Which is cool, but an earthquake will damage the infrastructure connecting the cooling plant, the data lines, etc. Since physical access requires 100m of underground transit, I can't imagine how much reinforcement you'd need to ensure access in the event of a 6.7 earthquake.
The thing that scares me is $405MM for 10,000 server cores. At $5,000 per server core the cost $50MM. Assuming 7 racks for 250 servers = 28 racks. Generously, 28 racks needs 100 sq ft per rack (including cooling equipment though strictly speaking not necessary since they aren't including that space in their math) =~30,000 sq ft. At a high-end, data center construction cost of $1000 psf = $30MM construction costs.
So from my math, assuming $20MM to acquire 30,000 sq ft (or each 30,000 sq ft), you are at $100MM (on the wildest most outside math). If you park $300MM in a 4% US treasury note, you get $12MM a year rebated against your energy costs.
Where is the improvement here? Hell, who is the knucklehead who approved the $405MM to spend on this???
As another datacenter efficiency advocate, I've been looking for references of using natural (low temperature) water for free-cooling. Is there a place/consultancy/resource to look up figures like this? -- e.g. 30MW of cooling with 60F water ~flow rate of 13,650gpm -- without chillers?
Thanks in advance!
FF
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Which is cool, but an earthquake will damage the infrastructure connecting the cooling plant, the data lines, etc. Since physical access requires 100m of underground transit, I can't imagine how much reinforcement you'd need to ensure access in the event of a 6.7 earthquake. The thing that scares me is $405MM for 10,000 server cores. At $5,000 per server core the cost $50MM. Assuming 7 racks for 250 servers = 28 racks. Generously, 28 racks needs 100 sq ft per rack (including cooling equipment though strictly speaking not necessary since they aren't including that space in their math) =~30,000 sq ft. At a high-end, data center construction cost of $1000 psf = $30MM construction costs. So from my math, assuming $20MM to acquire 30,000 sq ft (or each 30,000 sq ft), you are at $100MM (on the wildest most outside math). If you park $300MM in a 4% US treasury note, you get $12MM a year rebated against your energy costs. Where is the improvement here? Hell, who is the knucklehead who approved the $405MM to spend on this???
As another datacenter efficiency advocate, I've been looking for references of using natural (low temperature) water for free-cooling. Is there a place/consultancy/resource to look up figures like this? -- e.g. 30MW of cooling with 60F water ~flow rate of 13,650gpm -- without chillers? Thanks in advance! FF