Both single-machine and cloud-based VPSes are managed using a software program called a hypervisor. The machine that runs the hypervisor is called the host machine and the individual virtual private servers are called guest machines or guest instances. The hypervisor can start and stop the virtual machines and allocates system resources, such as CPU, memory, and disk storage to each VPS.
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?

Unlike managed VPS plans, unmanaged VPS plans are not actively managed by A2 Hosting. Unmanaged VPS plans are for more advanced users who are comfortable using the command-line interface and doing system administration tasks. These plans include root account access so you can customize the server as much as necessary. As a result, you are responsible for the following items:


As WSOL’s Lead Data Center Technician, Tom is responsible for managing and maintaining our data center environment. In addition to server administration, he provides Internal IT support and client end support. He is an expert in networking, virtualization, and data center technologies, providing the knowledge necessary to ensure the best hosting services for WSOL’s clients. When he’s not working, Tom enjoys golf and bowling.
However, with InMotion you get enterprise-level servers and a 90-day money-back guarantee: so you have 3 full months to see if this company is right for you! Is it? We believe so - it's one of the highest ranked VPS services we tested. Unlocked CPU cores allow for faster data processing, and with plenty of resources, you can host not one, but several big projects under one account. If you're not sure whether the VPS can handle what you throw at it, give InMotion a try. It most definitely can.

If your bandwidth usage is high and your website seems slow to perform, you may need more resources than a shared website hosting plan provides. Shared hosting means you share everything - so you're restricted in how big your website can grow, and your available resources (disk space, bandwidth, etc) can be affected by the traffic flow and bandwidth usage of other websites running on the same server.
Your web projects come in all shapes and sizes. Shouldn't your VPS meet your needs more closely? Your project may need additional disk space or data transfer while maybe you don't need so much RAM. Don't get stuck paying for for resources you don't want or don't need from a one-size-fits-all VPS provider. We've got your covered! Design your perfect VPS at A2 Hosting! 
With many other VPS plans, they cut off and limit your resource usage. Our Cloud VPS plans are different in the sense that they offer Burstable RAM limits. You will have a dedicated amount of RAM during low traffic periods (1.5GB for Cloud VPS-1000, 3GB for Cloud VPS-2000 and 6GB for Cloud VPS-3000), but are able to use a higher amount during high traffic surges and spikes.
At the end of the day, you need a reliable VPS that stays online, doesn't crash, and isn't slow. Our next generation VPS platform is highly available. We achieve this through 2X hardware duplication and 3X data replication. That means that even if something happened to your node, or even our infrastructure, we automatically switch to a backup. Spend less time fighting your web hosting company, and more time building your projects.
The most common type of VPS is a web host. Many web hosting companies offer VPS hosting solutions as an alternative to shared hosting and dedicated hosting. A VPS sits in between the two options, usually in both performance and price. Like a shared host, a VPS may share the resources of a physical machine with other hosting accounts. However, a VPS is custom-configureable like a dedicated hosting solution it is isolated ("private") from other accounts.
You can move corporate applications to the cloud, launch additional web servers, or add more compute capacity to your network by connecting your VPC to your corporate network. Because your VPC can be hosted behind your corporate firewall, you can seamlessly move your IT resources into the cloud without changing how your users access these applications. You can select "VPC with a Private Subnet Only and Hardware VPN Access" from the Amazon VPC console wizard to create a VPC that supports this use case.
Typical Use Case: Early stage startup workloads, quick prototypes, prelaunch experimentations, dev/test environments, microservices node, code repositories, dedicated application servers for light workloads. Resource intensive workloads like data aggregation, gaming front-ends, video encoding, high performance computing, batch processing. Also see our managed services for Startupreneurs.
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