Date: Mon, 20 Jul 2009 14:03:36 -0400 From: Tom Worster <fsb@thefsb.org> To: Maxim Khitrov <mkhitrov@gmail.com>, <mahlerrd@yahoo.com> Cc: Free BSD Questions list <freebsd-questions@freebsd.org> Subject: Re: ZFS or UFS for 4TB hardware RAID6? Message-ID: <C68A29B8.F4DE%fsb@thefsb.org> In-Reply-To: <26ddd1750907161512u109a4e49nc30ebc78bea5b8f@mail.gmail.com>
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On 7/16/09 6:12 PM, "Maxim Khitrov" <mkhitrov@gmail.com> wrote: >> >> I'd love to hear about any test results you may get comparing software with >> hardware raid. > > I received the hardware yesterday. There was a last minute change due > to cost. Instead of getting 4x 2TB drives I opted for 6x 1TB. This > limits my future expansion a bit, but that may be a few years down the > line. On the plus side, I can get the 4TB of RAID6 that I originally > planned for and the performance should be better because of additional > disks in the array. > > Sometime next week I'll install FreeBSD 8 and will then be able to run > a few benchmarks. After that I'll configure software RAID and repeat > the process. Are there any specific tests that you guys would like me > to run? Sequential read/write tests using dd are a given, beyond that > I'm not familiar with any ports under benchmarks/, so if you know of > anything good, tell me. sorry, i can't help. i've never done any benchmarking. if performance using zfs raid were good relative to using the dedicated raid controller then the possibility of improving system availability by eliminating that non-redundant sub-system might exist. unfortunately i don't think the comparison makes sense, at least with sas, because all the multi-port sas controller chips, iirc, are also raid controllers.
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