Server is master OES 65sp6 edir 8.7.3.9, there are other 65sp6 & 60sp6 servers in tree. Server runs CA Brighstor 11.1 and Symantec 10.1
I have found messages in the system error log:

2-16-2008 4:17:00 am: SERVER-5.70-3728
Severity = 0 Locus = 17 Class = 21
Server logical address space is running low. File Cache Maximum Size has been set to 1073741824.

3-09-2008 12:06:03 am: SERVER-5.70-3707
Severity = 3 Locus = 17 Class = 21
Server logical address space is running low. Increase the available logical space by restarting the server with the -u671252480 switch

I loaded SEG.NLM. The segstat.txt was enough to see that btrieve was taking up a bit too much memory. Per Arcserve recommendation, the bti.cfg cache (cachesize=) is set to 131072MB. The server has 4GB mem.
Please advice what is the optimum value cache size and if other bti.cfg parameters should also be changed.

I usually run a job once a week to back up several server's sys volume and several cluster volumes to a tape drive. However, I also run the same job (three times a week) to a disk volume on the same server that is running arcserve. I think mem issues began when I started backing up to disk.

Attached is the bti.cfg file.
Please advise.

haydee