Backing up data on NTFS or ReFS mounted volumes

Backing up a volume from the mount point is especially useful for volumes that have no drive letter assignment. If the volume mounted on the mount point can also be referenced by drive letter, then the volume does not have to be backed up over the mount point.

For example, if the F:\ drive is mounted on C:\mount then the data can be backed up by including C:\mount or the F:\ drive in the domain. In this case, duplicate backups can be avoided by configuring the domain to back up C:\mount or the F:\ drive, but not both.

To back up the data on the mounted volume, run an incremental backup of the mount point by using the incremental command:

dsmc incremental c:\mount

You can also add C:\mount to the DOMAIN option to back up the data on the mount point as part of a domain incremental backup operation. For example, to back up the system state, the C:\ drive, and the data on the volume that is mounted on C:\mount as part of a scheduled incremental backup, configure a DOMAIN statement as follows:

domain c: c:\mount systemstate

If you use exclude.dir to exclude C:\mount, then:

The C:\mount directory is not backed up during an incremental backup of the C:\ drive.
Nothing is backed up during an attempt to back up C:\mount; a message is displayed indicating that C:\mount is excluded.