subject: All About Data Centers [print this page] Data Center is an essential component of a computer system and also its most vulnerable. It is placed on the premises of the companies that provide data center colocation or dedicated server hosting. To put it simply, the data center (for large-scale dedicated server colocation or one intended for a small or individual business) is the place where a computer network's essential systems, like backup power provisions, security equipments and air conditioning are kept. We're referring to a lot of data here, stored in lots of computers.