My experience with Backup is a little different.
There is a new file under root:wiki:backup called
dw-backup-20170310-130845.tar and it was 647mb and now with refresh of the screen 1.3gb and growing. No message about finishing yet. Now 1.5gb. Its taking awhile to finish. 1.9gb, 2.1gb
There is also a file called
dw-backup-20170310-130845.tar.manifest.txt
Hope it finishes soon. Its now 3gb! Must be the history of changes. I probably should clean that up a little somehow.
https://www.dokuwiki.org/plugin:backup?s[]=backup&s[]=plugin
Well it seemed to stop at 3.2 gb but there was no message, just a blank page still. So I tried again, this time unchecking Old Revisions of Pages which should reduce the size considerably.
Well, now I can't delete these files because I get a timeout.