VM-Centric Operations for Virtual Server Agent with VMware (VSA V2)

The Virtual Server Agent (VSA) for VMware supports VM-centric backup and restore operations using Indexing Version 2. (This feature is also called VSA V2 or VSA Indexing V2.)

In Commvault Version 11, Service Pack 14, this support is available for streaming and IntelliSnap backup operations performed using the Virtual Server Agent (VSA) with VMware.

For a new Commvault deployment, Indexing Version 2 is enabled by default, and new virtualization clients automatically use Indexing Version 2 to support VM-centric operations. For an existing Commvault deployment, you must enable Indexing Version 2. For more information, see Requirements for VM-Centric Operations.


  • Collecting file and folder information during backups is not supported with Indexing Version 2. Browse and restore operations use the live browse method to get file and folder information.
  • To restore guest files and folders from a backup that was performed using Indexing Version 2, use the disk library for one of the copies (primary or secondary) and perform a live browse from the disk library. Guest file restores from tape are not supported with Indexing Version 2, because file details are not collected in backups that use Indexing Version 2, and live browse operations are not supported from tape copies. As a workaround if no disk library is available, you can restore a full VM or a virtual machine disk from a tape copy.
  • In 11.20 and later feature releases, current throughput will not be updated at the parent VSA job level. You should check the VM status to confirm current throughput for each job.

Key Features

  • VM clients:
    • Automatically create clients, backup sets, and subclients for each virtual machine during discovery. These entities are visible to end users as well as administrators.
    • Associate VM backup sets to the parent backup set.
    • Enable or disable activity (backup, restore, and data aging) for individual VMs.
    • Specify security settings for individual VMs. In the CommCell Browser, end users can only see clients for virtual machines for which they have appropriate ownership and permissions.
    • If you remove a VM from all subclients, the VM is automatically deconfigured, and the backup data for the VM is marked for data aging.
  • Backups:
    • Perform streaming or IntelliSnap backup operations and backup copy operations.
    • A backup operation for a subclient runs as a VM Admin job. For a subclient backup, Commvault automatically creates child jobs with unique IDs for each VM, and commits VM-specific backup data as each child job finishes.
    • Distribute VM backup jobs across the available VSA proxies and MediaAgents, with a separate stream for each job.
    • Index extents are backed up and retained for each VM. VM Admin jobs for subclients do not carry indexing information.
    • Changed block tracking (CBT) information is included as part of the index metadata. Cyclic redundancy check (CRC) information is stored as part of the extent header for each extent, and changed extents are backed up.
    • Run synthetic full backup operations for individual VMs.

      You can run incremental backups in parallel while synthetic full backups are running.

    • Perform multi-stream synthetic full backup operations.
    • Perform application-aware backups.
    • For streaming backups, incremental backups are maintained when VMs are moved to a different subclient within the same backup set.
  • Job Control:
    • VM Admin jobs for subclients initiate child jobs for each VM.
    • Perform job control operations for each VM.
    • Set the job priority for each VM.
    • Define an Operation Window from the backup set of a VM client, to skip the VM if a job that includes the VM is launched outside of the defined operation window.
  • Restores:
    • Browse and restore VMs or files from the client or subclient for an individual VM, or from the backup set for a subclient.
    • For a restore job that includes multiple VMs, the restore operation can use up to 10 streams (one stream per VM).
    • Customized options for end user restores.
    • Perform live mount operations and live recovery operations for an individual VM, from streaming backups, IntelliSnap backups, or backup copies.
    • Perform live sync operations for VMs from streaming backups or from IntelliSnap backups.

      From the Command Center, you can configure replication for individual VMs. From the CommCell Console, you must configure live sync operations for a subclient.

  • Other operations:
    • Customize retention and data aging for each VM.
    • Identify a subset of VMs for secondary copy operations.
    • Generate reports for specific VMs.

Last modified: 10/28/2020 5:16:28 PM