Abstract: Processing within a computing environment that supports pageable guests is facilitated. Processing is facilitated in many ways, including, but not limited to, associating guest and host state information with guest blocks of storage; maintaining the state information in control blocks in host memory; enabling the changing of states; and using the state information in management decisions. In one particular example, the guest state includes an indication of usefulness and importance of memory contents to the guest, and the host state reflects the ease of access to memory contents. The host and guest state information is used in managing memory of the host and/or guests.

Abstract: The present invention relates to a method, a computer program product and a system for managing virtual instances of a physical port attached to a network. The method is based on the Fibre Channel N_Port virtualisation for a physical Fibre Channel N_Port. Multiple virtual Fibre Channel adapters share a single physical N_Port among multiple operating system instances. The invention discloses means for the automatic and persistent generation and administration of unique Worldwide Port Names needed for the N_Port virtualisation.

Abstract: The invention relates to a server computer comprising an adapter component (6) for receiving of a request from an operating system and having an access rights administration module (8) for assigning of access rights to the operating system and for granting of the request in case of compliance with the corresponding access rights, and a fibre channel module (14) for sending the request to the resource via a fibre channel.