On Thu, 24 May 2018 20:03:55 -0500, Edward Gould wrote: > >Our big boss was trying to show the board how he tried to save money. They >sort of forced him into getting STC (now STK) tape drives. All of a sudden >some of our jobs were getting S237 (block count did not match trailers), STC >said we had bum tapes, we went through all sort of shenanigans to prove they >weren’t. I had to write a program that counted blocks and compare it the tapes >count. The entire mess ended up with STC getting kicked out and IBM drives >were brought back in. Of course never a S237 with a IBM drive. Our tape >library while not super large it was large and finally management finally >figured it out in order to get good people you had to hire/pay for them. > You couldn't just discard the tape if the data were precious.
Just curious: did it write blocks and not count them or count blocks and not write them? (Full disclosure: I may have been a StorageTek (AKA STC, AKA STK) employee around that time.) I once read a tape, all CDC equipment; no IBM nor StorageTek and discovered an entire block missing with no error reported. I visually inspected the first few meters of the tape and noticed a transverse crease. I assume that wafted exactly one block over the read heads. Score -1 for NRZI. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
