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  Datacenters, a visit to Telecity 
  Mar 11, 2003, 08:30am EST 

Power Delivery, UPS

By: Sander Sassen

The key ingredient to keeping all those servers up and running obviously is power delivery. The TeleCity datacenter we visited has up to 4Megawatt of power coming into the facility from the power grid whereas thereís two diesel power generators with a total capacity of 3.7Megawatt available that have enough diesel fuel to last for 24 hours. Thereís also a no-break battery backup, or rather UPS, thatíll bridge the gap between the power grid going offline and the diesel-generators starting up. Naturally these installations are tested on a regular basis to make sure that when push comes to shove, a failure of the power grid, things indeed go as planned and all of the servers keep on running.

Power from power grid

Fig 1. A look at the power switchboard at the TeleCity datacenter in Amsterdam South-East.

Battery Backup

Fig 2. A look into the battery room, many lead-acid batteries are combined to power the UPS.

1. Introduction
2. Power Delivery, UPS
3. Airconditioning, Fire-control
4. Security, Nxs Internet
5. Summary

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