RAM, which means Random Access Memory, is a computer storage media that could be accessed faster than a hard disk drive, as the info can be read randomly, skipping the bytes before the needed information is reached. On a hosting server, the RAM is employed to load scripts and web applications 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 will be able to look through your Internet sites without effect on the site’s/server’s performance. Different from a disk drive, however, the RAM is employed for non permanent storage purposes, due to the fact that the data is lost as soon as the power is shut off. When you use a shared web hosting account, the physical memory your scripts are able to use may be limited and may change according to what the some other clients on the same machine use. With a virtual or a dedicated hosting server, however, you will have a set amount of RAM which won't be used by anybody else even when you don't use it at a certain time.