Date: Mon, 20 Jul 1998 16:52:28 +0200 (MET DST) From: Willem Jan Withagen <wjw@surf.IAE.nl> To: cdillon@wolves.k12.mo.us Cc: scsi@FreeBSD.ORG Subject: Re: IBM DCAS Message-ID: <199807201452.QAA01705@surf.IAE.nl> In-Reply-To: <Pine.BSF.3.96.980719181331.18742A-100000@duey.hs.wolves.k12.mo.us> References: <19980719222526.A25289@mi.uni-koeln.de>
next in thread | previous in thread | raw e-mail | index | archive | help
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. --WjW -- Internet Access Eindhoven BV., voice: +31-40-2 393 393, data: +31-40-2 606 606 P.O. 928, 5600 AX Eindhoven, The Netherlands Full Internet connectivity for only fl 12.95 a month. Call now, and login as 'new'. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199807201452.QAA01705>