1. A computer-implemented method of managing a centrally managed system of servers, said method comprising: while a target workload is running in a target partition of a target hardware server using a first amount of hardware resources, assigning a second amount of hardware resources to said target partition in excess of a licensed amount of said hardware resources on which said first workload is licensed to run under a software license associated with said first workload, said target workload including an operating system or an application; increasing said licensed amount to at or above said second amount at least in part by using an inter-server transfer of software license rights from a source workload running on a source hardware server to said target workload; and allocating said second amount of said hardware resources to said target partition at least in part by using an intra-server transfer of said hardware resources from a source partition of said target hardware server to said target partition.