While Virtual Private Servers (VPS) have long been common place in the computer mainframe sector of computing, they are starting to re-emerge as a new attraction in the internet hosting industry. In simple terms a VPS system allows the host to “separate” off one server into a number of accounts - which basically act like servers within a server. Nothing new in this you may think?
Well, the beauty of this type of hosting is that each sub-server is able to hold its own operating system (allowing different users to use different operating systems on the same main server) and perhaps more importantly each virtual server can be carry out any transactions independently of the others on the physical server, e.g. rebooting, etc.
The emergence of this style of hosting has been encouraged of late by new virtualisation software, which allows each sub-server to act independently of all of the others. Not only does this offer a useful service to website owners, it allows hosting companies to fully utilise any space they have on their servers. The fact that they are able to run at full capacity reduces both the cost to the host, and ultimately the cost to the client.
VPS hosting is a useful hybrid between shared web hosting and dedicated hosting services, allowing the freedom of choice at a fraction of the cost of an individual physical server. You may find that certain hosts will actually put some restrictions on what can and cannot be added to VPS host accounts, but in the main they are proving very useful and very cost effective.