Date: Fri, 11 Oct 2013 09:21:12 +1300 From: Berend de Boer <berend@pobox.com> To: john@potato.growveg.org Cc: freebsd-fs@freebsd.org Subject: Re: RAM and zfs and multiple disks Message-ID: <87hacoubbb.wl%berend@pobox.com> In-Reply-To: <20131010170724.GA19751@potato.growveg.org> References: <20131010170724.GA19751@potato.growveg.org>
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>>>>> "John" == John <freebsd-lists@potato.growveg.org> writes:
John> Hello list, I'd like to have zfs on my freebsd
John> desktop. However, this motherboard can take 8GB RAM, max.
John> I'd like to get 2 x4Tb drives. Realistically, do I need
John> another motherboard? The primary reason to have ZFS is to
John> guard against bitrot.
By default ZFS takes most available memory, as it assumes it's an NFS
server. That can be easily tuned, see vfs.zfs.arc_max.
The main reason for a lot of memory is dedup. If you don't use it, I
would say you have plenty. Note you can enable dedup on selected
filesystems for ones where it makes sense.
--
All the best,
Berend de Boer
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