WAVELET BASED HARD DISK ANALYSIS
First Claim
1. A method comprising:
- receiving a signal from one or more sensors on a hard disk, wherein the signal from the one or more sensors indicates a variation in a characteristic of the hard disk;
determining a wavelet decomposition level based on the received signal from the one or more sensors on the hard disk;
performing wavelet analysis on the received signal from the one or more sensors on the hard disk based, at least in part, on the determined wavelet decomposition level;
determining that the received signal indicates anomalies corresponding to deformations on the hard disk based, at least in part, on a result from said performed wavelet analysis on the received signal from the one or more sensors on the hard disk; and
generating an alert indicating one or more mechanical defects on the hard disk.
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Accused Products
Abstract
Monitoring systems with predictive failure analysis technology (e.g., Self Monitoring Analysis and Reporting Technology (S.M.A.R.T)) operate on the basis of correlations between the hard disk'"'"'s mechanical and electronic characteristics. Using wavelet transforms to analyze electrical signals from the hard disks can help better determine changes in values and trends in various hard disk characteristics. Using wavelet transforms allows for thorough and deeper analysis of the electrical signals from the hard disks. Wavelet analysis can be performed on the electrical signal to extract time and frequency information associated with the low and high frequency components. Analyzing the extracted components of the electrical signal can indicate a presence and position of one or more mechanical defects on the hard disk.
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Citations
20 Claims
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1. A method comprising:
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receiving a signal from one or more sensors on a hard disk, wherein the signal from the one or more sensors indicates a variation in a characteristic of the hard disk; determining a wavelet decomposition level based on the received signal from the one or more sensors on the hard disk; performing wavelet analysis on the received signal from the one or more sensors on the hard disk based, at least in part, on the determined wavelet decomposition level; determining that the received signal indicates anomalies corresponding to deformations on the hard disk based, at least in part, on a result from said performed wavelet analysis on the received signal from the one or more sensors on the hard disk; and generating an alert indicating one or more mechanical defects on the hard disk. - View Dependent Claims (2, 3, 4, 5)
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6. A method comprising:
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receiving a signal from a hard disk, wherein the received signal indicates a variation in a characteristic of the hard disk; performing wavelet analysis on the received signal; determining one or more anomalies in the received signal based on said performed wavelet analysis on the received signal; and generating a hard disk alert in response to the one or more anomalies in the received signal. - View Dependent Claims (7, 8, 9)
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10. One or more machine-readable media having stored therein a program product, which when executed a set of one or more processor units causes the set of one or more processor units to perform operations that comprise:
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receiving a signal that indicates a variation in a characteristic of a hard disk; performing wavelet analysis on the received signal; determining one or more anomalies in the received signal based on said performed wavelet analysis on the received signal; and generating a hard disk alert in response to the one or more anomalies in the received signal. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. An apparatus comprising:
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a set of one or more processors; a network interface coupled with the set of one or more processors; and a hard disk wavelet analyzer configured to receive a signal from a hard disk, wherein the received signal indicates a variation in a characteristic of the hard disk; perform wavelet analysis on the received signal; determine one or more anomalies in the received signal based on said performed wavelet analysis on the received signal; and generate a hard disk alert in response to the one or more anomalies in the received signal - View Dependent Claims (18, 19, 20)
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Specification