Virtual Private Servers have become popular means of web hosting. Basically, creating VPS involves partitioning strong server into small parts and then enabling these parts to work independently. With this, each part can have its own software and operating system. It is possible to make changes to one part without affecting any part that is working on that same server.
 
VPS provides great performance improvement over the shared hosting (where only limited changes are permitted), but still it is cheap when compared to the dedicated server (that provides complete control on the server) You need to have some technical knowledge to run the website on this server.
 
When deciding on a particular VPS hosting service provider, you should consider the below mentioned factors.
 
1.    RAM (Random Access Memory) : The amount of RAM has  major influence on the web hosting service’s performance. To get a quality service, it is advised to choose a service that offers enough RAM Since, RAM is expensive, the price of vps web hosting greatly depends on it
 
2.    Storage: To enjoy the hosting services fully, you need to have enough disk space. Storage space is required to store operating system and installed software like web server, application code, content etc. When the website grows, the content emerges as major part of storage. When selecting the amount of disk space, you must consider these factors.
 
3.     Data-transfer : Data transfer is the data which you send and receive with your server. The limit to the amount of data transfer is different for different service providers. Data-transfer is known as bandwidth also but this is not the right term for data transfer.
 
Hosting plans, generally, do not give any description about the speed of CPU. This hosting besides sharing its physical server with other server, it shares CPU also. Speed of CPU is an important factor that can help you differentiate between different hosting service providers. However, you may not be able to get this information easily, but reviews of different service providers on the internet can help you get this information. Uptime guarantee, location of server, and customer are some other important factor to consider before selecting a particular service.