Main Storage Error Mapping Mechanism
Original Publication Date: 1984-Aug-01
Included in the Prior Art Database: 2005-Feb-04
A method is disclosed to provide an aid for faulty element identification when main store failure occurs by recording correctable and uncorrectable error occurrences. In a typical storage system, repair of hardware which is creating intermittent uncorrectable errors (UEs) requires reproduction of at least one of the correctable errors (CEs) by a diagnostic program. Experience has shown that a diagnostic program is not always able to reproduce the failure. Procedures are used which relocate array cards by dispersing them across different error boundaries. This results in multiple errors before a failing array card/component can be found or verified. Another solution has been to replace entire groups of storage cards, which is a very costly form of repair.