I have a customer who has recently upgraded from 3.1.2.50 ADSM to TSM 
3.7.2.0. Since the upgrade, they have noticed that they are no longer getting 
the tape capacity they had been getting under ADSM. They are using a SCSI tape 
library that contains Sony SDX-500C tape drives - AIT2 tape technology. Before 
the upgrade, they were getting approximately 100GB per tape. Now they are 
getting closer to 35 GB or so. They have even reported one tape that got 13GB 
before TSM reported that the tape was full and then requested a new scratch 
tape. 
    I have opened a problem with the Software Support Center on this, but I am 
wondering if anyone else has reported or noticed this problem. If so, did you 
get a resolution to it?


    Dave Canan
    Certified ADSM/TSM Specialist
    ddcanan AT attglobal DOT net