Magnetic disk protection mechanism, computer system comprising protection mechanism, protection method for magnetic disk, and program for protection method
First Claim
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1. A mechanical transport device comprising:
- a system for transport, wherein the system for transport is a vehicle; and
a hard disk drive data storage system attached to said transport system, whereinthe hard disk drive data storage system comprises;
a magnetic recording disk to record data;
a head to read or write the data to or from the disk; and
a shock manager designed to detect a shock condition,wherein the hard disk drive data storage system performs the following operation upon detecting a shock condition;
dividing an access request to said magnetic disk device into access requests with a smaller data size per access.
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Abstract
A mechanical transport device includes a system for transport; and a hard disk drive attached to the system. The hard disk drive comprises a magnetic recording disk to record data, a head to read or write the data to or from the disk, and a drop sensor designed to sense a shock condition. The system for transport may be a vehicle such as a car. Additional systems are also presented.
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Citations
19 Claims
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1. A mechanical transport device comprising:
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a system for transport, wherein the system for transport is a vehicle; and a hard disk drive data storage system attached to said transport system, wherein the hard disk drive data storage system comprises; a magnetic recording disk to record data; a head to read or write the data to or from the disk; and a shock manager designed to detect a shock condition, wherein the hard disk drive data storage system performs the following operation upon detecting a shock condition;
dividing an access request to said magnetic disk device into access requests with a smaller data size per access. - View Dependent Claims (2, 3)
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4. A mechanical transport device comprising:
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a system for transport; and a hard disk drive data storage system attached to said transport system, wherein the hard disk drive data storage system comprises; a magnetic recording disk to record data; a head to read or write the data to or from the disk; a sensor designed to sense an environmental condition of the hard disk drive data storage system indicative of a shock condition; and
a shock manager for detecting a shock condition based on information from the sensor,wherein the hard disk drive data storage system performs at least one of the following operations upon detecting a shock condition; dividing an access request to said magnetic disk device into access requests with a smaller data size per access, and causing the head to escape from the disk, wherein if the hard disk drive data storage system determines that a shock actually occurs after the head has been instructed to escape, the hard disk drive data storage system determines whether or not the magnetic head has escaped before the occurrence of the shock, wherein the hard disk drive data storage system further comprises; an information acquisition mechanism for acquiring current information about an environmental change of a magnetic disk device; a shock prediction mechanism for analyzing the current information acquired by said information acquisition mechanism together with a history thereof occurring immediately prior to the current information, 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, wherein the history analyzed is longer than an anticipated time required for a fall, wherein if a variation in the status where said magnetic disk device is used falls within a specified range for a specified period, said shock prediction mechanism does not predict that a shock will be caused by the variation in the status.
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5. A mechanical transport device comprising:
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a system for transport; and a hard disk drive data storage system attached to said transport system, wherein the hard disk drive data storage system comprises; a magnetic recording disk to record data; a head to read or write the data to or from the disk; a sensor designed to sense an environmental condition of the hard disk drive data storage system indicative of a shock condition; and a shock manager for detecting a shock condition based on information from the sensor, wherein the hard disk drive data storage system performs at least one of the following operations upon detecting a shock condition; dividing an access request to said magnetic disk device into access requests with a smaller data size per access, and causing the head to escape from the disk, wherein if the hard disk drive data storage system determines that a shock actually occurs after the head has been instructed to escape, the hard disk drive data storage system determines whether or not the magnetic head has escaped before the occurrence of the shock, wherein the hard disk drive data storage system further comprises; an information acquisition mechanism for acquiring current information about an environmental change of a magnetic disk device; a shock prediction mechanism for analyzing the current information acquired by said information acquisition mechanism together with a history thereof occurring immediately prior to the current information, 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, wherein if the status of where said magnetic disk device is used varies in a predetermined pattern, said shock prediction mechanism predicts that a shock will be caused by the variation in the status.
