CN1716428A - Hard disc detecting device and method - Google Patents

Abstract

The invention discloses a hard disk detection device and method. The hard disk detection device includes a fault acquisition unit for acquiring pre-fault information of the hard disk, and the fault acquisition unit further includes a first write parameter unit, a read index parameter unit and a comparison unit , wherein, the first write parameter unit is used to write parameters to the high cylinder register, low cylinder register, characteristic register and command register of the hard disk; the read index parameter unit is used to read the index parameter of the hard disk The current value of the hard disk; the comparison unit is used to compare the current value of the index parameter of the hard disk read by the read index parameter unit with the standard value, so as to obtain the pre-failure information of whether the index parameter fails. Correspondingly, the hard disk detection method includes a fault acquisition step, and the fault acquisition step further includes a first write parameter step, a read index parameter step and a comparison step. The hard disk detection device and method of the present invention can obtain detailed information of pre-failure occurrence of the hard disk.

Description

Hard disk detection device and method

technical field

The invention relates to testing technology in the field of communication or electronics, in particular to a hard disk testing device and method.

Background technique

With the continuous development of the information society, the role of hard drives in all walks of life is becoming more and more important. For example, in the subrack of the communication equipment cabinet, the business single board that carries a certain specific business uses hard disks as storage carriers for a large amount of key data and software. Global System for Mobile-Communications), third-generation mobile communication systems (3G), media gateways and other systems also use hard drives for bill storage, front-end and back-end maintenance systems, main control systems, configuration data storage, etc. In order to ensure that a large amount of key data will not be lost and the system using the hard disk as the storage carrier will not crash, the high reliability of the hard disk is required. However, the hard disk is an electromechanical device after all, and its mechanical parts will inevitably fail and wear out. According to industry statistics, the failure rate of hard disks is about 1 to 3%, and the design life is 5 years. The components are motors and motors. If the work exceeds the limited continuous power-on time or read-write duty cycle, the wear and tear of the hard disk will be faster. At the same time, during the working process of the hard disk, the magnetic head scratches the magnetic surface and the floating magnetic particle effect occurs irregularly. (a kind of hard disk failure caused by the accumulation of floating magnetic particles caused by vibration) causes hard disk failure, so if the health status of the hard disk can be obtained in time and reported to the network management, it can be predicted before the hard disk failure, thereby avoiding hard disk failure. It is an important research problem and technology in the industry to cause system crash or data loss due to damage.

As shown in Figure 1, the prior art hard disk detection device includes a second write parameter unit 2, a detection command unit 3, a parameter read unit 4, a judgment unit 5 and a display unit 6, wherein,

The second write parameter unit 2 is used to write parameters to the high cylinder register and the low cylinder register of the hard disk 1;

A detection command unit 3 is sent, configured to send a detection command to the hard disk 1;

The parameter reading unit 4 is used to read out parameters from the high cylinder register and the low cylinder register of the hard disk 1;

Judging unit 5, for judging whether the parameter read from the high cylinder register according to the read parameter unit 4 is the exchange of the high and low bits of the parameter written into the high cylinder register, and the parameter read from the low cylinder register Is it a swap of the high and low bits of the parameters written into the low cylinder register? If so, it means that hard disk 1 has a pre-failure, otherwise it means that hard disk 1 is normal;

The display unit 6, if the judging result of the judging unit 5 is that the hard disk has a pre-failure, it will display the pre-failure on the display interface, otherwise it will not display.

The pre-failure is used to indicate that the hard disk 1 has a potential failure, that is, the hard disk 1 is about to fail.

The prior art utilizes the characteristics of the self-management analysis and reporting technology (SMART, Self Monitoring and Analysis and Reporting Technology) of the hard disk 1 to realize the pre-failure detection of the hard disk 1. That is, write the parameter 0xC2H to the high cylinder register of hard disk 1, write the parameter 0x4FH to the low cylinder register of hard disk 1, and write the parameter 0xB0H to the command register. 1 If a pre-failure occurs, write the parameter 0x2CH to the high cylinder register of hard disk 1 and write the parameter 0xF4H to the low cylinder register of hard disk 1, so only the high cylinder register of hard disk 1 and the low cylinder register of hard disk 1 By analyzing and judging the parameters of the hard disk 1, it can be concluded whether the hard disk 1 has a pre-failure, that is, the parameter read from the high cylinder register is the exchange of the high and low bits of the parameter written into the high cylinder register, and the low cylinder The parameter read from the register is the exchange of the high and low bits of the parameter written into the low cylinder register, which means that the hard disk 1 has a pre-failure.

