Perhaps the single largest difference between servers and desktops is in priorities. For power users the focus of their desktop is almost always on performance. More RAM, RAID 0 hard drive arrays, high end graphics accelerators, and overclocking are all attempts to try to push the envelope and get the most performance possible. For a server however, the key above anything else is reliability; the speed of the server doesn’t matter if it’s only up for an hour a day. To this end almost everything in a server is backed up, redundant or simply easy to fix in the event of an issue..