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Date:      Sun, 7 Sep 1997 14:21:09 +0200
From:      Ollivier Robert <roberto@keltia.freenix.fr>
To:        current@FreeBSD.ORG
Subject:   Re: lousy disk perf. under cpu load (was IDE vs SCSI)
Message-ID:  <19970907142109.16988@keltia.freenix.fr>
In-Reply-To: =?iso-8859-1?Q?=3C199709062140=2EXAA07333=40sos=2Efreebsd=2Edk=3E=3B_fro?= =?iso-8859-1?Q?m_S=F8ren_Schmidt_on_Sat=2C_Sep_06=2C_1997_at_11=3A40=3A2?= =?iso-8859-1?Q?4PM_%2B0200?=
References:  <199709061909.VAA25891@kairos> <199709062140.XAA07333@sos.freebsd.dk>

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According to Søren Schmidt:
> as bad as people think. The only advantage with SCSI these days
> seems to be the ability to add more than 4 devices easily, and
> to add them externally of the machine. 

Even if it is now the only advantage, it is still one hell of a big one.
Until recently I'd 6 disks, 2 streamer/DAT and one CD-ROM on 2 controllers
with still 5 ID to put things on. Now I removed 2 small disks to make some
room after putting my ASUS PCI-875 in place...

ncr0:
T:L  Vendor   Device           Rev  Speed   Max  Wide Tags
0:0  IBM      DCAS-34330W      S65A 200.0   20.0  16    8
2:0  IBM      DORS-32160       WA6A 200.0   20.0   8    8
4:0  TANDBERG  TDC 3600        =08:     ?   20.0   ?    -

ncr1:
T:L  Vendor   Device           Rev  Speed   Max  Wide Tags
1:0  MICROP   1624-07MZ1077801 HZ2P 100.0   10.0   8    8
2:0  CONNER   CFP1080S         3939 100.0   10.0   8    8
5:0  HP       HP35480A         1009  50.0   10.0   8    -
6:0  MATSHITA CD-ROM CR-8004   1.1f  19.0   10.0   8    -

> But then again you have to pay solid bucks to get that :)

At 80 US$ for a SC-200 (NCR-810) and 140 US$ for a PCI-875 Ultra Wide card
(in France), that's not too hard. The IDE disks are cheaper that's right
but still won't allow crappy interfaces anywhere near my machine :-)
-- 
Ollivier ROBERT -=- FreeBSD: There are no limits -=- roberto@keltia.freenix.fr
FreeBSD keltia.freenix.fr 3.0-CURRENT #29: Tue Aug 26 21:05:09 CEST 1997



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