During backups, the Virtual Server Agent creates a snapshot of the virtual machine data directly from the datastore. The snapshot is then moved directly to the storage media without requiring any dedicated disk cache on the proxy server. In the case of incremental backups, Change Block Tracking (CBT) helps quickly identify the data blocks on the virtual machine that have changed since the last backup.
Similarly, during restores, virtual machines are restored directly to the appropriate ESX Server and datastore without the need for staging on the proxy server with VMware Converter. This approach provides much faster restores.
