Date: Thu, 27 Feb 2003 23:01:15 -0500 From: "Lanny Baron" <lnb@freebsdsystems.com> To: "charms" <charms@nym.alias.net>, <freebsd-hardware@FreeBSD.org>, <gaf@boywonder.geekazoid.com> Subject: Re: ATA RAID Suggestions Message-ID: <001c01c2dede$0a979f10$0200a8c0@noemie> References: <20030227143521.4371.qmail@nym.alias.net>
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Have a look at http://www.FreeBSDsystems.com/servers_2140.html Lanny ----- Original Message ----- From: "charms" <charms@nym.alias.net> To: <freebsd-hardware@FreeBSD.org>; <gaf@boywonder.geekazoid.com> 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
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