From owner-freebsd-isp@FreeBSD.ORG Wed Oct 24 10:18:00 2007 Return-Path: Delivered-To: freebsd-isp@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 93E4216A417; Wed, 24 Oct 2007 10:18:00 +0000 (UTC) (envelope-from tom@tomjudge.com) Received: from s200aog10.obsmtp.com (s200aog10.obsmtp.com [207.126.144.124]) by mx1.freebsd.org (Postfix) with SMTP id 93CC113C4AA; Wed, 24 Oct 2007 10:17:58 +0000 (UTC) (envelope-from tom@tomjudge.com) Received: from source ([217.206.187.80]) by eu1sys200aob010.postini.com ([207.126.147.11]) with SMTP; Wed, 24 Oct 2007 10:17:41 UTC Received: from [10.0.0.89] (bill.mintel.co.uk [10.0.0.89]) by rodney.mintel.co.uk (Postfix) with ESMTP id ED19D18142A; Wed, 24 Oct 2007 10:46:14 +0100 (BST) Message-ID: <471F1466.6020301@tomjudge.com> Date: Wed, 24 Oct 2007 10:46:14 +0100 From: Tom Judge User-Agent: Thunderbird 1.5.0.13 (X11/20070824) MIME-Version: 1.0 To: Gary Palmer References: <471E2290.9040704@nlink.com.br> <200710231338.21368.fjwcash+freebsd@gmail.com> <20071023212437.GA3356@in-addr.com> In-Reply-To: <20071023212437.GA3356@in-addr.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-isp@freebsd.org Subject: Re: Backups Hardwares for FreeBSD X-BeenThere: freebsd-isp@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Internet Services Providers List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Oct 2007 10:18:00 -0000 Gary Palmer wrote: > On Tue, Oct 23, 2007 at 01:38:21PM -0700, Freddie Cash wrote: >> On October 23, 2007 09:34 am Paulo Fragoso wrote: >>> We have a FreeBSD mail server with 1TB RAID 6 using Areca ARC-1220 >>> controler, all works fine. >>> >>> Today our backups are made on DDS-4 tapes, they are very slow and too >>> small, this is our problem. What is a good (modern) alternative to >>> DDS-4 working on FreeBSD? >> For our multi-TB systems, we do disk-based backups using dar ... to >> another multi-TB system. :) >> >> We use a custom shell script to handle creating full and incremental >> backups and to rotate through multiple directories to keep a couple >> backups around. All via gigabit ethernet and NFS. And once a week we >> copy a full backup offsite via SSH tunnels to another multi-TB system via >> a gigabit fibre link. >> >> We're using RAID5 with hot-spares on 3Ware 9550SX controllers. > > Hi, > > Any issues withe RAID5 sets on the 3Ware controllers? I've heard bad things > about RAID5 on older 3Ware controllers when a disk fails. Just wondering > if the situation is improved. > > Thanks, > > Gary There was a discussion about this recently on stable@ I think, but we run a large number of 3ware controllers (75xx, 9xxx, ranging from 4-12 channels). We have never had a problem recovering a 95xx array, however recovering a 75xx array has been difficult/impossible this is probably our fault for not setting up regular verifies to detect drives failing in areas not regularly used. Tom