Maintenance of a data processing system.

摘要

The invention relates to a method and apparatus for the maintenance of a data processing system 203. A topology map of the physical connections of direct access storage devices of storage subsystems 211 is created. This map enables the system to keep track of the physical configuration of DASDs and their control units, especially in the case of interconnected processor complexes. According to an embodiment of the invention, the topology map also includes desired status data and other information data about the DASDs. This data is used in the monitoring of the DASDs to determine deviations from desired operating characteristics.