If you select a volume that contains Lotus Domino data for backup, the Agent for Lotus Domino Server (Lotus Domino Agent) determines which Domino data should not be included in a volume level backup. For example, .ntf and .nsf files, nlo files, as well as any active log files, should not be part of the backup because they are opened for exclusive use by the Lotus Domino system. These files will be automatically excluded for backup by a feature called Active File Exclusion. If this exclusion did not happen during a non-snapshot backup, these files would appear as in use - skipped. If this exclusion did not happen during a snapshot backup, the files would be backed up in a possible inconsistent state, which could create restore issues.

See Backing up data.

See Lotus Domino Agent backup options.