Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2008-05-27
2008-05-27
Bonzo, Bryce P (Department: 2113)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
C714S042000, C714S710000
Reexamination Certificate
active
07380161
ABSTRACT:
A method, computer program product and system for switching a defective signal line with a spare signal line without shutting down the computer system. A service processor monitors error correction code (ECC) check units configured to detect an error in a signal line. If an ECC check unit detects an error rate that exceeds a threshold, then the signal line with such an error rate may be said to be “defective.” The service processor configures switch control units in the driver/receiver pair associated with the defective signal line to be able to switch the defective signal line with a spare line upon receipt of a command from a memory controller switch control unit. In this manner, the system is not deactivated in order to switch a defective signal line with a spare line thereby reducing the time that the processor cannot send information to the memory buffers.
REFERENCES:
patent: 4890224 (1989-12-01), Fremont
patent: 5498886 (1996-03-01), Hsu et al.
patent: 5659678 (1997-08-01), Aichelmann et al.
patent: 5737199 (1998-04-01), Kanamori et al.
patent: 6067594 (2000-05-01), Perino et al.
patent: 6357018 (2002-03-01), Stuewe et al.
patent: 6381708 (2002-04-01), Larsen et al.
patent: 6636943 (2003-10-01), Stancil
patent: 2002/0054518 (2002-05-01), Ooishi et al.
patent: 2003/0051091 (2003-03-01), Leung et al.
patent: 2003/0072185 (2003-04-01), Lane et al.
patent: 2003/0163767 (2003-08-01), Phelps
patent: 2005/0180521 (2005-08-01), Hsu et al.
patent: 2007/0008772 (2007-01-01), Hidaka
patent: 2007/0014172 (2007-01-01), Hidaka
patent: 2007/0174718 (2007-07-01), Fouquet-Lapar
patent: 2008/0016401 (2008-01-01), Jeddeloh
Cordero Edgar R.
Fields, Jr. James S.
Gower Kevin C.
Retter Eric E.
Bonzo Bryce P
International Business Machines - Corporation
Roberts-Gerhardt Diana L.
Voigt, Jr. Robert A.
Winstead P.C.
LandOfFree
Switching a defective signal line with a spare signal line... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Switching a defective signal line with a spare signal line..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switching a defective signal line with a spare signal line... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2761865