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I have not seen a lot of carrier equipment in the DC/CO rated to 55C. Optical transport nodes maybe but not the Switches and Routers and servers etc. Temp rat

I have not seen a lot of carrier equipment in the DC/CO rated to 55C. Optical transport nodes maybe but not the Switches and Routers and servers etc. Temp ratings like that are normal for field systems in passively cooled cabinet shelters or tower sites and Industrial Ethernet and CCTV camera housings etc are even built to handle 65C. The Uptime Tier-1/2/3/4 builds overcapacity redundancy into the cooling facility itself to avoid failures like this and I don't recall seeing anything NEBS related to go beyond that either. This looks like it was a matter of intake air/water to the cooling system going outside of design parameters so even with extra capacity they couldn't meet the t/h set points.

nsteel 4y ago
I think it very much depends on the equipment. I think we have multiple tiers of what we support at each type of facility, with traditional data centres having less stringent requirements (maybe w.r.t noise/filters rather than temp) compared to the facilities housing big routers where -5/55C is the spec to meet. You are right, and it's arguably harder for those smaller boxes sitting in cabinets / on telegraph poles, despite being much lower power systems to start with. It might be 50C+ in there before they even turn on! Those things might have a two-stage boot process where they just run their fans for a bit to cool things down before actually booting the main system. It must be a real nightmare for entirely passive stuff, I have no experience with that.