Lenovo 7S05007XWW software license/upgrade Extra powerful, extra reliable computers that have been specially designed for server applications. For example serving a website, a large database or shared storage space to a lot of users. Servers are often not very quiet and deliver hardly any graphical performance, which makes them not suitable for use as personal computer. If you need a lot of servers, choose a rack mountable model. Those models need less space and your server room will remain tidy.