Date: Wed, 24 Oct 2007 10:46:14 +0100 From: Tom Judge <tom@tomjudge.com> To: Gary Palmer <gpalmer@freebsd.org> Cc: freebsd-isp@freebsd.org Subject: Re: Backups Hardwares for FreeBSD Message-ID: <471F1466.6020301@tomjudge.com> In-Reply-To: <20071023212437.GA3356@in-addr.com> References: <471E2290.9040704@nlink.com.br> <200710231338.21368.fjwcash%2Bfreebsd@gmail.com> <20071023212437.GA3356@in-addr.com>
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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
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