[conspire] Another low-power server
Luke S Crawford
lsc at prgmr.com
Wed Oct 7 18:16:37 PDT 2009
Rick Moen <rick at linuxmafia.com> writes:
> Anyhow, I remember that one customer wanted rackmount clusters of those
> puppies, and it turned out that a full-sized floor-mounted rack of 45(?)
> of those units drew more power than could be delivered by any of their
> electrical circuits.
> And the thing is, hardly anyone seemed to care. The physical inability
> to power a full-sized rack of them was widely seen as an unfortunate
> inconvenience, rather than a sign that burning that much power might be
> A Bad Thing that might be worth avoiding.
Heh. Yeah, my rack is built 'as I go' The thing is, if I can keep
capacity up, hardware pays for itself in the first month due to 3,
6, and 12 month prepayments. But I don't have the cash about to buy
a rack worth of hardware at once. The thing is, I'm cheap, so things
like chassis are 'catch as catch can' - I found a deal on these nice 3u
supermicros I ended up paying under $150 each with hot swap backplanes,
so I use a lot of them. But sometimes I find I have the rack almost
full and still haven't squeezed 75% out of my 2x 20a circuts. In
those cases I use one of the supermicro 2 in 1u chassis -
Now, if I wasn't super cheap I'd use 1u supermicros, but the 1u
dual socket f superservers run around $700 each new, and
the 2 in 1u superservers, also dual socket f run around $1000,
and that gets me 2 servers.
> I'm certainly interested in these ARM--based options, especially the
> ones able to support a reasonable amount of RAM, and able to mount a
> mirrored pair of hi-speed or "SuperSpeed" USB drives, so you're not
> limited to Flash. However, doing without floating point (thus, painful
> SSL/ssh) seems a high price to pay.
Hm. I thought the new ARMs had a FPU. the OMAP stuff? It's not
really my area, I just hear chatter about it because it is Sarah's.
I have a opengear brand 48 port serial console server that I access
via ssh, and it is rather slow, but not unusable. the slowness is
only a problem when you connect (or, I imagine, if you were trying
to copy files over ssh) - once you are connected, it is plenty
> > These would also be good for things like kerberos servers.
> With ARM CPUs and thus no FPUs? Really?
Most kerberos servers have low cpu requirements. (I mean, they need
to respond quickly, but hardware from the mid-90s seemed to get the job
done just fine. I don't know how an arm would compare to a mid-90s cpu,
honestly, but I'd risk $100 to find out.)
I've actually got a shevaplug right now... the thing is, the plug
form factor is kinda dumb for the data center, and it lacks
a serial console.
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