From owner-freebsd-hardware Fri May 28 4:21:53 1999 Delivered-To: freebsd-hardware@freebsd.org Received: from gate2.consol.de (gate2.consol.de [194.221.87.12]) by hub.freebsd.org (Postfix) with ESMTP id 1B2DF15124 for ; Fri, 28 May 1999 04:21:49 -0700 (PDT) (envelope-from Michael.Elbel@consol.de) X-Envelope-Sender-Is: Michael.Elbel@consol.de (at relayer gate2.consol.de) Received: from msgsrv.bb.consol.de (root@msgsrv.bb.consol.de [10.250.0.100]) by gate2.consol.de (8.9.1a/8.9.1) with ESMTP id NAA18331 for ; Fri, 28 May 1999 13:21:48 +0200 (CEST) Received: from fourier.int.consol.de (fourier.int.consol.de [10.0.1.17]) by msgsrv.bb.consol.de (8.8.8/8.8.8) with ESMTP id NAA08621 for ; Fri, 28 May 1999 13:21:08 +0200 Received: (from me@localhost) by fourier.int.consol.de (8.9.3/8.8.7) id NAA75313 for hardware@freebsd.org; Fri, 28 May 1999 13:21:07 +0200 (CEST) (envelope-from me) Date: Fri, 28 May 1999 13:21:07 +0200 From: Michael Elbel To: hardware@freebsd.org Subject: Re: Support for Symbios vs. Adaptect SCSI Message-ID: <19990528132105.C70791@consol.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.5i Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org In lists.freebsd.hardware you write: >You recently made the following remark on freebsd-hardware: >> The Adaptec chips are generally better supported in >> FreeBSD and I wouldn't consider anything else for systems that I build. [...] >Do you mean: > 1) Has fewer bugs? > 2) Makes better use of the hardware capabilities? > 3) Has a maintainer who is willing/able to devote > more time to the task? >Are there specific deficiencies in the drivers for the Symbios cards >that cause you to recommend against them? In that vein a question: Has anybody managed to use either a DDS Drive (I have tried Sony and HP) and/or a CD changer (I tried a NAKAMICH MJ-5.16S) with *any* Adaptec PCI controller without having to disable disconnect/reconnect in the adapter setup for those targets? I've tried to no avail, the system didn't even get up to the boot prompt in most of the cases/combinations I've tried so far which leads me to guess at problems with the Adaptecs themselves rather than the FreeBSD drivers. Disabling disconnect/reconnect stops the hangs but then one has a blocked SCSI bus while one of those devices does any operation. This can get quite annoying if e.g. a CD gets changed, causing a 5 second block on all disk activity :-( On the other hand, each and every NCR/Symbios controller I've used supported all devices with disconnect/reconnect enabled just fine. These days I hang the disks on Adaptecs and put slow devices on a separate Symbios if I get the chance. Michael -- \|/ -O- Michael Elbel, ConSol* GmbH, - me@consol.de - 089 / 45841-256 /|\ Fermentation fault (coors dumped) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message