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From: root@conexch.UUCP (Larry Dighera)
Newsgroups: comp.unix.xenix
Subject: Two HD controllers (Was: Re: Xenix device drivers under Unix)
Summary: Can you mix ESDI and RLL controllers?
Message-ID: <37102@conexch.UUCP>
Date: 15 Sep 89 14:24:31 GMT
References: <4552@cps3xx.UUCP> <56d2.250eedb5@ibmpcug.co.uk>
Reply-To: root@conexch.UUCP (Larry Dighera)
Organization: The Consultants' Exchange, Orange County, CA.  (714) 842-6348
Lines: 30

In article <56d2.250eedb5@ibmpcug.co.uk> ronald@ibmpcug.co.uk (Ronald Khoo) writes:
[...]
<Under SCO Xenix 2.3.1 and later, you can even have 2 controllers,
<and this makes things go *really fast*  I am using 2 WD1007A ESDI
<controllers, with one disc on each, and am getting terrific I/O
<performance from the machine.  And yes, one of the discs has 1224 cylinders
<which I had no problem with even when I was using Xenix 2.2.3 last week.
<
<But there's no doubt that adding the second controller is definitely
<a worthwhile investment--for an application mix which is mostly
<disc bound, meaning anything not development or CAD oriented, really,
<it actually effectively doubles the number of users you can support!
<
<-- 
<Ronald.Khoo@ibmpcug.CO.UK (The IBM PC User Group, PO Box 360, Harrow HA1 4LQ)
<Path: ...!ukc!slxsys!ibmpcug!ronald Phone: +44-1-863 1191 Fax: +44-1-863 6095
<$Header: /users/ronald/.signature,v 1.1 89/09/03 23:36:16 ronald Exp $ :-)

Does anyone know if it is possible to use two hard disk controllers under
Xenix 386 2.3.0 when one is a WD1007-WA2 (ESDI) and the other a WD1006-WA2
(RLL/MFM)?  Is it necessary to run a specific ESDI release of Xenix or
install one of SCO's patches to use ESDI drives?

Larry Dighera

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