The choice you have to make between managed and unmanaged VPS hosting depends on several factors. Your skill in handling the server is an important factor. The efficiency in dealing with the complicated aspects of server hosting is necessary when you lack a manager to administrate the VPS hosting server. The strength of your business in terms of the profit is another important aspect. Considering all these factors, it is always advisable to seek higher opinion in your choice of a web hosting server.
However another option is to pool together a cluster of physical servers into a cloud arrangement whereby the data is stored across several physical disks in several physical machines. This dramatically reduces the possibility of hardware related downtime by spreading the load and the risk of hardware failure. This is a High Availability Cloud setup which Pickaweb uses.
Before we get started with our list of virtual machine software products for you to review, I’d like to recommend reading my new guide to the best virtual software training. This guide covers salary ranges, job skills, and online training options for beginners to learn how to set up, configure, and support virtual servers and desktops. There is even a free training for VirtualBox.
With support for Linux, Windows Server, SQL Server, Oracle, IBM, and SAP, Azure Virtual Machines gives you the flexibility of virtualization for a wide range of computing solutions—development and testing, running applications, and extending your datacenter. It’s the freedom of open-source software configured the way you need it. It’s as if it was another rack in your datacenter, giving you the power to deploy an application in seconds instead of weeks.
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.
The force driving server virtualization is similar to that which led to the development of time-sharing and multiprogramming in the past. Although the resources are still shared, as under the time-sharing model, virtualization provides a higher level of security, dependent on the type of virtualization used, as the individual virtual servers are mostly isolated from each other and may run their own full-fledged operating system which can be independently rebooted as a virtual instance.