There are already too many topics touching on unlimited web hosting; saying that it is just a gimmick, a marketer’s strategy and so the list grows. Let us not litter the internet with such topics anymore. Instead, allow me to share with you on the technical (not) possibilities of unlimited web hosting.
The Hardware Setup
To begin with, we have to look at a typical web hosting infrastructure. There are the domain name server or DNS, web (http) server, database server, mail server and backup server. They are all interconnected and are the things needed to keep your website up and running 24/7, all year round. Some setups can take up more servers per cluster, while others need only a minimum number to be functional.
When you access your website, the browser locates and retrieves your site’s DNS from the server, where it then connects to your web, database and mail servers to display the necessary files on the browser. Most of your web files are located on the web server and anything you store will be in that particular server.
Sounds simple, isn’t it?
It is simple, until maybe, when the server box runs out of space within its structural casing to house additional storage media. You see, a server is just like your desktop computer. Just like it, you can keep on adding hard-drives until the casing has no more room for you to add anything.
So, with this simple fact, we know that there is no such thing as unlimited storage.
However, that is an overly simplistic view of a web hosting architecture setup. There are other setups, and an alternative is the storage area network. This setup gives you the possibility of having unlimited storage.
The Storage Area Network
Or SAN for short. A typical SAN setup looks something like the diagram below:

What it does is actually connects an array of storage media to form a single server fabric, allowing you to access these array of virtual drives as if it is a single large hard-drive. You get to find where you store your files from within using a special SAN controller switch. Anytime you run out of storage space, all you need to do is plug in another drive and your hard-drive instantly increases its capacity.
Excellent. Which means the conclusion we draw up earlier just becomes false. To a certain extend, yes.
The Dilemma
Here is where it gets interesting. Although it is possible to setup the architecture into a SAN system, it is business-logically unwise. You see, a SAN setup is not cheap. It could setback the web hosting company hundreds of thousand dollars. Whereas, your web hosting account is only $5 monthly. Even with a large customer-base, at $60 ($5 x 12 months) yearly per customer, it is unlikely the company returned its investments within 5 years.
Also, with other operational, advertising and marketing costs to bear, the company will not see profits for years to come, resulting in a chain reaction, from getting support from cheap unqualified personnel, to the inability of the company to replace malfunctioning hardware. Eventually as the customer, you suffer from poor service.
Maybe in the near future when storage area network has become a commodity, we can all enjoy unlimited web hosting at a quality service level we can agree on, but for now, unlimited web hosting is just not a business-wise decision.
July 27th, 2008 by Hagen (W8Host)