Date: Fri, 1 Aug 1997 01:23:34 -0400 (EDT) From: "Christopher R. Bowman" <crb@Glue.umd.edu> To: Michael Smith <msmith@atrad.adelaide.edu.au> Cc: "David E. Cross" <dec@phoenix.its.rpi.edu>, questions@FreeBSD.ORG, hardware@FreeBSD.ORG Subject: Re: SCSI Card to use. Message-ID: <Pine.SOL.3.95q.970801012004.5842A-100000@drpepper.eng.umd.edu> In-Reply-To: <199708010026.JAA00701@genesis.atrad.adelaide.edu.au>
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On Fri, 1 Aug 1997, Michael Smith wrote: > It's better to ask questions like this on -hardware rather than -hackers. > > David E. Cross stands accused of saying: > > I am looking to pick up a SCSI 3 Ultrawide card. I was looking at the > > Adaptec 2940 Ultrawide. Is there a better card to get, or one that has > > better support within the FreeBSD comunity? > > The Adaptec is about as good as they get, and the support is generally > very good (although the driver does go through patches of instability > when Adaptec make changes to their range or programming data). > > An alternative to be considered seriously is any card based on the NCR > 875 chip; see http://www.tekram.com for one such device. These cards > are _very_ well supported by FreeBSD, and the driver has been stable > for a long time now. > > > David Cross > > -- > ]] Mike Smith, Software Engineer msmith@gsoft.com.au [[ > ]] Genesis Software genesis@gsoft.com.au [[ > ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ > ]] realtime instrument control. (ph) +61-8-8267-3493 [[ > ]] Unix hardware collector. "Where are your PEZ?" The Tick [[ > would have made this suggestion myself, however I don't believe that the NCR driver is doing Ultra-Wide transactions yet is it? The probe of my IBM Ultrastar 2ES Ultra-Wide drive (included below) indicates that I am not getting these types of transfers with my 2.2.2 (from the CD) system. Thus I didn't suggest 875 based cards since the request asked for Ultrawide cards and though the my Tekram 390F is indeed an ultrawide 875 based card which I am QUITE hapy with, it is not doing Ultrawide transactions. Perhaps this is not the case with newer source(I don't know) but people should be aware of this before purchase. (ncr0:0:0): "IBM DCAS-32160W !# S63A" type 0 fixed SCSI 2 sd0(ncr0:0:0): Direct-Access sd0(ncr0:0:0): WIDE SCSI (16 bit) enabled sd0(ncr0:0:0): 20.0 MB/s (100 ns, offset 15) 2063MB (4226725 512 byte sectors) sd0(ncr0:0:0): with 8188 cyls, 3 heads, and an average 172 sectors/track --------- Christopher R. Bowman crb@Glue.umd.edu <A HREF="http://www.glue.umd.edu/~crb">My home page</A>
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