RAM, that refers to Random Access Memory, is a computer storage media that is accessed considerably faster than a hard disk drive, simply because the information can be read randomly, skipping the bytes before the needed data is reached. On a server, the RAM is employed to load scripts and web programs when they are executed, so the more RAM you are able to use, the more programs you shall be able to run at the same time and the more people will be able to look through your Internet sites without any effect on the site’s/server’s functionality. Different from a disk drive, however, the RAM is used for momentary storage purposes, due to the fact that the info is lost once the power is shut off. If you use a shared web hosting account, the physical memory that your scripts may use may be limited and can change according to what the other customers on the same server use. With a virtual or a dedicated server, alternatively, you shall have a guaranteed amount of RAM that will not be used by others even if you do not use it at a given time.