From owner-freebsd-hackers@FreeBSD.ORG Tue Nov 25 19:42:08 2008 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B5FE11065673 for ; Tue, 25 Nov 2008 19:42:08 +0000 (UTC) (envelope-from psteele@maxiscale.com) Received: from arcturus.maxiscale.com (arcturus.maxiscale.com [76.231.178.136]) by mx1.freebsd.org (Postfix) with ESMTP id 916F18FC17 for ; Tue, 25 Nov 2008 19:42:08 +0000 (UTC) (envelope-from psteele@maxiscale.com) X-ASG-Debug-ID: 1227642126-162200040000-P5m3U7 X-Barracuda-URL: http://10.100.1.25:8000/cgi-bin/mark.cgi Received: from polaris.maxiscale.com (localhost [127.0.0.1]) by arcturus.maxiscale.com (Spam Firewall) with ESMTP id 500DC30DBC for ; Tue, 25 Nov 2008 11:42:07 -0800 (PST) Received: from polaris.maxiscale.com (polaris.maxiscale.com [10.100.1.24]) by arcturus.maxiscale.com with ESMTP id AhBlsRCfK5feK8D5 for ; Tue, 25 Nov 2008 11:42:06 -0800 (PST) X-ASG-Whitelist: Client X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message X-ASG-Orig-Subj: RE: Hot swapping SATA drives MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Date: Tue, 25 Nov 2008 11:42:05 -0800 Message-ID: <2ACA3DE8F9758A48B8BE2C7A847F91F240CD9D@polaris.maxiscale.com> In-Reply-To: <200811250929.37929.fjwcash@gmail.com> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Hot swapping SATA drives Thread-Index: AclPI5uvjDuybpv4Q5eTy7lnw91/ewAEazWQ References: <2ACA3DE8F9758A48B8BE2C7A847F91F240CD5E@polaris.maxiscale.com> <200811250929.37929.fjwcash@gmail.com> From: "Peter Steele" To: X-Barracuda-Connect: polaris.maxiscale.com[10.100.1.24] X-Barracuda-Start-Time: 1227642127 X-Barracuda-Virus-Scanned: by Barracuda Spam Firewall at maxiscale.com Subject: RE: Hot swapping SATA drives X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 25 Nov 2008 19:42:08 -0000 >Use a real hot-swappable drive plane, attached to a good SATA controller=20 >that handles hot-swap in hardware? :) > >Use ZFS, which seems to work better with drives being added/removed than=20 >ata(4)? :) > >Sorry, the few systems we have running FreeBSD either have single IDE=20 >drives, single SATA drives, or 12-24 SATA drives attached to a hardware >hot-swappable drive-plane connected to 3Ware 9550/9650 RAID controllers. =20 >The single-drive systems obviously can't do swapping, and the rest work >without issues. I should further clarified that we are running 4-drive systems, with drive sizes ranging from 250GB-1TB. These drives are not in a RAID cluster and we do not want them to be. We do need the drives to be hot swappable though. I'll contact 3Ware and go from there. Thanks for the reply.