RAM, which refers to Random Access Memory, is a computer storage media which could be accessed considerably faster than a hard disk, as the info can be read randomly, skipping the bytes before the needed information is reached. On a server, the RAM is employed to load scripts and web apps once they are executed, so the more RAM you can use, the more applications you will be able to run all at once and the more people shall be able to explore your Internet sites without any effect on the site’s/server’s overall performance. Different from a disk drive, however, the RAM is used for momentary storage purposes, due to the fact that the info is lost the moment the power is shut off. When you use a shared web hosting account, the physical memory that your scripts are able to use may be limited and can change based on what the other customers on the same server use. With a virtual or a dedicated server, on the other hand, you shall have a set amount of RAM which won't be used by anybody else even when you don't use it at a particular time.