From owner-freebsd-hardware Thu Aug 22 09:46:43 1996 Return-Path: owner-hardware Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id JAA27179 for hardware-outgoing; Thu, 22 Aug 1996 09:46:43 -0700 (PDT) Received: from MindBender.serv.net (root@mindbender.serv.net [205.153.153.98]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id JAA27098 for ; Thu, 22 Aug 1996 09:45:44 -0700 (PDT) Received: from localhost.HeadCandy.com (michaelv@localhost.HeadCandy.com [127.0.0.1]) by MindBender.serv.net (8.7.5/8.7.3) with SMTP id JAA23848; Thu, 22 Aug 1996 09:43:53 -0700 (PDT) Message-Id: <199608221643.JAA23848@MindBender.serv.net> X-Authentication-Warning: MindBender.serv.net: Host michaelv@localhost.HeadCandy.com [127.0.0.1] didn't use HELO protocol To: "Justin T. Gibbs" cc: Stefan Esser , "Rodney W. Grimes" , jas@flyingfox.com (Jim Shankland), freebsd-hardware@freebsd.org Subject: Re: SCSI again: Asus SC200 vs. Adaptec 2940 In-reply-to: Your message of Wed, 21 Aug 96 23:42:33 -0700. <199608220642.XAA20776@freefall.freebsd.org> Date: Thu, 22 Aug 1996 09:43:51 -0700 From: "Michael L. VanLoon" Sender: owner-hardware@freebsd.org X-Loop: FreeBSD.org Precedence: bulk >> > I don't know if the NCR has tagged-command-queuing support or not. If >> > it did, I don't think I would trust it (the NCR driver is OK for >> > workstation type stuff, as Justin pointed out, but it is known to be >> > buggier than either the BusLogic or Adaptec drivers). >That wasn't me who said that. I know there have been bugs in the past with >the NCR driver, but there have also been bugs in the aic7xxx driver too. I >have no idea of the current stability of the ncr driver since I don't own >one of those cards. It was *me* who said it. :-) I've personally had the NCR driver die rather predictably on a heavy-feed news server. This is why I don't quite trust it completely. Which is why I say it works fine on an "average" workstation, but it isn't quite industrial strength. On the other hand, that was many months ago, and it's possible those bugs have been fixed. For what it's worth, three of the machines I have at work (all Pentiums) have an NCR 53c8xx SCSI controller in them, running Windows NT. It holds up just fine when I abuse it there, so I'm sure it's not the controller itself. On the other other hand :-), I do believe I get better "high-load" performance from my one machine with the Adaptec 2940 in it, but that's also my fastest CPU. ----------------------------------------------------------------------------- Michael L. VanLoon michaelv@MindBender.serv.net --< Free your mind and your machine -- NetBSD free un*x >-- NetBSD working ports: 386+PC, Mac 68k, Amiga, Atari 68k, HP300, Sun3, Sun4/4c/4m, DEC MIPS, DEC Alpha, PC532, VAX, MVME68k, arm32... NetBSD ports in progress: PICA, others... -----------------------------------------------------------------------------