The prior art hard disk detection device detects the hard disk 1 when the system using the hard disk 1 is started, as shown in Figure 1, in this example, the first write parameter unit 2 writes to the high cylinder register of the hard disk 1 Parameter 0xC2H, write parameter 0x4FH to the low cylinder register of hard disk 1, send detection command unit 3 to send detection command to hard disk 1, that is, write parameter 0xB0H to the command register, detect hard disk 1, and read parameter unit 4 to read out For the parameters of the high cylinder register and the low cylinder register of the hard disk 1, the judging unit 5 judges whether the parameter read by the parameter read unit 4 from the high cylinder register is the high and low bits of the parameter written into the high cylinder register 0xC2H, and whether the parameter read from the low cylinder register is the high-order and low-order exchange 0xF4H of the parameter written into the low cylinder register, if the judgment result of the judgment unit 5 is affirmative, it means that the hard disk 1 has Pre-failure, there is a pre-failure displayed on the display unit 6, otherwise it is not displayed, indicating that the hard disk 1 has no pre-failure.

To sum up, first of all, through the existing technology, we can only know whether the hard disk 1 has a pre-failure, but not what causes it, whether it is the power-on time exceeding the limit, too many scratches, or mechanical parts It is not known that the service life is approaching, etc., resulting in no target when dealing with the problem, making the improvement measures adopted to deal with the fault untargeted;

Secondly, the existing technology only displays whether the hard disk 1 has a pre-failure on the display interface. For example, in the telecommunications field, the telecommunication machine room is generally unattended. If no one knows, no one will deal with it, which may lead to the crash of hard disk 1 and interrupt the business;

Furthermore, the prior art only detects the hard disk 1 when the system is started and initialized. If the system is not restarted and initialized, the hard disk 1 will not be detected, and the hard disk 1 cannot be known when a pre-failure occurs during system operation.

Contents of the invention

The problem to be solved by the present invention is to provide a hard disk detection device and method capable of knowing the detailed reasons for the pre-failure of the hard disk.

In order to solve the above problems, the technical scheme of the hard disk detection device of the present invention:

A hard disk detection device, the hard disk stores the current value of the index parameter of the hard disk and its standard value, including a fault acquisition unit for obtaining pre-failure information of the hard disk,

The fault acquisition unit further includes a first write parameter unit, a read index parameter unit and a comparison unit, wherein,

The first write parameter unit is used to write parameters to the high cylinder register and low cylinder register of the hard disk, write parameters to the characteristic register of the hard disk, and write parameters to the command register of the hard disk;

The read indicator parameter unit is used to read the current value of the indicator parameter of the hard disk;

The comparison unit is used to read the standard value of the index parameter of the hard disk and compare the current value of the index parameter of the hard disk read by the read index parameter unit with its standard value to obtain whether the index parameter has a pre-failure pre-fault information.

The hard disk detection device further includes a sending unit, configured to send the pre-fault information obtained by the fault obtaining unit.

The hard disk detection device further includes a timing unit for setting the detection frequency, and controlling the fault acquisition unit to detect the hard disk at intervals at the set detection frequency.

The frame of the pre-failure information sent by the sending unit includes the following fields:

Error category, used to identify the type of hard disk pre-failure;

Error generation time, used to indicate the time of pre-fault generation;

Error level, used to indicate the severity of the pre-failure; Error parameter, used to indicate the value of the hard disk's index parameter

The hard disk detection device also includes a detection unit for detecting whether the hard disk has a pre-failure, and the detection unit further includes a second write parameter unit, a detection command unit, a read parameter unit, and a judgment unit, including,

The second write parameter unit is used to write parameters to the high cylinder register and low cylinder register of the hard disk;

The sending detection command unit is used to send a detection command to the hard disk;

The parameter read unit is used to read parameters from the high cylinder register and the low cylinder register of the hard disk;

The judging unit is used to judge whether the parameter read by the read parameter unit from the high cylinder register is a parameter written into the low cylinder register, and whether the parameter read from the low cylinder register is written into the high cylinder register. The parameter of the cylinder register, if it is, it means that the hard disk has a pre-failure, otherwise it means that the hard disk has no pre-failure;

If the judging result of the judging unit is that the hard disk has a pre-failure, start the fault obtaining unit to obtain the pre-failure information of the hard disk.

