Abstract: An apparatus and method are disclosed to check integrity when handling data. The method provides a storage array which includes a plurality of sectors. The method defines (N) data state identifiers and (N) parity state identifiers. The method receives a command to handle data, where that command designates a target sector. The method determines the data state identifier assigned to the target sector, determines the parity state identifier assigned to the target sector, and compares the data state identifier and the parity state identifier. If the method determines that the data state identifier and the parity state identifier are the same, the method performs the command to handle data. Alternatively, if the method determines that the data state identifier and the parity state identifier differ, the method generates an error message.

Abstract: A heat exchanger includes a core with a plurality of passages arranged therein each having an opening positioned adjacent an end portion of the core. A manifold is positioned adjacent the core end portion and includes an inlet and an outlet opening. The manifold includes a divider wall that extends internally therein and that forms separated inlet and outlet passages that are in communication with the respective inlet and outlet openings. The heat exchanger includes a metallic seal interposed between the divider wall and the core to provide a seal therebetween. The seal is constructed to impose a biasing force between the divider wall and the core to provide the desired seal, thereby minimizing or eliminating any unwanted bypass of fluid or gas within the manifold during heat exchanger operation and increasing heat exchanger operating efficiency.