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What does Colocation mean?

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Colocation is a term used to describe a certain type of IT Hosting service provided by telecommunication facilities and data centers to clients who own equipment and need to house it. There are different levels of Colocation – from colocation of a single standard desktop computer or rack server to rack enclosures (cabinets) used for colocation of multiple computing appliances.

The minimum services provided by the host facility (data center) to a client are: space, power feed, access to internet service, power and cooling. The facilities usually house IT equipment into rack cabinets (See “Server Cabinet”, “19-inch Rack” and “Tower Server Rack”), mount them into rack units, connect them to special types of power distribution units (PDU) and connect them to networking equipment (network switches) to provide them with Internet connectivity.

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What does Cloud Server mean?

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Cloud has become a broad term used to describe various products and services, which is supposed to be utilizing the distributed computing model. Strictly speaking “Cloud Server” is just a virtualized computer instance, a Virtual Private Server. However the term “Cloud” should mean that a “Cloud Server” is a computing instance created on top of an IT infrastructure in which the processing power (processing nodes) – CPU and RAM for example – reside on different physical machines than the data storage (SAN or storage nodes).

Some companies define “Cloud Server” for example as “on-demand virtual machine, created to deliver customizable performance and reliability”, although this is pretty much marketeer’s language. Please also be advised that billing a any virtual server hosting service (whatever it is labeled) on per minutes, per hour or per day basis doesn’t make it “Cloud”. What makes it a “Cloud Server” is the ability to scale up the allocated computing resources on demand.

To understand term “Cloud Hosting”, please read article “What does a Cloud Hosting Mean?