gad@linac.fnal.gov (Greg A. Deuerling) (02/24/91)
I've just got a used Seagate ST257N with no documentation. Can any one out there tell me how to set up the SCSI ID on this. I have a ST277N also, but the jumper block is not the same on the ST157N. Any help at all will be much appreciated. Thanks... gad =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= = Greg Deuerling, Fermi National Accelerator Laboratory = = P.O.Box 500 MS#127 Batavia, Il 60510 1(708)840-4629 = = Computer R&D Group = = gad@linac.fnal.gov = =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
thad@public.BTR.COM (Thaddeus P. Floryan) (02/24/91)
In article <#Y-#3D=@linac.fnal.gov> gad@linac.fnal.gov (Greg A. Deuerling) writes: > I've just got a used Seagate ST257N with no documentation. ^^^^^^ >Can any one out there tell me how to set up the SCSI ID on this. I have >a ST277N also, but the jumper block is not the same on the ST157N. >Any help at all will be much appreciated. From Seagate's ST125N/ST138N/ST157N Product Manual, Rev. C, page 14: 50-pin SCSI conn. Config ::::::::::::::::::::::::: ::::: Seagate documents the "Config" jumper block as: 2 4 6 8 10 +-------------------+ | O O O O O | | O O O O O | +-------------------+ 1 3 5 7 9 J1- 2: jumper IN, PARITY enabled; jumper OUT, no parity J3- 4: no connection J5- 6: SCSI ID bit 4; jumper IN, bit=1; jumper OUT, bit=0 J7- 8: SCSI ID bit 2; jumper IN, bit=1; jumper OUT, bit=0 J9-10: SCSI ID bit 1; jumper IN, bit=1; jumper OUT, bit=0 4 2 1 SCSI ID - - - ------- 0 0 0 0 0 0 1 1 ... ... 1 1 1 7 HOWEVER, from my notes and my recollection of installing several ST157N drives, and confirmed by Seagate itself, the three ID jumper positions are reversed from what the docs show; thus: J5- 6: is really SCSI ID bit 1 J7- 8: is really SCSI ID bit 2 J9-10: is really SCSI ID bit 4 Thad Floryan [ thad@btr.com (OR) {decwrl, mips, fernwood}!btr!thad ]