RAM, which is short for Random Access Memory, is a computer storage media which may be accessed much quicker than a hard disk drive, simply because the information can be read randomly, skipping the bytes before the needed information is reached. On a hosting server, the RAM is used to load scripts and web programs after they are executed, so the more RAM you are able to use, the more programs you shall be able to run all at once and the more people shall be able to surf your websites with no effect on the site’s/server’s general performance. Unlike a disk drive, however, the RAM is used for temporary storage purposes, because the information is lost the moment the power is shut off. If you use a shared web hosting account, the physical memory which your scripts may use may be limited and can change depending on what the other customers on the same server use. With a virtual or a dedicated hosting server, however, you shall have a fixed amount of RAM which will not be used by others even when you do not use it at a certain time.