The most important part of any server room is, of course, the same servers. These are computers, whose task is to provide services to other computers (computers-clients). Typically, this task is handled with the provision of corporate resources - programs., Files and equipment - all computers connected to the network.

Because of the role remain, a key issue for the operation of servers is their reliability, because normally, instead of ordinary computers, the specialized workstations designed for continuous mode. They use a special SCSI hard drives, transfer and a higher capacity, more reliable memory with error correction code (ECC), and multiprocessor motherboards. Of course, the quality of these elements must be much higher than in the case of home desktop, and they must cooperate with each other perfectly, so the system integrator usually orders servers directly from one of the producers. They are more expensive to obey, but also much more reliable than PCs and checked-składaki. The latter are used in smaller serwerowniach, where reliability requirements are lower and financial capabilities - smaller.

One of the most important characteristics of the server - as in the case of UPS, redundancy, or redundancy. But in this case it can be understood in two ways. First, most of the factors used in servers is given in order to ensure the reliability of the entire system. This applies, above all, power systems and hard drives. In the former case, it is primarily to ensure bezprzerwowej work even in a situation where one ceases to operate with power supplies. Ghosts of hard drives for greatly affect the safety data.

In servers installs a special operating systems - better than the systems designed for home users, and to handle multiple services at once.