*BSD News Article 94355


Return to BSD News archive

Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!news.ecn.uoknor.edu!feed1.news.erols.com!cpk-news-hub1.bbnplanet.com!news.bbnplanet.com!news.apfel.de!univ-lyon1.fr!jussieu.fr!eurocontrol.fr!polaris.eurocontrol.fr!not-for-mail
From: roberto@eurocontrol.fr (Ollivier Robert)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Ultra Wide Scsi - which controller?
Date: 24 Apr 1997 09:57:46 GMT
Organization: Eurocontrol EEC, Bretigny, France
Lines: 31
Message-ID: <5jnaqq$ak1$5@polaris.eurocontrol.fr>
References: <5j5gla$r88$1@csnews.cs.colorado.edu> <5j7ifv$f97$2@polaris.eurocontrol.fr> <5jleol$796$1@colias.tutics.tut.ac.jp>
NNTP-Posting-Host: caerdonn.eurocontrol.fr
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 8bit
X-Newsposter: trn 4.0-test56 (2 Mar 97)
Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:39667


    [courtesy cc of this posting sent to cited author via email]

In article <5jleol$796$1@colias.tutics.tut.ac.jp>,
Sarif Koichi <sarif@luehdorfia.dsl.tutics.tut.ac.jp.> wrote:
>  Could you tell me some logical explanation about this.

It is difficult to saturate a SCSI bus with only one drive. With multiple
drives, you can use the bandwidth in a better manner. You can multiplex
commands on multiple drives resulting in better results.

>  Just then, if you have 2 drives could you tell me which to put in one
> drive and what to put on the other drive. Could it be swap drive, and
> system drive (all in / directory).

Here is what I use here with 2x 2GB disks

Filesystem   1K-blocks     Used    Avail Capacity  Mounted on
/dev/sd0a        29727    17294    10055    63%    /
/dev/sd0s1e      98479    56967    33634    63%    /usr
/dev/sd1s1e     506991   357270   109162    77%    /usr/local
/dev/sd0s1f      29727       15    27334     0%    /tmp
/dev/sd0s1g      98479    10029    80572    11%    /var
/dev/sd1s1f     197951   108373    73742    60%    /usr/obj
/dev/sd0s1d     993759   478907   435352    52%    /home
/dev/sd1s1g     595839   336308   211864    61%    /home/ncvs
/dev/sd1s1h     628639   563745    14603    97%    /spare
/dev/sd0s1h     670735   279519   337558    45%    /src

-- 
Ollivier ROBERT -=- FreeBSD: there are no limits -=- roberto@eurocontrol.fr
FreeBSD FAQ: <URL:http://www.FreeBSD.org/FAQ/>