Magnectic disk protection mechanism, computer system comprising protection mechanism, protection method for magnetic disk, and program for protection method
First Claim
1. A magnetic disk protection mechanism, comprising:
- an information acquisition mechanism for acquiring information about an environmental change of a magnetic disk device;
a shock prediction mechanism for analyzing the information acquired by said information acquisition mechanism together with a history thereof, and for determining a status of where said magnetic disk device is used, so as to perform a shock prediction; and
a control mechanism for controlling operations of said magnetic disk device including a magnetic head escape operation based on a prediction result by said shock prediction mechanism.
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Accused Products
Abstract
A magnetic disk device protection mechanism comprises a sensor that acquires information on changes in the environment of a magnetic disk device, a sensor driver, a shock manager that analyzes the information acquired by the sensor driver together with a history of the information to determine the status where the magnetic disk device is used to predict a shock, and an HDD filter driver that controls operations of the magnetic disk device including the escape of a magnetic head. The magnetic disk device can also comprise a diagnosis processing section that operates if a shock has occurred actually, to check whether or not the magnetic head could have completely escaped before the occurrence of this shock to carry out diagnosis as to whether or not a fault is occurring in the magnetic disk.
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Citations
28 Claims
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1. A magnetic disk protection mechanism, comprising:
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an information acquisition mechanism for acquiring information about an environmental change of a magnetic disk device;
a shock prediction mechanism for analyzing the information acquired by said information acquisition mechanism together with a history thereof, and for determining a status of where said magnetic disk device is used, so as to perform a shock prediction; and
a control mechanism for controlling operations of said magnetic disk device including a magnetic head escape operation based on a prediction result by said shock prediction mechanism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A magnetic disk protection mechanism, comprising:
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a status determination mechanism for determining a status of where said magnetic disk device is used; and
a control mechanism for controlling operations of said magnetic disk device including a magnetic head escape operation based on a determination result by said status determination mechanism, wherein, when said status determination mechanism determines that there is a high probability of excessive shock to said magnetic disk device, said control mechanism divides an access request to said magnetic disk device into access requests with a small data size per access and transmits the access request to said magnetic disk device. - View Dependent Claims (10, 11, 12)
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13. A magnetic disk protection mechanism, comprising:
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a shock prediction mechanism for predicting a possible shock to a magnetic disk device, based on a variation in at least one physical parameter of an environment of the magnetic disk device;
a control mechanism for controlling operations of said magnetic disk device including a magnetic head escape operation based on a prediction result by said shock prediction mechanism; and
a diagnosis mechanism for operating if a shock actually occurs after said control mechanism has started causing a magnetic head to escape, to determine whether or not the magnetic head has escaped before the occurrence of the shock. - View Dependent Claims (14, 15, 16)
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17. A computer system comprising a magnetic disk device, said computer system further comprising:
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an acceleration sensor for detecting an acceleration of a housing coupled to said magnetic disk device;
a shock manager for analyzing acceleration information acquired by said acceleration sensor and a history thereof, to predict a probability of shock to said magnetic disk device; and
a driver for controlling said magnetic disk device operation including a disk head escape operation based on a prediction result by said shock manager. - View Dependent Claims (18, 19)
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20. A computer system comprising a magnetic disk device, said computer system further comprising:
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a shock manager for determining a status where a housing of said shock manager is used to predict a shock to said magnetic disk device; and
a driver for dividing an access request to said magnetic disk device into access requests with a small data size per access and for transmitting to said magnetic disk device when said shock manager finds a high possibility of excessive shock to said magnetic disk device. - View Dependent Claims (21)
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22. A magnetic disk protection method of protecting a magnetic disk by using a sensor to determine a status where a magnetic disk device is used and by having a magnetic head escape depending on a determination result, said magnetic disk protection method comprising:
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accumulating information histories acquired by said sensor, analyzing the accumulated histories and the latest said information to recognize a change pattern of said magnetic disk device status, and based on a content of said change of said magnetic disk device status, executing a magnetic head escape operation when a shock to said magnetic disk device is predicted.
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23. A magnetic disk protection method of protecting a magnetic disk by using a sensor to determine a status where a magnetic disk device is used and by having a magnetic head escape depending on a determination result, said magnetic disk protection method comprising:
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based on an output by said sensor, determining a status of where said magnetic disk device is used;
controlling operations of division of an access request to said magnetic disk device into access requests with a small data size per access and of transmission to said magnetic disk device when a high possibility of excessive shock to said magnetic disk device is predicted; and
executing a magnetic head escape operation when a shock to said magnetic disk device is found. - View Dependent Claims (24, 25)
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26. A magnetic disk prediction method of protecting a magnetic disk by using a sensor to determine a status of where said magnetic disk device is used and by having a magnetic head escape depending on a determination result, said magnetic disk prediction method comprising:
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based on a variation in an environment of the magnetic disk device, predicting a possible shock to the magnetic disk device;
based on a result of said prediction, controlling operations of said magnetic disk device including a magnetic head escape operation; and
if a shock actually occurs after a magnetic head has started escaping, determining whether or not the magnetic head escape has been completed before the occurrence of the shock, by comparing a pre-shock period, that is a time from a start of an escape operation of the magnetic head until the occurrence of a shock, with an already measured and restored escape time required for the escape operation of the magnetic head. - View Dependent Claims (27)
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28. A program for controlling a computer to implement a magnetic disk device protection mechanism, comprising:
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code for acquiring information on an environmental change toward a magnetic disk device and storing the information in a predetermined storage mechanism;
code for analyzing said acquired information and a history of the information accumulated in said storage mechanism, and for determining a status of where said magnetic disk device is used, so as to perform a shock prediction; and
code for controlling operations of said magnetic disk device including a magnetic head escape operation based on a result of said shock prediction.
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Specification