US Patent 9479575 Managing capacity on demand in a server cloud

A cloud capacity on demand manager manages capacity on demand for servers in a server cloud. The cloud capacity on demand manager may borrow capacity from one or more servers and lend the capacity borrowed from one server to a different server in the server cloud. When the server cloud is no longer intact, capacity borrowed from servers no longer in the server cloud is disabled, and servers no longer in the server cloud reclaim capacity that was lent to the server cloud.