Once booted, the guest will read existing blocks from the backup storage and write/re-read new blocks on the configured storage (whether beeing a datastore or a temporary file on the vPower NFS server local drive in the folder "%ALLUSERSPROFILE%\Veeam\Backup\NfsDatastore"). To ensure consistent performances during the IVMR process, it is recommended to redirect the writes of the restored guest on a production datastore.