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In the event that power to the centre is cut off, backup power is provider via diesel generator sets.
The generators are kept warm in order to be ready to receive load within 45 seconds of a mains failure, well within the centre's 10-minute UPS supply time.
In the event of prolonged failure, the centre has three 60-kilolitre underground fuel storage tanks, which sit directly below the generators, and contracts with two vendors to deliver fuel within four hours.
The generators are run twice a month to ensure they are prepared for a mains failure; once to check operation and once under full load. Similar to what occurs annually at SY1 and SY2, Equinix will also put the centre under a "dark side" test during which they shut off the mains power, simulating a power failure to check that its UPS and generators are working correctly.