From owner-freebsd-scsi@FreeBSD.ORG Tue Jun 10 11:25:44 2003 Return-Path: Delivered-To: freebsd-scsi@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D12CE37B401; Tue, 10 Jun 2003 11:25:44 -0700 (PDT) Received: from bricore.com (adsl-64-168-71-68.dsl.snfc21.pacbell.net [64.168.71.68]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2ECF443F75; Tue, 10 Jun 2003 11:25:44 -0700 (PDT) (envelope-from lchen@briontech.com) Received: from lchenpc (lchen-pc.bricore.com [192.168.1.130]) by bricore.com (8.12.6/8.12.6) with SMTP id h5AIPfT3079495; Tue, 10 Jun 2003 11:25:42 -0700 (PDT) (envelope-from lchen@briontech.com) From: "Luoqi Chen" To: "Scott Long" Date: Tue, 10 Jun 2003 11:27:07 -0700 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Importance: Normal In-Reply-To: <3EE59CF9.1010809@freebsd.org> X-Virus-Scanned: by amavisd-milter (http://amavis.org/) cc: scsi@freebsd.org Subject: RE: 64-bit raid controller recommendation X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 10 Jun 2003 18:25:45 -0000 > Luoqi Chen wrote: > > Hi, > > > > I'm setting up a Supermicro 7043P-8R box with 8G of memory and > > I've just found out that the Adaptec 2010S ZCR card didn't support > > 64-bit addressing (being i2o based). So I'm looking for a card > > that could directly (no bouncing) address at least 8G physical > > memory, does anyone have any recommendation? > > > > It's hard to tell from the asr driver where the 32-bit limitation > comes from and/or if there is a way to fix it. To directly answer > your question, the Adaptec aac cards and driver support 64-bit > addressing with no bouncing. This includes the 5400, 2120, and 2200 > cards. > > Scott > The 32-bit limitation seems to come from the i2o architecture. I've checked with the linux driver, there's no 64-bit support either. The telltale sign is in the marketing literature it is NOT mentioned as IA-64 ready. The Adaptec 2200 sounds like a good fit for my need. How complete is the 64-bit support? Do you have any plan to back port it to -stable? (In)Stability makes me reluctant to install 5.x in a production system. I'm willing to do the back-porting if you don't have time. I've already done quite a few back-porting to be able to use 8G of memory. Thanks -lq