Dedicated hosting plans offer hosting where the client leases an entire server that is unique to the owner and shared with no others. With a dedicated hosting plan you have much more flexibility on how your resources are distributed. You also have full control of the type of operating system used, hardware and more. In most cases, your server administration can be provided by your hosting company (additional charges may apply). In any case, the benefit is worth the price. A larger profit and less overhead can't be bad for business!
Dedicated servers are generally housed in data centers which have constant power sources and a controlled environment free from dust and excessive temperatures for the maximum in server uptime. It is important for either request support for your system from your host (most can provide this for an additional charge) or arrange third party support for your server.