If you have a shared hosting account but your websites take too much system resources and your provider is complaining you about it then it's time to think about VPS hosting or virtual private servers. Here over using server resoureces is not about Bandwidth or disk space. Which you can upgrade without moving to a VPS hosting account.

A virtual private server is a method of splitting a dedicated server. Each virtual server can run its own full-fledged operating system, and each server can be independently rebooted. Virtual private servers bridge the gap between shared web hosting services and dedicated hosting services, giving independence from other customers of the VPS service in software terms but at less cost than a physical dedicated server.

There are 2 type of VPS hosting accounts. The price of your virtual private server depends on which type you choose.

• Unmanaged VPS Hosting - The customer is left to monitor and administer their own server.
• Fully managed VPS Hosting - Provider handle all technical things like installing services.

Fully managed VPS Hosting cost you lot more than Unmanaged VPS acount would do. But in return you get your servers monitored and administrated by the providers. If you are new of VPS Hosting then better go for a Managed VPS Hosting account.