Configuring Live Sync for Any Supported Hypervisor

Configure Live Sync on the subclient for virtual machines to be replicated.

If a virtual machine in a Live Sync schedule is protected by multiple subclients, the VM will be replicated from the subclient with the latest backup.

The best method for scheduling backups of source VMs is to use the “Incremental Forever” approach:

  • Perform an initial full or synthetic full backup to create destination VMs using Live Sync.
  • After the destination VM is created, run regular incremental backups to keep the destination VM current.

Note: If you perform a full backup, the live sync operation performs a full replication from the source VM to the destination VM. After the initial creation of destination VMs, synthetic full backups do not affect replication at all.

Before You Begin

General Requirements

  • Configure a virtualization client for the destination hypervisor.
  • To add virtual machines to the Live Sync schedule, the virtual machines must have been backed up at least once.
  • To enable multiple jobs to run for each Live Sync schedule, create the maxJobsPerSyncSchedule additional setting for CommServeDB.GxGlobalParam to specify the maximum number of jobs that can be run for each Live Sync schedule. When the value for this setting is greater than 1, multiple Live Sync jobs execute simultaneously for each schedule, with each job using a separate stream. This setting enables schedules with large numbers of virtual machines to complete more quickly.
  • You can only modify destination network settings for Windows VMs as part of Live Sync operations. Linux VMs are restored without network connections.
  • To include RDMs and independent disks for VMware VMs, you must use IntelliSnap backups as source for live sync operations. For more information, see Include RDMs and Independent Disks in IntelliSnap Backup Operations.
  • For VMware Linux VMs that have static IP addresses, you can assign static destination IP addresses as part of a restore or Live Sync operation. This feature requires that you use a File Recovery Enabler for Linux (FREL) for the operation. IP address mapping is supported for the following Linux guest operating systems: RHEL 6 and 7, CentOS 6 and 7, or SUSE (SLES) 11 and 12.

Hypervisor-Specific Requirements

Requirements and options for Live Sync operations depend on the destination hypervisor. For hypervisor-specific requirements (including requirements for source VMs), and for information about the options that you can specify on each page of the Live Sync Options for Subclient wizard, see the following topics:


  1. From the CommCell Console, navigate to Client Computers > virtualization_client > Virtual Server > instance > backup_set.
  2. Right-click the subclient that contains the virtual machine data and select Live Sync > Configuration.

    The Select Live Sync Destination dialog box appears.

  3. Select one of the following destination hypervisors:
    • Amazon
    • Azure Resource Manager
    • Azure Stack
    • Microsoft Hyper-V
    • VMware
  4. Click OK.

    The Live Sync Options for Subclient wizard opens.

  5. On the Destination page, Virtual Machines or Instances page, and Restore Options page, provide the information for the destination hypervisor and press Next.
  6. To replicate changes from an auxiliary copy or backup copy:
    1. Click Advanced.

      The Advanced Live Sync Options dialog box appears.

    2. On the Copy Precedence tab, select Restore from copy precedence, and then enter the number of the storage copy properties for the auxiliary copy or backup copy.
    3. Click OK.

    When Live Sync is configured to use an auxiliary copy or backup copy, the Live Sync operation uses the copy as the source rather than the primary backup. If the After Backup Job Completes option is selected in the schedule, Live Sync automatically waits until the data is ready on the secondary copy before running the Live Sync job.

  7. Click Next.

    The Job Options page appears.

  8. To create a schedule for replication, select Schedule and then click Configure.

    The Schedule Details dialog box appears.

  9. Enter a schedule name, and then select one of the following options:
    • After Backup Job Completes: Automatically copy changes to the destination VM after each backup job.

      If the schedule is configured to sync from a secondary copy, the Live Sync operation automatically waits until the data is ready on the secondary copy before running the Live Sync job.

    • To replicate changes on a periodic basis, select Daily, Weekly, Monthly, or Yearly; then set up the Live Sync schedule to control how often changes are replicated to the destination VM. If no new backups have been run since the last Live Sync, the scheduled Live Sync does not run.
  10. Click Next.

    The Summary page appears.

  11. Click Finish.

Last modified: 4/9/2020 7:44:14 PM