Error connection device for parity protected memory systems

摘要

The use of a redundant memory subsystem, memory flow control, and a method of copying (srubbing) data from the location of one memory subsystem to the corresponding location in the other memory subsystem provides correction of soft errors in a parity protected memory system without degrading the performance of the memory system except when an error occurs. A copy of the correct data is also provided to the memory system when a location in either of the memory subsystems experiences a hard error.