Some web hosts seem to offer amazing deals when it comes to storage space, banding around figures like GB and "unlimited" like they were going out of fashion
On our packages at
Web Hosting Free we tend to calculate disc space in a more understandable way, and therefore to help put this in perspective for you, we have provided some information below, based on how much "hard drive space" some of our sites use so you can relate to the figures
Web Hosting Free for example uses just over 2MB of disk space (and some of that is not needed)
Just Check Web Design uses 22.6MB of disk space and that includes forum software

On Web Hosting Free we tend to offer sensible amounts of disk space, so the following applies:
STARTER - BASE ENTRY LEVEL WINDOWS PACKAGE100MB
PLUS - PERSONAL/SMALL BUSINESS WINDOWS PACKAGE250MB
PRO - BUSINESS USER LEVEL WINDOWS PACKAGE350MB
PRO PLUS+ - BUSINESS USER LEVEL PLUS WINDOWS PACKAGE600MB
Should you take a hosting package with 100GB space or one with 200GB space?
This depends on the kind of web site you want to develop. For example, if you envisage a web site with lots of large files (such as music or video), you would definitely need larger web space than the average web site. Let us now look at some figures:
A web page should ideally be less than 20kb, and that is only the HTML. If we include external JavaScript file (average 2kb), external Cascading Style Sheets file (average 2kb), and embedded images (not more than 50 kb), the total size of the web page becomes 74kb. And if your web site has a hundred pages, it would require 7.5MB. So it hardly makes a difference if you take hosting with 100GB or 200GB - the question being, would you ever utilize all the space provided by your web host
As a rough guide:
20 pages = 3 MB
140 pages = 20MB
Edited by MrTWS - 10 Jan 2010 at 4:31pm