Abstract: An enhanced mechanism for providing data protection for variable length records utilizes high performance block storage metadata. In an embodiment, an emulated record that emulates a variable length record, such as a Count-Key-Data (CKD) record or an Extended-Count-Key-Data (ECKD) record, is generated by a Host Bus Adapter (HBA) of a mainframe system. The emulated record comprises a sequence of extended fixed-length blocks, each of which includes a data block and a footer. A confluence of the footers defines a high performance block storage metadata unit associated with the emulated record and includes a checksum that covers all data blocks and all footers of the entire emulated record. In one embodiment, the checksum is checked during transit of the emulated record between a HBA and a storage subsystem (e.g.

Abstract: An encryption method encrypts a clear text twice using a first encryption engine to produce a first cipher text and a second encryption engine to produce a second cipher text. The method compares the first cipher text with the second cipher text, or compares a checksum of the first cipher text with a checksum of the second cipher text. If the comparison succeeds, the method transmits the data. In some embodiments, the method uses a first instance of an encryption key to produce the first cipher text and a second instance of the encryption key to produce the second cipher text.

Abstract: A computer-implemented method, apparatus, and computer-usable program code is provided to generate unique identifiers for a logically partitioned and/or virtualized data processing system. A number of computing entities supported by the data processing system are identified to form a number of identified entities. A set of unique identifiers is generated based upon the number of identified entities. A unique identifier from the set of unique identifiers is assigned to a logical computing entity during operation of the data processing system.

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.

Abstract: The invention relates to a server computer having a plurality of virtual machines which share the same fibre channel PCI adapter for communication over a fibre channel and a corresponding method for accessing a resource from a virtual machine comprising the steps of sending a request from the virtual machine together with a request identifier to an adapter component of the server computer, transforming the identifier into an unequivocal identifier of the request, transmitting the request with the unequivocal identifier over a fibre channel to the resource, receiving a response from the resource with an unequivocal identifier of the response, and forwarding the response to the corresponding virtual machine.