Date: Tue, 26 May 2009 19:38:29 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: Gary Gatten <Ggatten@waddell.com> Cc: freebsd-questions@freebsd.org Subject: Re: FreeBSD & Software RAID Message-ID: <4A1C3725.8040509@infracaninophile.co.uk> In-Reply-To: <70C0964126D66F458E688618E1CD008A0793ED91@WADPEXV0.waddell.com> References: <4A1AA3DC.5020300@network-i.net> <200905261238.52979.kirk@strauser.com> <70C0964126D66F458E688618E1CD008A0793ED91@WADPEXV0.waddell.com>
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Gary Gatten wrote:
> Why avoid ZFS on x86?
Because in order to deal most effectively with disk arrays of 100s or 1000s
of GB as are typical nowadays, ZFS requires more than the 4GB of addressable
RAM[*] that the i386 arch can provide.
You can make ZFS work on i386, but it requires very careful tuning and is not
going to work brilliantly well for particularly large or high-throughput
filesystems.
Cheers,
Matthew
[*] Technically, it requires more than the typical 2GB of kernel memory that
is the default on i386. KVM under 64bit architectures can be *much* bigger
than that.
--
Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard
Flat 3
PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
Kent, CT11 9PW
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