I have a server with SYS: and VOL1 volumes. I am running NW65 SP4.
BrightStor Arc Serve 11.1 build 753.816

There are two scheduled backup tasks. One runs Monday through Thursday and
backs up all of the SYS: volume and all but one directory on Vol1. This
backup works correctly The second tasks backs up Vol1:\users. This second
task abends the server. I tried backing up only two files as a manual task
but got the same results.
The only suggestion I have found so far says to verify files are not
compressed. They are not. This problem started about the time I upgraded
to NW65 SP1 this summer. This must be a problem with the user directory
but I have not found a discussion on this subject. Anybody got a CLUE!