Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2006-06-27
2006-06-27
Beausoliel, Robert (Department: 2113)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
C714S033000, C714S037000
Reexamination Certificate
active
07069479
ABSTRACT:
A peripheral device (which is preferably a disk drive) can automatically collect trace data upon detecting certain error conditions. The peripheral device has the ability to selectively alter the range of state data collected in a trace depending on the error type. Preferably, the device includes a programmable processor executing a control program. A set of trace switches, each enabling a corresponding set of trace points, can be independently set by the control program. An error trace identification table identifies, for each error type, a corresponding set of trace switches. If an error is encountered, the trace switches corresponding to the error type are determined from the table, and the switches are set accordingly. In another invention aspect, a set of trap switches in the device can be set to trap on the occurrence of a specific error type, thereby supporting a more detailed error analysis.
REFERENCES:
patent: 5619644 (1997-04-01), Crockett et al.
patent: 5862316 (1999-01-01), Hagersten et al.
patent: 6047353 (2000-04-01), Vishlitzky et al.
Hester Jeffrey Richards
Miller Michael James
Morger Brian Lee
Thorstenson Shad Henry
Beausoliel Robert
International Business Machines - Corporation
Truelson Roy W.
Wilson Yolanda L
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