Each data center has emergency back-up generators, which are capable of powering the data centers in the event of a power failure.
Data centers are connected to the internet via high-speed fibre optic cable, with multiple redundant connections to provide access to the data center in the event of the failure of a single connection.
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Sonja Thompson has worked for TechRepublic since October of 1999. She is currently a Senior Editor and the host of the several blogs.