Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!mcdchg!ddsw1!karl
From: karl@ddsw1.MCS.COM (Karl Denninger)
Newsgroups: comp.unix.i386
Subject: Re: SCSI and 386/ix
Summary: That actually does work quite well
Keywords: scsi 9380s under 386/ix
Message-ID: <1990Feb3.191842.1991@ddsw1.MCS.COM>
Date: 3 Feb 90 19:18:42 GMT
References: <25c1fdd8:490comp.unix.i386@nstar.UUCP> <PCG.90Jan31144941@rupert.c <25c77e8b:490.5comp.unix.i386;1@nstar.UUCP>
Reply-To: karl@mcs.MCS.COM (Karl Denninger)
Organization: Macro Computer Solutions, Inc. - Mundelein, IL
Lines: 20

In article <25c77e8b:490.5comp.unix.i386;1@nstar.UUCP> larry@nstar.UUCP (Larry Snyder) writes:
>>The real win is with *two* SCSI drives; while an RLL controller
>>usually is WD1003 compatible, and thus cannot possibly support
>>overlapped seeks or transfers, the ACB 1542 will support these,
>
>How about getting 2 2372B RLL controllers each controlling 1 drive?
>Wouldn't this have the same effect as two SCSI drives on the 1542?

That actually does work quite well.

Even with ONE controller, it's not bad.  ISC >will< overlap seeks to the two
devices, IF your controller can handle it.  If not, you have to turn off
that feature in the space.c file for the device (it's on by default); this
is the cause of some problmes with certain revisions of the WD1006 boards.

--
Karl Denninger (karl@ddsw1.MCS.COM, <well-connected>!ddsw1!karl)
Public Access Data Line: [+1 708 566-8911], Voice: [+1 708 566-8910]
Macro Computer Solutions, Inc.		"Quality Solutions at a Fair Price"