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From: rashid@rk.ios.com (Rashid Karimov)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: HD geometry woes..
Date: 17 Nov 1995 16:04:44 GMT
Organization: Internet Online Services
Lines: 38
Message-ID: <48ibqs$cir@news2.ios.com>
References: <47s6ga$1q1@rosebud.sdsc.edu> <4851me$k0i@uriah.heep.sax.de>
NNTP-Posting-Host: rk.ios.com
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Hi there folx,
J Wunsch (j@uriah.heep.sax.de) wrote:
: Brent Mosbrook (ZyXEL) <brentm@hydra.sdsc.edu> wrote:
: >(using 2.05R)
: >I've got an Adaptec 1542 w/ 2.10 bios, and a Microp 1528 (1.3GB SCSI)
: >It says during the partitioning that the "correct" geometry is 4369x12x50
: >all attempts to alter this yield an "incorrect geometry" msg.
: The correct geometry for an Adaptec is XXXX * 32 * 64, with XXXX being
: the number of megabytes for your drive (rounded down to the nearest
: megabyte boundary).
I usually use XXXX * 64 * 32 -
works fine here for about 12-14 servers. The HDDs are
mostly SEAGATE Barracudas.
Is there really a diiference between 32 * 64 and
64 * 32 - say in speed and/or FS layout optimization ?
: You cannot really ``turn off'' translation for a SCSI controller,
: since SCSI does only know absolute block addressing, so *any*
: ``geometry'' (as seen from outside) is a translated one.
: --
--
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