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From: sralston@srwic.UUCP (Steve Ralston)
Newsgroups: comp.unix.sysv386,comp.periphs.scsi
Subject: Re: QIC-nn tape formats -- standardization???
Keywords: SCSI
Message-ID: <202@srwic.UUCP>
Date: 2 Jan 91 08:50:50 GMT
References: <29008@usc> <2734@sixhub.UUCP> <2778D4B0.39B9@telly.on.ca> <1990Dec30.081357.377@chinet.chi.il.us> <1990Dec30.204604.14970@nstar.rn.com>
Followup-To: comp.unix.sysv386
Organization: Steve Ralston   Wichita, KS
Lines: 28

In article <1990Dec30.204604.14970@nstar.rn.com> larry@nstar.rn.com (Larry Snyder) writes:
>I wonder if Interactive Unix would support multiple SCSI tape drives -
>say a 2150S along with a 60 meg streamer - on one system using the
>same 1542b controller?

I don't know about ISC, but I have tested up to seven SCSI devices
(concurrently!) on SCO UNIX systems (4 disks + 3 tapes, & 3 disks + 4 tapes).

It's pretty awesome to watch all those SCSI access lights blinking across
seven devices!  You can't do much *else* with the system, once you fire up
all that I/O, but quite impressive, none the less.

FYI: For the curious, testing was performed on NCR PC's (microchannel) with
NCR SCSI host adapters running a port of SCO UNIX w/ NCR Common SCSI drivers.
Though we didn't test the same configuration on stock SCO UNIX with Adaptec
154x/164x SCSI host adapters, it should [theoretically] work, as well.  That's
what SCSI is all about!

Disk/Tape hardware was a combination of:  (all SCSI devices, of course)

	Disks: Seagate WREN IV 380 Mb (FH), Seagate WREN VI 380 Mb (HH),
	       Maxtor 8760S 760 Mb (FH), Seagate WREN VII 1.2 Gb (FH)
	Tapes: Archive Viper 150 Mb QIC (HH), Wangtek 525 Mb QIC (HH),
	       Exabyte 2.3 Gb 8mm (FH)
-- 
Steve Ralston						sralston@srwic.UUCP
235 N Zelta						voice: 316-686-2019
Wichita, KS 67206			..!uunet!ncrlnk!ncrwic!srwic!sralston