Date: Mon, 25 Nov 1996 17:36:51 -0800 (PST) From: "Rodney W. Grimes" <rgrimes@GndRsh.aac.dev.com> To: bminazzi@w3page.com (Blaine Minazzi) Cc: isp@FreeBSD.ORG Subject: Re: Newsserver running NCR815 cards Message-ID: <199611260136.RAA04351@GndRsh.aac.dev.com> In-Reply-To: <329A1EA6.2EA07EF4@w3page.com> from Blaine Minazzi at "Nov 25, 96 03:33:10 pm"
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> Joe Greco wrote: > > > > > > 6: Spending a couple extra bucks for better drives will fix problem and > > > > also get you tagged queueing if you usr NCR controllers. Better fix. > > > > > > My drives are fast and reliable - They dont work with NCR under FreeBSD. > > > > But the question is WHY? > > > > > The drives are 3 GB DEC Drives (aka Micropolis OEM), so I would rather buy > > > AHA2940s than tossing out 12 of these drives :):) > > > > Well, sure, but it would be nice to see if there isn't something that could > > be done to fix the problem. But first it needs to be determined.. > > Thats true... Have to determine where the problem is. Until then, many > of us have to use an Adaptec, or some other card. This is a ``heads up warning'' from the AAI test labs. The new Quantum Atlas-II drives (specifically the QM34550AL-S model) has abismal performance when talking to an NCR 53C810 under 2.1.6 (<3MB/sec read and write). The drive kicks some serious bytes when talking to an AHA2940U in the same system (>9MB/sec in fast scsi-ii mode, >11MB/sec in Ultra mode). The current status of the NCR problem is ``Quantum's compatibility lab has been handed the open trouble report, and an engineer will be getting back to you''. Anyone else out there playing with one of the new Atlas-II drives that has any data about it, good or bad, please contact me. Especially if you see numbers >3MB/sec on an NCR based controller running _ANY_ OS on any hardware, or anyone seeing <3MB/sec with something other than an NCR controller chip. -- Rod Grimes rgrimes@gndrsh.aac.dev.com Accurate Automation, Inc. Reliable computers for FreeBSD
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