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 100=
0s
of GB as are typical nowadays, ZFS requires more than the 4GB of addressa=
ble
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 t=
hat
is the default on i386. KVM under 64bit architectures can be *much* bigg=
er
than that.
--=20
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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