This is an archive version of the document. To get the most up-to-date information, see the current version.On-Host Backup
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On-host backup of VMs on SMB3 shares is similar to on-host backup of VMs on local storage and CSV. During on-host backup, the Hyper-V VSS components, File Share Shadow Copy Provider and Veeam Data Mover Service are invoked on the source Hyper-V VSS host. The File Share Shadow Copy Agent is invoked on the SMB3 server. As a result, all data processing is accomplished directly on the source Hyper-V host and on the SMB3 server.
The on-host backup process includes the following steps:
- Veeam Backup & Replication triggers a shadow copy of the necessary file share. Microsoft VSS components invoked on the Hyper-V host and SMB3 server create a shadow copy of the volume on which the requested file share is located and expose the shadow copy as a file share on the SMB3 server.
- The Veeam Data Mover Service deployed on the Hyper-V host accesses the shadow copy file share exposed on the SMB3 server. Veeam Backup & Replication retrieves VM data from the shadow copy, processes the data and copies it to the destination.
- Once the backup process is complete, the shadow copy is deleted.
