What is VPS?
VPS, or Virtual Private Server – works off part a physical dedicated server and can emulate it completely.
Usually, when talking about VPS we understand it as a service the client is a full administrator of, having the right to install any software and operating system. Each physical server can accommodate a few virtual ones operating simultaneously, each of them being independent and owned by separate clients.
VPS or dedicated server?
For a user, a virtual server will operate like any dedicated server would. Managing a VPS and a real dedicated server is exactly the same: working with a file system and applications, running sever-based software and operating systems is done the just like on a physical server.
On a VPS you can start up unlimited number of web-projects, data bases, users' mail boxes, any financial and accounting software products, development frameworks, CRM, and etc.
The difference between VPS and real server operation is that a physical server can be used to run multiple virtual servers, all in one time, but itself it is always a separate physical PC. However, virtual servers never interfere with each other, so no issues with one of the VPS can affect the operation of its neighbor.
VPS or Shared hosting?
VPS and Shared hosting usually serve different goals and provide different computational powers.
A shared hosting is designed for hosting web sites, online shops, portals – for everything that can be run on a web-server. The server itself is managed by the provider; the client can manage only with their web-project.
If you need a "smart home" for your web-site, then choose shared hosting. It is cheaper than VPS and saves you the headache of running the server by yourself – server routine will be our area of responsibility.
VPS is used for broader challenges, other than just hosting a web-site or e-shop. Here you face no restrictions in terms of web sites quantity, domain extensions or software, which otherwise are limited when talking about a virtual server and its options.
A virtual server will suit you if you are planning to accommodate different sorts of software or major web-projects in one hosting place. If your web site or a few of them perform many different functions, such as information or data exchange, circulating documents and media files, creating accounts for many users or running a large-scale online retail business (that having 5 000 and more items to offer), then prefer VPS in choosing a hosting. Shared-hosting based web sites may use the same IP address and steal server resources from each other, thus deteriorating the performance in case of a large web-project.
Being on a virtual server, you have root superuser rights (for *nix systems) or administrator rights (for Windows) and use ISPmanager 5 Lite server control panel for comfortable management.
VPS or dedicated server?
The choice between VPS and dedicated servers depends on the scale of the challenges they are going to meet. A dedicated server is a separate physical server which is installed at our data center and fully managed by you. Its main functional difference from a virtual solution is that it uses a separate disk system and a dedicated network connection. This guarantees you that users of neighbor servers will not share these resources. For virtual servers, we employ automatic monitoring to restrain such instances; excessive use may lead to a temporary suspension of the VPS upon warning.
The main advantages of a VPS over a dedicated server consist in its affordable cost and flexible scalability. The latter means that if necessary you can easily increase the computational performance of your VPS by adding more memory and processor cores. You can also expand your disk space, but this will require ordering a new virtual server and copying your data to it.
With KVM virtualization a virtual server is created with its own operating system (you can install it from our OS images or upload your own ISO), network interface, disk space, and a dedicated area of RAM memory. The default operating systems available are as follows: CentOS 6, CentOS 7, Debian 7, Debian 8, Ubuntu 14.04, FreeBSD 9, FreeBSD 10. Windows Server 2008 R2 and Windows Server 2012 R2 operating systems only available for a recurring subscription fee.
This type of virtualization brings more stability and reliability to server operation, but its resources, if needed, cannot all be freely scaled at a later time. If you do have to give some boost to your KVM virtual server, then you actually need to order a new one and transfer all your data onto it.
The KVM virtualization can suit any needs. Very often, this virtualization is applied on servers dedicated for subsequent hosting of game servers and other resource-intensive projects, major web sites, development frameworks and accounting platforms.