Date: Wed, 23 Sep 2009 19:45:27 +0200 From: Oliver Lehmann <oliver@FreeBSD.org> To: Freddie Cash <fjwcash@gmail.com> Cc: freebsd-performance@freebsd.org Subject: Re: gjournal, hardware raid, software raid Message-ID: <20090923194527.0b3cfbb2.oliver@FreeBSD.org> In-Reply-To: <b269bc570909231007g6dd6219dm6c3e5d69304872b0@mail.gmail.com> References: <20090923180347.ee0ae193.oliver@FreeBSD.org> <b269bc570909231007g6dd6219dm6c3e5d69304872b0@mail.gmail.com>
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Freddie Cash wrote: > I've never done anything with gjournal, so can't really comment on what > would be the better setup for it. However, I would like to point out that > there's a fourth option: > - configure the RAID controller to use 4 Single Disk arrays (or JBOD, not > sure when 3Ware added Single Disk support) > - use ZFS to create a raidz dataset using the 4 drives Uh... Ok, this might be an option generally but honestly not for me ;) Considering the money I've spent 3 years ago for buying the RAID controller and considering the load it takes from the system handling the RAID I think it is in the best interest for the system to keep the RAID-5 3ware internally. As you might have seen the system is not the fastest one with not that much of memory - so whatever load I can delegate I'm try to delegate off the CPUs. Today I would probably not spend the money buying a RAID controller again but use indeed ZFS instead. But back the time there was only (g)vinum - and I never liked it. -- Oliver Lehmann http://www.pofo.de/ http://wishlist.ans-netz.de/
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