Disk Storage /Disk Space
Your Web disk Storage (or data storage) consists of HTML files, graphics, audio clips, e-mail, and all other files that make up your Web site. The amount of disk Storage you need depends on what your Web site will be used for. If you will only be publishing text, 1MB of Storage is equal to approximately 100 pages of text. However, most Web sites include graphics and as your online business grows, you may also include interactive customer features such as forums which use significantly more Storage.
Another reason you may need more disk Storage is if you are offering software or audio/video files for your visitors to download. You would then need to store these products within your allotted disk storage and again, all these items will take more Storage.
Data Transfer
Data Transfer is the amount of data transmitted over an Internet connection in a given time. It is used up by traffic to your Web site and also sending and receiving e-mail. For example if someone views a 1MB Web page on your site 1MB of data transfer is used. If 10 people view it then 10MB of transfer will be consumed. If you send an e-mail with a 2MB attachment it will use 2MB of data transfer. The amount of transfer that you require while choosing a host depends on two factors:
  1. The size of your site and
  2. The popularity of your site.
If your Web site provides large audio/video files, computer programs, and audio / video downloads then you should consider a package with a large amount of data transfer. For example, if you have a video file that is 1.5 MB in size and 100 visitors download the file during one day. This means that 1.5 GB (1.5MB * 100 visitors) of transfer will have been used. If you multiply that by 30 days for the month it comes to 45 GB.
Flash Web sites and Virtual Reality (VR) sites require the most transfer of all.
 
Design
The aesthetic and navigational architecture of a Web site.