Hello, I'm looking for some suggestions on how to possibly improve I/O performance to a PDS. A user is running a job that is reading a large parmlib (through PROJCL I believe). I think the access is random rather than sequential. The parmlib has ~180,000 members is has an LRECL of 80/BLKSIZE of 27,920. The performance team has reviewed a found ~ 6ms response time to the volume that houses the PDS with most of the time being connect time.
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