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How much power do older mainframes need (if they're actually even run)? (lemmy.world)

submitted 9 months ago* (last edited 9 months ago) by ShittyBeatlesFCPres@lemmy.world to c/technology@lemmy.world

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I’ve never worked with major enterprise or government systems where there’s aging mainframes — the type that get parodied for running COBOL. So, I’m completely ignorant, although fascinated. Are they power hogs? Are they wildly cheap to run? Are they even run as they were back in the day?

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[–] neidu2@feddit.nl 4 points 9 months ago* (last edited 9 months ago)

Kind of "older", i guess.. the ones I have at work are from 2017. 36 10TB 3.5" harddrives being the main power hog. Each server eats around 1.2kW. Each storage cluster holds four of these servers for a total of 1.2PB of storage space. The entire cluster is powered by a 5kVA UPS.

Quite power hungry, but pretty lean when compared to other methods for running that sort of storage.