Veritas NetBackup™ for VMware Administrator's Guide
- Introduction
- Required tasks: overview
- Notes and prerequisites
- Configure NetBackup communication with VMware
- Adding NetBackup credentials for VMware
- Validating VMware virtualization server certificates in NetBackup
- Configure NetBackup policies for VMware
- VMware backup options
- Exclude Disks tab
- Configure a VMware Intelligent Policy
- Reduce the size of backups
- Back up virtual machines
- Use Accelerator to back up virtual machines
- Restore virtual machines
- Restoring the full VMware virtual machine
- Virtual Machine Recovery dialog boxes (restore to original location)
- Virtual Machine Recovery dialogs boxes (restore to alternate location)
- Restoring VMware virtual machine disks by using Backup, Archive, and Restore
- Restoring VMware virtual machine disks by using NetBackup commands
- Restoring individual VMware virtual machine files
- Browse and search virtual machines for restore
- Restore virtual machines with Instant Recovery
- Use NetBackup for vCloud Director
- Virtual machine recovery dialog boxes for vCloud Director
- Best practices and more information
- Troubleshooting
- Appendix A. NetBackup commands to back up and restore virtual machines
- Using NetBackup commands to create a VMware policy
- Appendix B. Configuring services for NFS on Windows
- About configuring services for NFS on Windows 2012 or 2016 (NetBackup for VMware)
- About configuring services for NFS on Windows 2008 and 2008 R2 (NetBackup for VMware)
- Appendix C. The Reuse VM selection query results option
- Appendix D. Backup of VMware raw devices (RDM)
Block-level backup (BLIB): full vs incremental
This topic applies to policy configuration for NetBackup for VMware.
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: |
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