2) Virtual server pools: are group of virtual servers networked to have installed operating systems and other necessary programs and/or applications and are ready for immediate use. They are usually...

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Extracted text: 2) Virtual server pools: are group of virtual servers networked to have installed operating systems and other necessary programs and/or applications and are ready for immediate use. They are usually configured using one of several available templates chosen by the cloud consumer during provisioning. For example, a cloud consumer can set up a pool of mid-tier Windows servers with 4 GB of RAM or a pool of low-tier Ubuntu servers with 2 GB of RAM.