RAM, or Random Access Memory, is a kind of computer data storage, that permits the info to be read randomly without accessing the preceding bytes before that. That makes the RAM considerably quicker than other kinds of storage devices such as DVDs or HDDs in which all of the info has to be read so that you can access particular information. If you have a shared hosting account, the total amount of memory which your web programs can use can't be fixed and may commonly rely upon the free memory that's available on the physical hosting server. When using a standalone web server, however, there is always a minimum amount of physical memory that'll be available at all times and will not be allocated to other customers even when it isn't being used. That is valid with our virtual and dedicated servers.