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)
Block-level backup (BLIB): full vs incremental
option in the policy, NetBackup uses VMware's Changed Block Tracking feature (CBT) to reduce the backup size.This option reduces the size of full backups as well as the size of incremental backups, as follows.
Table: Block-level backup of the virtual machine: full vs incremental schedule
Type of backup | Optimization that is used in backup |
---|---|
Backup of entire virtual machine, with full schedule | Backs up only the blocks that have changed since the .vmdk was created. Note that the blocks that are not initialized are excluded from the backup. |
Backup of entire virtual machine, with incremental schedule | Backs up only the blocks that have changed since the last backup, as follows:
Note: On incremental backups, the option backs up the changed files as well as their metadata.Note: VMware CBT may occasionally reset tracking of file changes in the virtual machine, such as after a power failure or hard shutdown. For the next backup, NetBackup reads all the data from the vmdk files and the backup takes longer than expected. If deduplication is enabled, the deduplication rate is lower than expected. The following VMware article contains more information on CBT: |