A hard disk detection method, the hard disk stores the current value and the standard value of the index parameter of the hard disk, including a failure acquisition step for obtaining the pre-failure information of the hard disk, and the failure acquisition step further comprises the following steps:

The first parameter writing step is to write parameters to the high cylinder register and low cylinder register of the hard disk, write parameters to the characteristic register of the hard disk and write parameters to the command register of the hard disk;

Read index parameter step, read out the current value of the index parameter of hard disk;

Comparing step, read the standard value of the hard disk index parameter and compare the current value of the hard disk index parameter read by the read index parameter unit with its standard value, to obtain the pre-failure information of whether the index parameter has a pre-failure .

The hard disk detection method further includes a sending step of sending the pre-fault information obtained in the fault obtaining step.

The hard disk detection method further includes a timing step for setting a detection frequency, and controlling the fault acquisition step to detect the hard disk at intervals at the set detection frequency.

The hard disk detection method also includes a detection step for detecting whether the hard disk has a pre-failure, and the detection step further includes the following steps:

The second parameter writing step is to write parameters to the high cylinder register and the low cylinder register of the hard disk;

The step of sending a detection command is to send a detection command to the hard disk;

Read the parameter step, read the parameter from the high cylinder register and the low cylinder register of the hard disk;

Judging step, judging whether the parameter read by the read parameter unit from the high cylinder register is the parameter written into the low cylinder register, and whether the parameter read from the low cylinder register is written into the high cylinder register parameter, if it is, it means that the hard disk has a pre-failure, otherwise it means that the hard disk has no pre-failure;

If the judging result of the judging step is that the hard disk has a pre-failure, start the fault obtaining step to obtain the pre-failure information of the hard disk.

Compared with the prior art, the beneficial effects of the hard disk detection device and method of the present invention are as follows:

First of all, the hard disk detection device and method of the present invention can obtain the pre-failure information of the hard disk, so that it can be known what causes the hard disk to have a pre-failure, so that the problem can be dealt with in a targeted manner, and the improvement measures adopted for dealing with the fault can be targeted sex;

Secondly, the hard disk detection device and method of the present invention can send out the pre-failure information of the hard disk (network management, etc.), instead of only displaying it on the display interface, so that the fault handling personnel such as network management can know the existence of the pre-failure in time, and deal with it in time. In this way, the phenomenon of hard disk crash and business interruption can be avoided;

Furthermore, the hard disk detection device and method of the present invention can set the detection frequency of the hard disk, that is, specify how often to detect the hard disk, not just detect the hard disk when the system using the hard disk is started, so that when the system is running When a pre-failure occurs on the hard disk, it can be known in time and dealt with in time.

Description of drawings

Fig. 1 is the structural diagram of prior art hard disk detection device;

Fig. 2 is a structural diagram of a hard disk detection device of the present invention;

Detailed ways

As shown in Figure 2, in the hard disk detection device of the present invention, the hard disk 1 stores the current value of the index parameter and its reference value, and the hard disk detection device includes a failure acquisition unit 7 for obtaining the pre-failure information of the hard disk 1, so The failure acquisition unit 7 further includes a first write parameter unit 71, a read index parameter unit 72 and a comparison unit 73, wherein,

The first write parameter unit 71 is used to write parameters to the high cylinder register and low cylinder register of the hard disk 1, write parameters to the characteristic register of the hard disk 1, and write parameters to the command register of the hard disk 1;

The read index parameter unit 72 is used to read the current value of the index parameter of the hard disk 1;

The comparison unit 72 is used to read the standard value of the index parameter of the hard disk 1 and compare the current value of the index parameter of the hard disk 1 read by the read index parameter unit with its standard value to obtain whether the index parameter A pre-fault message for a pre-fault occurred.

Further, as shown in FIG. 2 , the hard disk detection device of the present invention further includes a sending unit 8 configured to send the pre-fault information acquired by the fault acquiring unit 7 , which may be sent in the form of frames.

Further, as shown in FIG. 2 , the hard disk detection device of the present invention further includes a timing unit for setting the detection frequency and controlling the fault acquisition unit 7 to detect the hard disk 1 at a certain time interval.

