Date: Mon, 21 Mar 2011 17:05:23 -0700 From: Rumen Telbizov <telbizov@gmail.com> To: Dmitry Morozovsky <marck@rinet.ru> Cc: freebsd-stable@freebsd.org Subject: Re: SAS HBA LSI 9200-8e supported under 8.2? Message-ID: <AANLkTimhXLQDCtCsWRqndvX4t5efQc2qN%2BUps1D3cCZL@mail.gmail.com> In-Reply-To: <alpine.BSF.2.00.1103220204340.39592@woozle.rinet.ru> References: <1300618959.2191.5.camel@netti> <AANLkTi=8%2BrM9CJUd2ACB8U1QA9LzBwcwBLg0LjAwOTpH@mail.gmail.com> <1300696385.16912.5.camel@pcdenny> <alpine.BSF.2.00.1103220204340.39592@woozle.rinet.ru>
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> > Booting from mps (while I had to set up gmirror, as only 12 disks are > exported > to BIOS, hence very large raidz's are not allowed to boot from) was not a > problem either. What I did into my 48 disk machine was - create a separate 'zroot' pool comprising of 20G gpt partitions carved of off 8 of those 48 disks in mirror (yeah paranoia!!!) and boot of them. It works nice since I don't waste too much space since it's a partition and gives me a lot of redundancy. What I have is simply the first vdev consisting of partitions that are 20G smaller compared to the rest of the vdevs. All those were organized in raidz2 = 6 x 8disks. Anyway ... something to consider in the cases when you don't have or you don't want to have a dedicated bunch of disks for the operating system. Cheers -- Rumen Telbizov http://telbizov.com
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