On Fri, 24 Jul 2009, Michael McCandless wrote:
> I've read in numerous threads that it's important to use ECC RAM in a
> ZFS file server.
>
> My question is: is there any technical reason, in ZFS's design, that
> makes it particularly important for ZFS to require ECC RAM?
[...]
> Some of the posts in this thread ("Another user loses his pool..."):
>
> http://opensolaris.org/jive/thread.jspa?threadID=108213&tstart=0
>
> make me think ZFS may in fact "require" ECC RAM.
I don't think it's ZFS per se that "requires" ECC RAM. More likely,
it's any application (in the use sense, not a program) that actually
cares about being able to detect--and preferably correct--errors in
memory.
Given that data integrity is presumably important in every non-gaming
computing use, I don't understand why people even consider not using
ECC RAM all the time. The hardware cost delta is a red herring: how
much would undetected memories cost an organisation? That's the true
cost of skimping on memory by using non-ECC RAM, IMHO.
HTH,
--
Rich Teer, SCSA, SCNA, SCSECA
URLs: http://www.rite-group.com/rich
http://www.linkedin.com/in/richteer
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