Intermittent Memory Failure Detection and Reconfiguration
Original Publication Date: 1989-Mar-01
Included in the Prior Art Database: 2005-Jan-27
Through the use of a memory exerciser routine and spare memory modules included as part of a microprocessor-controlled Field Replaceable Unit (FRU), intermittently failing memory modules can be detected and replaced dynamically, reducing Repair Actions (RAs), system downtime, and re IML/IPLs. This exerciser also allows manufacturing to rigorously test FRU memories, substantially reducing the number of intermittently failing parts shipped to the field. To eliminate the problems caused by intermittently failing memory modules, a memory exerciser routine is provided as part of the microcode associated with a microprocessor-controlled FRU.