Our TMSCLEAN job is taking longer to run now. On a day-to-day basis (excluding weekends) it scratches around 45,000 tapes. Before, it used to run under 3 hours with the scratching of about 270+ tapes per minute, but now it takes more than 7 hours and is scratching 100 tapes per minute. Are there any parameters, techniques or changes that would improve the performance of TMSCLEAN?
Release : 14.0
Component : CA 1 Tape Management
The TS7700 microcode was recently upgraded from 22.214.171.124 to 126.96.36.199.
The TS7700 microcode upgrade is causing the TMSCLEAN performance degradation. IBM indicates that this is a known issue with CMVC 92147 and will be fixed in 8.51PGA2.