From owner-freebsd-stable@FreeBSD.ORG Fri Jan 6 04:08:12 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E8B4F16A41F for ; Fri, 6 Jan 2006 04:08:12 +0000 (GMT) (envelope-from cswiger@mac.com) Received: from pi.codefab.com (pi.codefab.com [199.103.21.227]) by mx1.FreeBSD.org (Postfix) with ESMTP id 627A343D5F for ; Fri, 6 Jan 2006 04:08:06 +0000 (GMT) (envelope-from cswiger@mac.com) Received: from localhost (localhost [127.0.0.1]) by pi.codefab.com (Postfix) with ESMTP id 83CFA5DE5; Thu, 5 Jan 2006 23:08:05 -0500 (EST) Received: from pi.codefab.com ([127.0.0.1]) by localhost (pi.codefab.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 00531-02; Thu, 5 Jan 2006 23:08:04 -0500 (EST) Received: from [192.168.1.3] (pool-68-161-122-227.ny325.east.verizon.net [68.161.122.227]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by pi.codefab.com (Postfix) with ESMTP id 07DB85DDA; Thu, 5 Jan 2006 23:08:03 -0500 (EST) Message-ID: <43BDED2E.7090803@mac.com> Date: Thu, 05 Jan 2006 23:08:14 -0500 From: Chuck Swiger Organization: The Courts of Chaos User-Agent: Mozilla Thunderbird 1.0.7 (Windows/20050923) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Vivek Khera References: <6CADC5BD-FBF5-472E-8087-8494AD03549C@khera.org> In-Reply-To: X-Enigmail-Version: 0.93.0.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: amavisd-new at codefab.com Cc: freebsd-stable Subject: Re: SCSI RAID card recommendation (1/2 height PCI-X U320 SCSI dual channel) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 06 Jan 2006 04:08:13 -0000 Vivek Khera wrote: [ ... ] > The only other aac controller I have is a Dell PERC type which is god- > awful slow, but I hear that's dell's fault not adaptec's. I don't know > what to believe there. That card is quite stable however. > > Any experiences with this that anyone wishes to share? There's an interesting thread about the AMR RAID controller used in the newer 18x0/28x0 Dells with the PERC/4 controller, and I know of enough people using them that such improvements (by Doug Ambrisko?) will be welcomed. If you've got the older PERC/3 AAC controller, it looks something like this: 6-pi# dmesg | grep aac aac0: mem 0xf0000000-0xf7ffffff irq 31 at device 2.1 on pci2 aac0: i960RX 100MHz, 118MB cache memory, optional battery present aac0: Kernel 2.5-0, Build 2991, S/N xxxxx aac0: Supported Options=0 aacd0: on aac0 aacd0: 17355MB (35544576 sectors) Mounting root from ufs:/dev/aacd0s1a 7-pi# diskinfo -v -t aacd0 aacd0 512 # sectorsize 18198822912 # mediasize in bytes (17G) 35544576 # mediasize in sectors 2212 # Cylinders according to firmware. 255 # Heads according to firmware. 63 # Sectors according to firmware. Seek times: Full stroke: 250 iter in 1.344172 sec = 5.377 msec Half stroke: 250 iter in 1.300260 sec = 5.201 msec Quarter stroke: 500 iter in 2.705104 sec = 5.410 msec Short forward: 400 iter in 2.605101 sec = 6.513 msec Short backward: 400 iter in 2.157570 sec = 5.394 msec Seq outer: 2048 iter in 0.954848 sec = 0.466 msec Seq inner: 2048 iter in 0.952256 sec = 0.465 msec Transfer rates: outside: 102400 kbytes in 3.248853 sec = 31519 kbytes/sec middle: 102400 kbytes in 3.174779 sec = 32254 kbytes/sec inside: 102400 kbytes in 4.612511 sec = 22200 kbytes/sec 8-pi# uname -a FreeBSD pi.codefab.com 5.4-STABLE FreeBSD 5.4-STABLE #0: Wed Nov 9 23:04:08 EST 2005 root@pi.codefab.com:/usr/obj/usr/src/sys/PI i386 ...set up as a RAID-1 mirror using a pair of 18 GB, hmm, 10K RPM Seagates, IIRC? Seems a bit slower under 5 than under 4, but not unreasonably so. -- -Chuck