Mike Hammock <[EMAIL PROTECTED]> wrote:
A zVM 5.3 user (not even one of our customers) is trying to use a 3590 to migrate from their current ( about to expire) FLEX-ES system to a system z and is having problems. The 3590-E11 is ESCON attached to the FLEX system and the customer can read and write the tape from a zOS guest. Seems to work fine there so we know (believe?) he tape drive itself is functioning properly and VM has properly recognized the tape drive (all query commands coma back with expected results: q tape details... etc.)
Not so long ago, I was testing out a SCSI Ultrium drive, which would not read any of my previous tapes, but would read any that it wrote. It turned out that it was configure with a fixed block size of 1024. Anything it wrote (with blocksize a multiple of 1024) was reblocked to 1024 and could be read back. Anything previously written with a larger blocksize would fail on read. I don't know if ESCON drives are similar in having the fixed blocksize option, though. -- glen
