A pretty well debated topic in every shop. Unless you want to spend lots of
time analyzing data ownership on your systems a 'uid 0' (aka root) user is
the only one which has access to everything its ever likely to need.

Do it any other way and you have an admin/maintenance overhead.

A scenario that works is having a 'data owner' user or group for business
data, then running a client pushed dsmc to back it up from a job scheduler
or otherwise running as a user with appropriate authority and perhaps
backing up as a virtual node. I wouldn't try to use the ADSM scheduler -
sounds like a headache waiting to happen. Thats the business data taken care
of, the rest ie operating system, spool areas etc, use the root user.

Regards
Alan