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Xref: sserve comp.unix.bsd:14477 comp.periphs.scsi:23049 comp.unix.admin:21362 Newsgroups: comp.unix.bsd,comp.periphs.scsi,comp.unix.admin Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!bunyip.cc.uq.oz.au!munnari.oz.au!spool.mu.edu!howland.reston.ans.net!math.ohio-state.edu!jussieu.fr!univ-lyon1.fr!swidir.switch.ch!newsfeed.ACO.net!Austria.EU.net!EU.net!uunet!seas.smu.edu!vivaldi!bsdsun.esd.dl.nec.com!mlee From: mlee@esd.dl.nec.com (Michael Lee) Subject: SCSI DISK ON VAX, 4.3 BSD Message-ID: <CtxAGv.Kqx@esd.dl.nec.com> Summary: need info on partition and disk specs Sender: news@esd.dl.nec.com Nntp-Posting-Host: mudshark.esd.dl.nec.com Organization: Engineering and Support Division, NEC America, Inc. X-Newsreader: TIN [version 1.1 PL8] Date: Tue, 2 Aug 1994 19:36:30 GMT Lines: 61 I installed a CMD-720 SCSI controller card in my VAX 8650 unibus. It is controlling a single Micropolis 1936-21. It works, but I am trying to size the partitions on the Micropolis drive. The 8650 is running Berkeley 4.3 The controller works OK, but I little info. from the manufacturer about configuring the disk partitions and drive specs such as cylinders and tracks. I am told that scsi disks use a variable number of tracks depending on the distance from the spindle. Do cylinder boundaries really matter on scsi drives? This is what the manufacturer told me for HP computers: Micropolis 1936-21 3.1 Gigabyte Last LBA # 5903825 50 sectors per track 21 read/write heads 2811 total data cylinders 512 bytes per cylinder 5400 RPM 3022387200 total capacity Shouldn't 5903825 * 512 = 3022387200 #blocks #byte #bytes per blk But, for SUN, they told me: ncyl = 2772 acyl = 3 pcyl = 2780 nhead=21 nsect=101 rpm=5400 bpt=51718 trks_zone=21 atrks=63 asect=11 size of c partition = 0-5879412 Does anyone have experience on VAXen running Berkeley? What is the maximum partition size for Berkeley 4.3? E-mail and/or post if you have any ideas. Thanks, Michael Lee mlee@esd.dl.nec.com 214-518-3807