Further, as shown in FIG. 2 , the hard disk detection device of the present invention also includes a detection unit 101 for detecting whether the hard disk has a pre-failure, and the detection unit 101 further includes a second write parameter unit 2, a sending detection command unit 3, a read Parameter unit 4 and judging unit 5, including wherein,

The second write parameter unit 2 is used to write parameters to the high cylinder register and the low cylinder register of the hard disk 1;

The sending detection command unit 3 is configured to send a detection command to the hard disk 1;

The parameter read unit 4 is used to read parameters from the high cylinder register and the low cylinder register of the hard disk 1;

The judging unit 5 is used to judge whether the parameter read from the high cylinder register according to the read parameter unit 4 is the exchange of the high bit and low bit of the parameter written into the high cylinder register, and read from the low cylinder register Whether the parameter of is the exchange of the high bit and low bit of the parameter written in the low cylinder register, if yes, it means that the hard disk 1 has a pre-failure, otherwise it means that the hard disk 1 is normal;

If the judging result of the judging unit 5 is that the hard disk 1 has a pre-failure, the fault obtaining unit is started to obtain the pre-failure information of the hard disk 1 .

The hard disk detection device of the present invention has utilized the SMART characteristic of hard disk 1, as shown in Figure 2, in this example, the first write parameter unit 71 of described fault acquisition unit 7 writes parameter 0xC2 to the high cylinder register of hard disk 1, Write parameter 0x4F to the low cylinder register of hard disk 1, write parameter 0xD1 to the characteristic register of hard disk 1, write parameter 0xB0 to the command register of hard disk 1, and read the index parameter unit 72 to the current value of all index parameters of hard disk 1 Read out through the data port of hard disk 1, comparison unit 73 reads out the standard value of index parameter from hard disk 1 by similar operation and the current value of the index parameter read from hard disk 1 and its standard value (when hard disk 1 leaves the factory, factory setting If the current value of the index parameter exceeds its standard value, it means that the hard disk 1 has a pre-failure in this performance, so that the specific pre-failure information of the hard disk 1 can be obtained. In this example, the current value of the total power-on time of hard disk 1 is 10,002 hours, and its standard value is 10,000 hours. The comparison unit 73 compares the current value of the total power-on time of hard disk 1 with its standard value, and the result is the current The value is greater than its standard value, indicating that the pre-failure of hard disk 1 is caused by too long power-on time.

The index parameters of hard disk 1 in this example are:

Data read error rate (Raw Read Error Rate), if the data read error rate is high, it means that hard disk 1 is about to fail;

Throughput Performance (Throughput Performance), low throughput indicates potential failure of hard disk 1;

Disk startup time (Spin Up Time), if the disk starts slowly, it means that the motor or structural parts are worn out, and the hard disk 1 is about to be damaged;

Start/Stop Count (Start/Stop Count), if the number of start and stop exceeds its standard value, it means that the wear resistance of hard disk 1 components has reached the upper limit;

Sector relocation times (Reallocated Sector Count), used to illustrate the accuracy of hard disk 1 location;

Seek Error Rate (Seek Error Rate), if the seek error rate is high, it means that hard disk 1 is about to fail;

Seek Time Performance (Seek Time Performance), if the seek time exceeds the maximum seek time, it indicates that hard disk 1 is potentially faulty;

Total power-on hours (Power-On Hours Count), if the total power-on time exceeds the upper limit that hard disk 1 can withstand, it means that hard disk 1 has reached the end of its life and has potential failures;

Spin Retry Count (Spin Retry Count), indicating the number of spin retries performed by hard disk 1;

Device Power Cycle Count (Device Power Cycle Count), indicating the number of times the device powers on and off;

CRC error count (CRC Error Count), indicating the read and write error rate of hard disk 1;

Disk Shift (Disk Shift), indicating that the disk is loose, and there is an offset compared with the original position;

G sensor error rate (G-Sense Error Rate), indicating the error rate of the G sensor;

Loaded Hours (Loaded Hours), indicating the working hours of hard disk 1;

Load Retry Count (Load Retry Count), which indicates the number of repeated attempts to read and write hard disk 1;

Load Friction, which is used to reflect the health parameters of structural members;

Load Cycle Count, indicating the number of reads and writes of hard disk 1;

Load-in Time (Load-in Time), indicating the time required for hard disk 1 to read and write;

Power-off retract count (Power-off Retract Count), reflecting the health status of the head arm.

