The term "disk space" may also be identified as "disk quota" or "data storage", still all these terms mean exactly the same thing - the amount of data that you can upload to a shared website hosting account. The full size of what you have is estimated by accumulating the space used by all the content within the account, the most apparent being the files you upload. Two other things are often forgotten by the majority of people, though - emails and also databases. Big attachments and databases of large script-driven websites can sometimes need a lot of disk space too. In order to use a more common analogy, the disk space of your PC is consumed not only by files that you download, but additionally by docs you generate along with programs you add. Similarly, a number of things are counted in the disk space that your information uses on a web hosting server, in addition to the uploads.