[ale] Linux Cluster Server Room
kaboom at gatech.edu
Mon Apr 12 16:44:51 EDT 2004
On Mon, 12 Apr 2004, Dow Hurst wrote:
> Thanks Jonathon! That is exactly the kind of ballpark I needed! I don't need
> the vendors right now as we are still kicking around ideas. If anyone would
> throw some specs or ideas out there, I'd appreciate it. Here is a quick
> question? Is planning for double your planned load a good rule? I would
> think that would be a good idea. How about backup cooling if the main unit
> dies? The firesafe is one I had not thought of.
Just to give you another price point to compare, we just spec'ed out getting
an additional 30 tons A/C (360,000 BTUs), and it's coming in at ~$100,000.
That's just for adding two more 15-ton units, as most of the other
infrastructure needed for that's already there....
As for how much backup you need, the way I'm guesstimating that is by
assuming a worst-case repair time and a maximum temperature I'm comfortable
with the room reaching. If you know your thermal load, you can figure out
from that how much backup you need to have around....
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