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Xref: sserve comp.unix.ultrix:15326 comp.sys.dec:10529 comp.unix.bsd:8504 Newsgroups: comp.unix.ultrix,comp.sys.dec,comp.unix.bsd Path: sserve!manuel.anu.edu.au!munnari.oz.au!news.hawaii.edu!ames!saimiri.primate.wisc.edu!zaphod.mps.ohio-state.edu!wupost!cs.utexas.edu!torn!sis!richard From: richard@sis.uucp (Richard Baird) Subject: Re: Disktab for Emulex sd893 and 4.3 install to non DEC disk Message-ID: <1992Dec1.200759.25177@sis.uucp> Followup-To: comp.unix.ultrix Summary: More details of Emulex sd893 Sender: Richard Baird <richard.baird@sheridanc.on.ca> Organization: Sheridan College, Ontario, Canada References: <1992Nov27.185227.12421@sis.uucp> Date: Tue, 1 Dec 1992 20:07:59 GMT Lines: 38 In article <1992Nov27.185227.12421@sis.uucp> I wrote: >I have two questions: > >1. Does anyone have a disktab entry for these disks. Emulex calls them > SD893. On the serial # plate is the line "Seagate st82272j" and on > the flaw sheet it says "Certifier Id SABR2270", and to top it off > VMS saw these disks as ra81. I checked out the /pub/DEC/ultrix-disktabs > file on gatekeeper, but didn't see anything relevent. After some more digging I have found that this disk is what seagate refers to as a D-stroke SABER6. From my discussion with a seagate tech support person, I think this is a SABER6 with the transfer speed slowed down to accomodate DEC controllers. What kind of (magic ?) formula is used to calculate disktab entries, or is it simply trial & error?? If there is a formula (or procedure), I am willing to try and develop one myself :( (I assume partitions and number of cylinders/cylinder group are laid out to minimize disk head movement ) The disk geometry supplied by emulex is 19 heads 77 sectors/track 2607 cylinders Any help would be appreciated, Richard -- Richard Baird |e-mail: richard.baird@sheridanc.on.ca Computing & Communications |phone: (416) 845-9430 x2135 #include <disclaim.h> Sheridan College, Oakville, | Sorry, I'm not in the mood for witty Ont. Canada | comments today - maybe next week ;)