Um, for tape drives and stuff, I don't think the accounting log will help
much, unless you look at media wait times.  What I would do is use the
dsmulog utility to write the dsmserv stdout to files, and implement a
cronned utility that keeps those files.  I have my dsmulogs (roughly the
same stuff as the activity log) going back about a year, so trending tape
drive usage gets a lot easier if you write a script to go through and
collate mounts and dismounts.  I also have a cronned process that does q pr,
q sess, q mo, and q stg and stores it in a circular alog.

I'd post some of my scripts, but I don't have the time to go through legal's
release process.

Alex Paschal
Storage Administrator
Freightliner, LLC
(503) 745-6850 phone/vmail