Linux as a NAS performance questions
Alex Hewitt
hewitt_tech at comcast.net
Thu Sep 17 20:21:59 EDT 2009
Drew Van Zandt wrote:
> That's basically what a Drobo
> (http://www.drobo.com/products/drobo.php) is, only they already
> considered all of those performance questions for you.
>
> --DTVZ
>
> On Thu, Sep 17, 2009 at 4:09 PM, Neil Joseph Schelly
> <neil at jenandneil.com <mailto:neil at jenandneil.com>> wrote:
>
> I'm looking to build a small Shuttle barebone machine into a NAS
> running
> Linux. The intent of the machine is to be a networked PC with lots of
> storage in a RAID array, made available over the gigabit network
> interface
> via Samba, NFS, and maybe iSCSI protocols. I'm curious what
> experience
> others have with this sort of stuff in general, but two immediate
> questions
> come to mind about processor and memory performance.
>
> I can go the low-power, low-heat route and get a single-core
> processor and a
> single memory stick of minimal quantity. Or I can upgrade a bit,
> get a
> dual-core processor with 2 sticks of dual-channel memory. Or
> something in
> between. What I don't know is how much impact processor speed,
> multiple
> cores, memory capacity, and dual-channel memory has on disk I/O,
> network I/O,
> software RAID processing, etc.
>
> I like the idea of a small low-power, low-heat appliance, but will
> going too
> low on those negatively impact performance much? The cost
> difference between
> a single-core processor with 1GB of memory and a dual-core
> processor with 2
> sticks of 1GB dual-channel memory is insignificant, so that's not
> much of a
> concern.
> -N
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There seem to be a lot of unhappy Drobo users if Newegg's customer
reviews are anything to go buy. Take a look here:
http://www.newegg.com/Product/Product.aspx?Item=N82E16822240010
I have learned the hard way to be very mindful of the customer reviews
on Newegg. If the unhappy customers get to the 20% or higher level you
need to make sure their complaints don't apply to your situation.
-Alex
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