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Advantages and Disadvantages of a VPS

What is a VPS?

VPS stands for Virtual Private Server, sometimes called a VDS (Virtual Dedicated Server). VPS is a fantastic technology which enables isolated server enviorments on one physical server.

One hardware node/server can host many Virtual Servers, we host around 14 VPS servers on each node. Each node is a high end server usually with dual quad core or more CPU power.

Each VPS acts like a real stand-alone server, with full root access and total control to install your own applications and software without the restrictions of a shared hosting enviorment. Each VPS can also be rebooted independently and has its own root, ip's. users, memory, processes, ports.

Advantages:

The cost of VPS is much cheaper than dedicated servers, get the full control without the cost.
Full root access to install your own applications which cant be done on a shared hosting enviroment.
Totally isolated from other users, what they do doesn't impact your VPS, resources or hosting experience in anyway. If one VPS crashes, it doesn't effect the others.
Each VPS has its own Operating system.
Can set servers up to preform any function required, e.g. can be setup to be a dedicated mail server, or backup storage

Disadvantages:

VPS come with limited resources, and are unsuitable for large websites which require lots of RAM or CPU power, this is when a dedicated server is required.
Takes more time and understanding for users to maintain and configure the server compared to shared hosting.