Veeam Backup & Replication 10
User Guide for VMware vSphere
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Backup from Storage Snapshots with Snapshot Retention

You can configure a backup job to create regular backup files on the backup repository and, additionally, maintain a snapshot chain on the storage system. Veeam Backup & Replication lets you create storage snapshots in the following destinations:

  • Primary storage array where VM disks are hosted
  • Secondary storage arrays

Depending on the backup job settings, the created storage snapshots can be application-consistent or crash-consistent.

The backup job of this type is performed in the following way:

  1. Veeam Backup & Replication triggers the vCenter Server to create a VMware vSphere snapshot for a VM.
  2. Veeam Backup & Replication instructs the storage system to create two snapshots of a volume or LUN capturing VM disks:
    • A new snapshot on the storage system. This snapshot remains in the snapshot chain until it is removed by the retention policy.
    • A temporary snapshot for backup or replication operations. This snapshot is removed after backup or replication is complete.
  1. Veeam Backup & Replication removes the created VMware vSphere snapshot from the VM snapshot list.
  2. Veeam Backup & Replication uses the temporary storage snapshot as a data source for backup and replication.
  3. Veeam Backup & Replication performs cleanup operations and removes the temporary snapshot on the storage array.
  4. Veeam Backup & Replication checks the number of storage snapshots in the snapshot chain. If the number exceeds the value defined in retention policy settings, Veeam Backup & Replication instructs the storage system to remove the earliest snapshot from the snapshot chain.

Backup from Storage Snapshots with Snapshot Retention 

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