From owner-freebsd-hardware Thu Feb 27 19:59:42 2003 Delivered-To: freebsd-hardware@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id CD32E37B401 for ; Thu, 27 Feb 2003 19:59:39 -0800 (PST) Received: from mx1.freebsdsystems.com (gw.tor.freebsdsystems.com [216.138.230.94]) by mx1.FreeBSD.org (Postfix) with ESMTP id AE78743F85 for ; Thu, 27 Feb 2003 19:59:36 -0800 (PST) (envelope-from lnb@freebsdsystems.com) Received: (qmail 44894 invoked by uid 89); 28 Feb 2003 03:59:35 -0000 Received: from unknown (HELO noemie) (192.168.0.2) by mx1.freebsdsystems.com with SMTP; 28 Feb 2003 03:59:35 -0000 Message-ID: <001c01c2dede$0a979f10$0200a8c0@noemie> From: "Lanny Baron" To: "charms" , , References: <20030227143521.4371.qmail@nym.alias.net> Subject: Re: ATA RAID Suggestions Date: Thu, 27 Feb 2003 23:01:15 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Have a look at http://www.FreeBSDsystems.com/servers_2140.html Lanny ----- Original Message ----- From: "charms" To: ; Sent: Thursday, February 27, 2003 9:35 AM Subject: Re: ATA RAID Suggestions > Geekazoid and Friends wrote: > > > I am looking for ATA RAID suggestions. I have tried a Promise FastTrak TX2000 > > with 2 Hot-Swap Trays. I receive an error message that the controller does not > > support the 'rebuild' feature of 'atacontrol'. > > > > So, my question is thus...Can anyone recommend a solid ATA RAID Controller that > > supports re-mirroring on the fly? Also, any recommendations about hot-swap > > trays/bays? > > > > Any assistance would be Greatly Appreciated! > > > > Just to be a pain, I am not subscribed to this list. :-| Could you please > > reply 'geeks@geekazoid.com'? > > I deploy a lot of FreeBSD platforms that use HighPoint HPT370 controllers > in an *unmirrored* configuration, for end-of-the-day backups. The HPT370 > allows me to reliably hot swap *identical* (i.e. ST3400021A) unmounted > drives using the following procedure: > > 1) power down a drive > 2) invoke > /sbin/sysctl -w hpt37x2.status="hpt rescan all" > to prod the kernel into realizing that a drive is down > 3) swap the drive > 4) power up a replacement drive > 5) invoke > /sbin/sysctl -w hpt37x2.status="hpt rescan all" > to prod the kernel into realizing that a drive is back on line > > Observation/question: > > 1. ATA gurus tell me that ATA detection magic only occurs during a > hard boot. Something beyond my comprehension prevents a PC from > recognizing an ATA drive with a different geometry "on the fly." > Therefore, I use drives with identical geometry for hot swaps. > > 2. So far, /sbin/sysctl only seems to work with HighPoint controllers. > Does anyone know of any other controller that can accommodate a > hot swap by using /sbin/sysctl? > > -- > charms > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hardware" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message