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6. A mechanical transport device comprising:
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a system for transport; and a hard disk drive data storage system attached to said transport system, wherein the hard disk drive data storage system comprises; a magnetic recording disk to record data; a head to read or write the data to or from the disk; a sensor designed to sense an environmental condition of the hard disk drive data storage system indicative of a shock condition; and a shock manager for detecting a shock condition based on information from the sensor, wherein the hard disk drive data storage system performs at least one of the following operations upon detecting a shock condition; dividing an access request to said magnetic disk device into access requests with a smaller data size per access, and causing the head to escape from the disk, wherein if the hard disk drive data storage system determines that a shock actually occurs after the head has been instructed to escape, the hard disk drive data storage system determines whether or not the magnetic head has escaped before the occurrence of the shock, wherein the hard disk drive data storage system further comprises; an information acquisition mechanism for acquiring current information about an environmental change of a magnetic disk device; a shock prediction mechanism for analyzing the current information acquired by said information acquisition mechanism together with a history thereof occurring immediately prior to the current information, 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, wherein said shock prediction mechanism predicts a shock with reference to a history of input operations provided by a predetermined input device, wherein said input device is selected from a keyboard and a mouse coupled to a computer system which is in communication with the magnetic disk device.
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7. A mechanical transport device comprising:
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a system for transport; and a hard disk drive data storage system attached to said transport system, wherein the hard disk drive data storage system comprises; a magnetic recording disk to record data; a head to read or write the data to or from the disk; a sensor designed to sense an environmental condition of the hard disk drive data storage system indicative of a shock condition; and a shock manager for detecting a shock condition based on information from the sensor, wherein the hard disk drive data storage system performs at least one of the following operations upon detecting a shock condition; dividing an access request to said magnetic disk device into access requests with a smaller data size per access, and causing the head to escape from the disk, wherein if the hard disk drive data storage system determines that a shock actually occurs after the head has been instructed to escape, the hard disk drive data storage system determines whether or not the magnetic head has escaped before the occurrence of the shock, wherein the hard disk drive data storage system further comprises an information acquisition mechanism for acquiring current information about an environmental change of a magnetic disk device; a shock prediction mechanism for analyzing the current information acquired by said information acquisition mechanism together with a history thereof occurring immediately prior to the current information, 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, wherein said information acquiring mechanism acquires information on acceleration of said magnetic disk device, and said shock prediction mechanism recognizes the status where the magnetic disk device is used based on the acceleration information acquired by said information acquiring mechanism.
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8. A mechanical transport device comprising:
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a system for transport; and a hard disk drive data storage system attached to said transport system, wherein the hard disk drive data storage system comprises; a magnetic recording disk to record data; a head to read or write the data to or from the disk; and a sensor designed to sense an environmental condition of the hard disk drive data storage system indicative of a shock condition; and a shock manager for detecting a shock condition based on information from the sensor, wherein the hard disk drive data storage system performs at least one of the following operations upon detecting a shock condition; dividing an access request to said magnetic disk device into access requests with a smaller data size per access, and causing the head to escape from the disk, wherein if the hard disk drive data storage system determines that a shock actually occurs after the head has been instructed to escape, the hard disk drive data storage system determines whether or not the magnetic head has escaped before the occurrence of the shock, wherein the hard disk drive data storage system further comprises; an information acquisition mechanism for acquiring current information about an environmental change of a magnetic disk device; a shock prediction mechanism for analyzing the current information acquired by said information acquisition mechanism together with a history thereof occurring immediately prior to the current information, 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, wherein if said shock prediction mechanism determines that said magnetic disk device is stable, the shock prediction mechanism notifies said control mechanism that said magnetic disk device is stable, and said control mechanism returns said escaping magnetic head in response to said notification, wherein said shock prediction mechanism adaptively determines whether or not said magnetic disk device is stable, based on a history of the information acquired by said information acquiring mechanism before a shock is predicted to occur.
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9. A system for reading or writing data comprising:
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a hard disk drive including; a magnetic recording disk to record data; a head to read or write the data to or from the disk; and a shock manager designed to detect a shock condition; and wherein the shock manager detects the shock condition based on a shock value being over a predetermined threshold level, wherein the shock value is determined by combining values of a linear accelerometer and an angular speed sensor. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A system for reading or writing data comprising:
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a hard disk drive including; a magnetic recording disk to record data; a head to read or write the data to or from the disk; and a shock manager designed to detect a shock condition; and wherein the shock manager detects the shock condition based on a shock value being over an adaptable threshold level set by a user, wherein the shock value is determined by combining values of a linear accelerometer and an angular speed sensor.
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18. A system for reading or writing data comprising:
a hard disk drive including; a magnetic recording disk to record data; a head to read or write the data to or from the disk; and a sensor designed to sense environmental changes of the hard disk drive; and a shock manager for analyzing information from the sensor for predicting occurrence of a shock, wherein the shock manager determines occurrence of a shock based on a shock value being over a predetermined threshold, wherein the shock value is determined by combining values of a linear accelerometer and an angular speed sensor. - View Dependent Claims (19)
Specification