Virtual private server
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A virtual private server (VPS) is a virtual machine sold as a service by an Internet hosting service. The term "virtual dedicated server" (VDS) also has a similar meaning.
A virtual private server runs its own copy of an operating system (OS), and customers may have superuser-level access to that operating system instance, so they can install almost any software that runs on that OS. For many purposes, it is functionally equivalent to a dedicated physical server and, being software-defined, can be created and configured more easily. A virtual server costs less than an equivalent physical server. However, as virtual servers share the underlying physical hardware with other VPSes, performance may be lower depending on the workload of any other executing virtual machines.[1]
Virtualization
The force driving server
Partitioning a single server to appear as multiple servers has been increasingly common on
Hosting
Many companies offer virtual private server hosting or virtual dedicated server hosting as an extension for
With unmanaged or self-managed hosting, the customer is left to administer their own server instance.
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 10 Gbit/s). This means that the customer is theoretically able to use approximately 3 TB on 10 Mbit/s or up to approximately 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.
See also
References
- ^ "Virtual Private Server (VPS) or Virtual Dedicated Server (VDS)". searchservervirtualization.techtarget.com. March 2017. Retrieved 13 February 2019.
- ^ "VPS Web Hosting ( Virtual Private Server ) advantages and disadvantages". online-sciences.com. 18 December 2015. Retrieved 13 February 2019.