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From: Tomoo Nomura <nomura@psn.or.jp>
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Ultra Widw SCSI Disk
Date: Sun, 23 Mar 1997 03:08:59 +0900
Organization: Nomura Technical Management Office Ltd.
Lines: 36
Message-ID: <3334203B.479A@psn.or.jp>
References: <332BECF2.40B3@psn.or.jp> <5gmvbk$f2j@news.scruz.net>
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Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:37575
Tom Cumming wrote:
>
> In article <332BECF2.40B3@psn.or.jp>, nomura@psn.or.jp says...
> >
> >Hello,
> >
> >FreeBSD 2.1.5 supports Ultra wide SCSI disks ?
>
> I am using an adaptec 2940UW and running fine. The default is
> *not* "Ultra". You have to go into the board configuration menus
> and enable it.
I checked and confirmed it was set as 20MB/sec ULTRA.
> >sd1(ncr0:6:0): FAST SCSI-2 100ns (10 Mb/sec) offset 8.
> >4157MB (8515173 512 byte sectors)
>
> Well... 100ns / second is 10Meg *transfers* per second. On a wide
> buss that's 20Meg *bytes* per second. The message above messages is
> misleading.
The problem is that the tranfer rate of ULTRA should be 20Meg. Wide
buss should be another 20Meg, so that Ultra Wide should be 40Meg.
Above message does not shows ULTRA but SCSI-2.
Tomoo
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