In a dedicated hosting plan, a client leases or rents a physical server from a hosting provider. With Dedicated hosting plans, the client has complete control of the physical server and access to all its resources. This is a good fit for companies that have websites that expect a high amount of traffic, that are running intensive CPU applications, and that are hosting enterprise CMS sites.
Hostinger gives you the chance to build a project the way you want it. Our VPS hosting allows the use of multiple kernels and offers of a wide range of operating systems ready to install in 1-click. Simple, but powerful management tools will let you maximize the potential of your Virtual Private Server. Serious Hardware, serious Linux Optimization and a team of experts maintaining it around the clock.
So that could be either a virtual machine - an operating system running inside another operating system, or a virtual private server - you rent a virtual server from a company, so you have your own internet-facing server running 24/7 relatively cheap (since it's not a real server, but one of many virtual server running on an actual server). I think he might have meant the later, since you'd have to run a snartnofe (btw I love that name) non stop to benefit from it.
To break things down a bit, cloud VPS (Virtual Private Server) hosting is when a web hosting provider takes one massive server and partitions it up so that it can have several servers on it, each of which can run its own operating system and can be re-booted independently.  Sounds simple enough.  So what is the difference between managed VPS and unmanaged VPS?
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Amazon Virtual Private Cloud (Amazon VPC) lets you provision a logically isolated section of the AWS Cloud where you can launch AWS resources in a virtual network that you define. You have complete control over your virtual networking environment, including selection of your own IP address range, creation of subnets, and configuration of route tables and network gateways. You can use both IPv4 and IPv6 in your VPC for secure and easy access to resources and applications.
I have some sites hosted on a shared-hosting/cpanel environment and need to make a move up. I have some experience running my own server, but it is very basic (a local box to do live testing/file serv). My question is how difficult is it to run a VPS, should I buy a managed VPS (with stuff already installed), or unmanaged (blank box), and lastly if I go for unmanaged what steps should I take to keep my VPS secure? Edit: Also how difficult is it to backup files and databases? Can it be automated?
Unmetered hosting is generally offered with no limit on the amount of data-transferred on a fixed bandwidth line. Usually, unmetered hosting is offered with 10 Mbit/s, 100 Mbit/s or 1000 Mbit/s (with some as high as 10Gbit/s). This means that the customer is theoretically able to use ~3 TB on 10 Mbit/s or up to ~300 TB on a 1000 Mbit/s line per month, although in practice the values will be significantly less. In a virtual private server, this will be shared bandwidth and a fair usage policy should be involved. Unlimited hosting is also commonly marketed but generally limited by acceptable usage policies and terms of service. Offers of unlimited disk space and bandwidth are always false due to cost, carrier capacities and technological boundaries.[3]