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Backups

Commvault backs up all of the virtual machines identified on the Content tab for a subclient, including virtual machines deployed in Azure Classic and Azure Resource Manager.

You can perform full, incremental, or synthetic full backups of virtual machines. The first backup of a virtual machine is always a full backup, regardless of the selected backup type.

When a virtual machine is discovered during backup, a client for the VM is created in the CommCell Console if one does not already exist. If a virtual machine with spaces or special characters in its name is discovered during backup, the spaces or special characters are replaced with underscores ('_') when creating the VM client name that is displayed in the CommCell Console. The VM name with spaces or special characters is still displayed on the Virtual Machine Status tab for the backup job, in the backup job summary, and in reports that include the VM name. The following special characters are replaced:

[ \ \ | ` ~ ! @ # $ % ^ & * + = < > ? , { } ( ) : ; ' \ " \ \ s / ]

What Gets Backed Up

The following items are included in backups:

  • Virtual machines deployed in Azure Classic and Azure Resource Manager (powered on or powered off)
  • Disks configured by users through the Azure portal, including disks configured on Standard and Premium storage accounts
  • For Azure Resource Manager deployments: Virtual machines configured with Azure unmanaged and managed disks. From these backups, you can restore full virtual machines and restore guest files and folders.

    You can backup and restore Azure managed disks that are up to 8 TB.

    Backups use cyclic redundancy checking (CRC) to track changes because Changed Block Tracking for Microsoft Azure (CBT) is not supported for managed disks.

  • Virtual machines (VMs) with encrypted blobs. These VMs can be protected and fully recovered. However, guest file recovery of these VMs is not currently supported.
  • Virtual machines encrypted using Microsoft Azure Key Vault. This includes the operating system information, the data disks information, secrets (for example, token and password information) and keys (for example, algorithm information).

    Backups of virtual machines encrypted using the Key Vault secrets encryption and keys encryption management features are supported; however, backups of virtual machines encrypted using the Key Vault certificates management feature are not supported.

What Does Not Get Backed Up

The following items are not included in backups:

  • Temporary disks that are automatically configured by Azure when a virtual machine is created
  • Files or network drives that are shared in Azure and mounted on a virtual machine
  • Information regarding Azure Availability Zones, which are specific locations (physical) within an Azure region

Last modified: 9/12/2019 7:27:51 PM