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.
Essentially, here’s the criteria I would use to judge things – if your site is made up of primarily static, HTML-based content, then you probably don’t need a VPS package. However, if you have a large amount of files stored, multiple sites, dynamic content, and the possibility of major traffic from time to time, then you might consider upgrading to a VPS. It’s a powerful package that allows you to do more than you could with a shared hosting plan, but requires less investment than a dedicated server.
You’re paying more, so there SHOULD be a minimum uptime guarantee and better server speed. Look for a host that offers 99.5% at a very minimum, although ideally, I’d rather go with someone who offers 99.9%. Search through some reviews as there are many who have put this to the test. For example, any of WHSR’s many web host reviews include an uptime record as one of our key tests.
To sum up, a Windows server is more friendly to beginners but is less flexible and more expensive. A Linux server is cheaper and offers more freedom though it requires special skills and does not have a developed support system. Still, the most important question you need to ask yourself is whether your main goal requires Windows or Linux. If you need a Linux server for your needs but do not have required skills to manage it, you can sign up for a managed VPS.
Do you remember those times when you were living on a college campus with very noisy roommates? Or maybe they were super quiet and you enjoyed every day? The point is, it was a gamble - you never knew whom you ended up with. This is pretty much the same as having shared hosting account - you haven’t the faintest idea who is your roommate on a server. The analogy may sound funny but if someone on a shared server becomes a distributed denial of service (DDoS) attack target or get blocked for mass mailing, other accounts on the server will be affected as well. Also, if a shared account abuses server resources, the whole server will be impacted. Using a VPS is like owning a house with a 9 foot privacy fence. You won’t be bothered no matter what your neighbors are doing.
When you create a website, you have to pay a company to host it on their server. This is a powerful computer that allows anyone on the internet to connect and access your site. The lowest level of server is a shared hosting plan where hundreds of websites (and all their data) are stored on one server with all of the server’s resources up for grabs depending on who needs them.
If you are familiar with hosting control panels, shell commands, and you have basic server administration and troubleshooting skills, then unmanaged VPS is the way to go. Note that while you purchase self managed VPS, you should be capable of managing applications, software, services installed on your VPS. Also, you must know installation/uninstallations, resource monitoring, server performance tweaking and troubleshooting of any technical issues.