Data processing system including a memory system.

摘要

Combination of split memory modules, each module partitioned into a first section and a second section. Each module has its own power source (101, 103) so that the failure of a single power source will not affect the other modules. A particular block of data is not stored in both sections of a single module. Each modified block of data is stored in the first section of one module and the second section of a different module. Failure of a power supply will not cause a loss in data since the modified data is also stored in a section of a module not powered by the same power supply. The failure of all power supplies will not result in the loss of any data if either the first or second section of the memory modules is non-volatile, i.e., backed up, usually by battery sources. <IMAGE>