snapshot

--snapshot={always|possible|none}

Defines whether to back up files directly (one by one) or by taking an instant data snapshot.

Available values of the parameter are as follows:

• possible (by default)

  Create a snapshot if it is possible. Back up files directly if taking a snapshot is not possible.

• none

  Do not create a snapshot. Always back up files directly. Trying to back up files that are opened for exclusive access will result in a read error. Also, files in the backup may not be time-consistent.

• always

  Always create a snapshot. Using a snapshot enables the backing up of all local files. This includes files opened for exclusive access. The files will be backed up at the same point in time. If a snapshot cannot be taken, the backup will fail.