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Article View: comp.sys.ibm.pc.hardware.storage
Article #139

Re: Dual SCSI controller problem

#139
From: Eric Decker
Date: Sat, 09 Dec 1995 21:46
36 lines
1586 bytes
>In an attempt to get faster backups, I moved the hard disk to
>controller B (which has internal connection only.)

>Everything works fine under DOS, but when I bring up w4wg 3.11,
>I get the message the file KRNL386.EXE could not be found.
>Using DOS to examine the directory c:\win\system, the file is there.
>
>If I revert to the original setup, w4wg works fine again.
>
>Has anybody seen this before? . . . or have any ideas?

Probably a quirk of DOS expecting the boot device to be on the default, 
Controller 
A, SCSI bus.

 Switch the HD to A, put whatever you can on B. An adapter to convert the 
internal 
port of Controller B to external use might well be worth it.  Running a 
streaming 
tape drive on a second scsi bus is good, especially on those long tape spool 
operations. Using a dual processor twin channel HA is one slot better than 
using 
two HA.  Use of a twin channel card without the actual dual processors will 
not 
gain as much performance.

AdvanSys has a series of twin channel cards which offer twin 50 MHZ 
processors.  

 I reckon NT would be plenty swift if stripped across two, three or even four 
EISA or PCI controllers.  I'd stick with the EISA, for now,  to increase the 
reliability factor.


Eric
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Message-ID: <091295.21460378075.n@frontier.canrem.com>
Path: arc1-ca.pugleaf.net!news.crso.com!edecker

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Path: arc1-ca.pugleaf.net!news.crso.com!edecker
From: Eric Decker <edecker@frontier.canrem.com>
Organization: CRS Online's Frontier
Subject: Re: Dual SCSI controller problem
Message-ID: <091295.21460378075.n@frontier.canrem.com>
Date: 09 Dec 1995 21:46:03 GMT
Newsgroups: comp.sys.ibm.pc.hardware.storage,comp.periphs.scsi