Which O/S? If Windows, is Incremental selection made based on Archive Bit?
This property is found under NetBackup Management > Host Properties > Clients >
Selected client > Windows Client
Extract from Admin Guide I:
The
Incrementals based on archive bit property specifies that NetBackup include files in an incremental backup only if the archive bit of the file is set. The system sets this bit whenever a file is changed and it normally remains set until NetBackup clears it.
A full backup always clears the archive bit. A differential-incremental backup clears the archive bit if the file is successfully backed up. The differential-incremental backup must occur within the number of seconds that the
Wait time before clearing archive bits property indicates. A cumulative-incremental or user backup has no effect on the archive bit.
For more information, see “Wait time before clearing archive bit” on page 399.
Disable this property to include a file in an incremental backup only if the datetime stamp for the file has been changed since the last backup. For a differential-incremental backup, NetBackup compares the datetime stamp to the last full or incremental backup. For a cumulative-incremental backup, NetBackup compares the timestamp to the last full backup.
If you install or copy files from another computer, the new files retain the date timestamp of the originals. If the original date is before the last backup date on this computer, then the new files are not backed up until the next full backup.
