Deterministic preventive recovery from a predicted failure in a distributed storage system
First Claim
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1. A data storage system comprising:
- a plurality of predictive failure analyzing data storage devices; and
a deterministic preventive recovery circuit that simultaneously monitors each of the plurality in conjunction with normal data access operations with respect to an indicator of a predicted failure, wherein the indicator is not an actual data access failure, to apply predetermined rules stored in memory to data potentially affected by the predicted failure and thereby initiate a selected preventive recovery procedure.
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Abstract
A data storage subsystem in a distributed storage system having a plurality of predictive failure analyzing data storage devices. The subsystem furthermore has a circuit that is responsive to a predicted failure indication by a data storage device in relation to predetermined rules stored in memory for deterministically initiating a preventive recovery either by a data recovery procedure in the data storage device or by a fault tolerance storage arrangement in the subsystem.
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Citations
19 Claims
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1. A data storage system comprising:
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a plurality of predictive failure analyzing data storage devices; and a deterministic preventive recovery circuit that simultaneously monitors each of the plurality in conjunction with normal data access operations with respect to an indicator of a predicted failure, wherein the indicator is not an actual data access failure, to apply predetermined rules stored in memory to data potentially affected by the predicted failure and thereby initiate a selected preventive recovery procedure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 15, 16, 17, 18, 19)
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8. A method for protecting stored data in a plurality of data storage devices of a data storage system comprising:
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predicting a data transfer failure by each of the plurality of data storage devices; simultaneously monitoring each of the plurality in conjunction with normal data access operations for an indicator of a predicted failure from the predicting step, wherein the indicator is not an actual data access failure; analyzing the predicted failure in relation to applying predetermined rules to data potentially affected by the predicted failure; and initiating a selected preventive recovery procedure in response to the analyzing step. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification