Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Patent
1997-05-12
1999-10-19
Beausoliel, Jr., Robert W.
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
714 42, 714 8, 714 48, G06F 1100
Patent
active
059681829
ABSTRACT:
A method and means within a hierarchical, demand/response DASD subsystem of the passive fault management type in which, upon the occurrence of fault, error, or erasure, a long device busy signal of finite duration is provided to a host CPU. Any DASD storage device subject to the anomaly is isolated from any host inquiry during this interval. These measures permit retry or other recovery procedures to be implemented transparent to the host and the executing application. This avoids premature declarations of faults, errors, or erasures and consequent host application aborts and other catastrophic measures. If the detected anomaly is not resolved within the allotted time, then other data recovery procedures can be invoked including device reset, the status reported to the host, and the next request processed.
REFERENCES:
patent: 4207609 (1980-06-01), Luiz et al.
patent: 4761785 (1988-08-01), Clark et al.
patent: 5191584 (1993-03-01), Anderson
patent: 5210860 (1993-05-01), Pfeffer et al.
patent: 5214778 (1993-05-01), Glider et al.
patent: 5274645 (1993-12-01), Idleman et al.
patent: 5274794 (1993-12-01), Ewing et al.
patent: 5278838 (1994-01-01), Ng et al.
patent: 5331646 (1994-07-01), Krueger et al.
patent: 5367669 (1994-11-01), Holland et al.
patent: 5504859 (1996-04-01), Gustafson et al.
patent: 5550543 (1996-08-01), Chen et al.
patent: 5617425 (1997-04-01), Anderson
Chen James C.
Liu Julia
Ng Chan Y.
Sherman, II William G.
Beausoliel, Jr. Robert W.
Brodie R. B.
International Business Machines - Corporation
Klein E. E.
Nguyen Andy
LandOfFree
Method and means for utilizing device long busy response for res does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and means for utilizing device long busy response for res, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and means for utilizing device long busy response for res will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2050222