Cloud Computing

• OS Level Virtualization is a type of server virtualization technology which works at the OS layer.

• The physical server and single instance of the operating system is virtualized into multiple isolated partitions, where each partition replicates a real server.

• The OS kernel will run a single operating system and provide that operating system functionality to each of the partitions.

• Operating-system-level virtualization is not as flexible as other virtualization approaches since it cannot host a guest operating system different from the host one, or a different guest kernel.

• For example, with Linux, different distributions are fine, but other operating systems such as Windows cannot be hosted.

• Operating system virtualization (OS virtualization) is a server virtualization technology that involves tailoring a standard operating system so that it can run different applications handled by multiple users on a single computer at a time.

• The operating systems do not interfere with each other even though they are on the same computer.

• In OS virtualization, the operating system is altered so that it operates like several different, individual systems.

• The virtualized environment accepts commands from different users running different applications on the same machine. The users and their requests are handled separately by the virtualized operating system.