Predictive disc drive failure methodology
First Claim
Patent Images
1. A method of performing predictive failure analysis of a disc drive during operation of the disc drive, comprising:
- a) maintaining a first primary error count corresponding to disc drive errors associated with a first attribute of the disc drive, the first primary error count potentially indicative of disc drive failure;
b) maintaining a second primary error count corresponding to disc drive errors associated with a second attribute of the disc drive, the second primary error count potentially indicative of disc drive failure;
c) triggering a first attribute failure when the first primary error count reaches a predetermined relationship to a first threshold value;
d) triggering a second attribute failure when the second primary error count reaches a predetermined relationship to a second threshold value; and
e) predicting imminent disc drive failure after both the first and second attribute failures are triggered.
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Abstract
A method of performing predictive failure analysis (PFA) for a disc drive includes maintaining at least two primary error counts during operation of the disc drive. The primary error counts each correspond to disc drive errors associated with different attributes of the disc drive and are potentially indicative of disc drive failure. Imminent disc drive failure is predicted based upon a combination of the primary error counts.
72 Citations
29 Claims
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1. A method of performing predictive failure analysis of a disc drive during operation of the disc drive, comprising:
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a) maintaining a first primary error count corresponding to disc drive errors associated with a first attribute of the disc drive, the first primary error count potentially indicative of disc drive failure; b) maintaining a second primary error count corresponding to disc drive errors associated with a second attribute of the disc drive, the second primary error count potentially indicative of disc drive failure; c) triggering a first attribute failure when the first primary error count reaches a predetermined relationship to a first threshold value; d) triggering a second attribute failure when the second primary error count reaches a predetermined relationship to a second threshold value; and e) predicting imminent disc drive failure after both the first and second attribute failures are triggered. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of performing predictive failure analysis for a disc drive during operation of the disc drive, comprising:
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a) maintaining a first primary error count corresponding to disc drive errors associated with a first attribute of the disc drive, the first primary error count potentially indicative of disc drive failure; b) maintaining a second primary error count corresponding to disc drive errors associated with a second attribute of the disc drive, the second primary error count potentially indicative of disc drive failure; c) calculating a combined primary error value, which is equal to the first primary error count multiplied by the second primary error count; d) comparing the combined primary error value to a combined threshold value; and e) predicting imminent disc drive failure when the combined primary error value reaches a predetermined relationship to the combined threshold value. - View Dependent Claims (23)
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24. A disc drive including a controller for performing predictive failure analysis of the disc drive during operation of the disc drive, the controller configured to execute instructions stored on a computerreadable medium to perform steps of:
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maintaining a first primary error count corresponding to disc drive errors associated with a first attribute of the disc drive, the first primary error count potentially indicative of disc drive failure; maintaining a second primary error count corresponding to disc drive errors associated with a second attribute of the disc drive, the second primary error count potentially indicative of disc drive failure; triggering a first attribute failure when the first primary error count reaches a predetermined relationship to a first threshold value; triggering a second attribute failure when the second primary error count reaches a predetermined relationship to a second threshold value; and predicting imminent disc drive failure after both the first and second attribute failures are triggered. - View Dependent Claims (25, 26)
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27. A controller for performing predictive failure analysis of a disc drive during operation of the disc drive, the controller configured to execute instructions stored on a computer-readable medium to perform steps of:
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maintaining a first primary error count corresponding to disc drive errors associated with a first attribute of the disc drive, the first primary error count potentially indicative of disc drive failure; maintaining a second primary error count corresponding to disc drive errors associated with a second attribute of the disc drive, the second primary error count potentially indicative of disc drive failure; triggering a first attribute failure when the first primary error count reaches a predetermined relationship to a first threshold value; triggering a second attribute failure when the second primary error count reaches a predetermined relationship to a second threshold value; and predicting imminent disc drive failure after both the first and second attribute failures are triggered. - View Dependent Claims (28, 29)
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Specification