Date: Mon, 20 Jul 1998 12:15:32 -0500 (CDT) From: Chris Dillon <cdillon@wolves.k12.mo.us> To: Willem Jan Withagen <wjw@surf.IAE.nl> Cc: scsi@FreeBSD.ORG Subject: Re: IBM DCAS Message-ID: <Pine.BSF.3.96.980720120950.21218B-100000@duey.hs.wolves.k12.mo.us> In-Reply-To: <199807201452.QAA01705@surf.IAE.nl>
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On Mon, 20 Jul 1998, Willem Jan Withagen wrote: > In article <Pine.BSF.3.96.980719181331.18742A-100000@duey.hs.wolves.k12.mo.us> you write: > >On Sun, 19 Jul 1998, Stefan Esser wrote: > > > >> On 1998-07-12 17:30 -0500, Chris Dillon <cdillon@wolves.k12.mo.us> wrote: > >> > > Negotiations may be started by both the drive or host adapter > >> > > at any time. But except for IBM, most vendors leave it up to > >> > > the host system to send the first message (which the driver > >> > > does after receiving the result of an INQUIRY command). > >> > > >> > Ok, makes sense.. I was just wondering. :-) > >> > > >> > And I guess that last part about IBM drives is a GoodThing? > >> > >> It doesn't really matter. The IBM driver have > >> other annoying firmware features (e.g. can't > >> deal with a "start motor" command in certain > >> situation where it could be considered a NOP), > >> and they sometimes drop the number of tagged > >> commands they can deal with for no apparent > >> reason. But I'm still thinking that the DDRS > >> is a rather good buy, currently ;-) > > > >I thought that tag problem was only with certain Quantum drives. :-) > >Well, these are DCAS drives, and have worked without a single hitch so > >far, but I wouldn't exactly say I put them under any major stress. > >Knock on wood. > > I currently run a rack of DCAS on an adaptec 2940UW without much of > a problem (until last night, which is most likely a temperature problem) > > (ahc0:14:0): "IBM DCAS-34330W S61A" > > I've created several CCD's and I'm trying to pound on them using bonnie, > iozone, and likes. > > Like I said, they ran for 4 days hammering without trouble, until > the summer started here in Holland. And my garage/office started to heat up. > > Now I've asked IBM what the latest firmware release for these drives was. > But untill now I've only received dumb, std answers. > Well, if you find a new firmware release because of some problem, please let me know. My controller every time at boot (and FreeBSD, at install-time), reports geometry problems and that "This will not work in OS other than DOS", and, well, it works just fine. :-) Flipping the "Support for drives >1GB" option and various other options didn't help, and I'm thinking maybe the drives themselves are reporting something odd. -- Chris Dillon - cdillon@wolves.k12.mo.us - cdillon@inter-linc.net /* FreeBSD: The fastest and most stable server OS on the planet. For Intel x86 and compatibles (SPARC and Alpha under development) (http://www.freebsd.org) */ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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