackup policy was enabled for virtual machine quiesce (the default).
In the NetBackup policy, the Virtual machine quiesce option is in the VMware - advanced attributes on the VMware tab.
Note:
In the Take VM Snapshot for dialog, make sure the Snapshot the virtual machine's memory option is not selected. NetBackup does not use that option.
- Start the snapshot and check the Recent Tasks pane for snapshot status.
If the snapshot does not complete, the problem with the NetBackup snapshot may be in the VMware environment. Consult your VMware documentation.
If the VMware snapshot is successful, the issue may be with NetBackup.
For relevant error messages, consult the NetBackup bpfis logs.
See NetBackup logging for VMware.
The following topic summarizes some common causes of 156 errors: