Date: Tue, 25 Nov 2008 16:09:14 -0900 From: Henrik Hudson <lists@rhavenn.net> To: freebsd-hackers@freebsd.org Subject: Re: Hot swapping SATA drives Message-ID: <20081126010914.GA30629@alucard.int.rhavenn.net> In-Reply-To: <2ACA3DE8F9758A48B8BE2C7A847F91F240CD9D@polaris.maxiscale.com> References: <2ACA3DE8F9758A48B8BE2C7A847F91F240CD5E@polaris.maxiscale.com> <200811250929.37929.fjwcash@gmail.com> <2ACA3DE8F9758A48B8BE2C7A847F91F240CD9D@polaris.maxiscale.com>
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On Tue, 25 Nov 2008, Peter Steele wrote: > >Use a real hot-swappable drive plane, attached to a good SATA > controller > >that handles hot-swap in hardware? :) > > > >Use ZFS, which seems to work better with drives being added/removed > than > >ata(4)? :) > > > >Sorry, the few systems we have running FreeBSD either have single IDE > >drives, single SATA drives, or 12-24 SATA drives attached to a hardware > > >hot-swappable drive-plane connected to 3Ware 9550/9650 RAID > controllers. > >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. I would think that if you're using a 3ware controller in JBOD and as stated are in AHCI mode that as long as the OS umounts the drive that you should be able to hot-swap. However, checking with 3ware is probably the best option :) Henrik -- Henrik Hudson lists@rhavenn.net
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