Further, as shown in Figure 2, the sending unit 8 sends the pre-failure information of the hard disk 1 to the fault handling personnel (such as a network administrator, etc.) accident details.

The pre-failure information of the frame format includes the following fields:

Alarm number (Alarmld), used to indicate the number of this pre-fault message;

Error category (AlarmType), used to identify the type of hard disk 1 pre-failure;

Error generation time, used to indicate the time of pre-fault generation;

Error level (Level), used to indicate the severity of the pre-failure;

Error parameter (Paras[PARAM_LEN]), used to indicate the value of the index parameter of hard disk 1;

Function system number (Functionld), which is used to indicate which domain is faulty, such as hardware or software;

Sequence number (NumlnLevel), used to indicate the sequence number of the same error level; which domain has a problem, such as hardware, software, etc.;

Network management subsystem number (SubSystemld), used to indicate the number of the network management subsystem;

The error generation time further includes the following fields:

Year (Year), used to indicate the year when this pre-fault information was generated;

Month (Month), used to indicate the month in which this pre-fault information is generated;

Day (Day), used to indicate the day when the pre-fault information is generated;

Hour (Hour), used to indicate the hour when this pre-fault message is generated;

Minute, used to indicate the minute when the pre-fault information is generated;

Second (Second), used to indicate the second when this pre-failure information is generated.

Through the pre-failure information in the above frame format, it is possible to clearly understand what specific faults will occur in the hard disk 1, and it is possible to eliminate faults in a targeted manner and maintain the normal operation of the system.

Further, as shown in Figure 2, the timing unit 9 of the hard disk detection device of the present invention is used to set the detection frequency, and starts the first write parameter unit of the fault detection unit 7 at a certain time interval, that is, the hard disk 1 is detected, The detection frequency can be set according to the actual application, such as 10 minutes/time, 1 hour/time, 12 hours/time, etc.

Further, as shown in Figure 2, the detection unit 101 for judging whether a pre-failure occurs in the hard disk 1 of the hard disk detection device of the present invention, when the detection unit 101 determines that a pre-failure occurs in the hard disk 1, the fault acquisition unit 7 is started to obtain Specific pre-failure information of hard disk 1.

In this example, first the second write parameter unit 2 of the detection unit 101 writes the parameter 0xC2 to the high cylinder register of the hard disk 1, writes the parameter 0x4F to the low cylinder register of the hard disk 1, and sends the detection command unit 3 to the hard disk 1 Send detection order, promptly write parameter 0xB0 in the order register, hard disk 1 is detected, read parameter unit 4 and read out the parameter of the high cylinder register of hard disk 1 and the low cylinder register of hard disk 1, judging unit 5 judges described Whether the parameter read by the read parameter unit 4 from the high cylinder register is the parameter 0x4F written into the low cylinder register, and whether the parameter read from the low cylinder register is the parameter 0xB0 written into the high cylinder register, if If the judgment result is affirmative, it means that the hard disk 1 has a pre-failure, otherwise it means that the hard disk 1 has no pre-failure.

Correspondingly, in the hard disk detection method of the present invention, the hard disk 1 stores the current value of the index parameter of the hard disk 1 and the standard value thereof, and the hard disk detection method includes a fault acquisition step for obtaining pre-failure information of the hard disk 1, and the A further step of the fault acquisition step includes the following steps:

The first write parameter step, write parameters to the high cylinder register and low cylinder register of hard disk 1, write parameters to the characteristic register and command register of hard disk 1;

Read index parameter step, read out the current value of the index parameter of hard disk 1;

Comparing step, read out the standard value of the index parameter of hard disk 1 and compare the current value of the index parameter of hard disk 1 read by said reading index parameter step with its standard value, to draw whether the pre-failure of this index parameter breaks down information.

Furthermore, the hard disk detection method of the present invention further includes a sending step of sending the pre-fault information obtained in the fault obtaining step.

Furthermore, the hard disk detection method of the present invention further includes a timing step, which is used to set the detection frequency, and controls the fault acquisition step to be executed at a certain time interval to detect the hard disk 1 .

Further, the hard disk detection method of the present invention also includes a detection step for detecting whether the hard disk 1 has a pre-failure, and the detection step further includes the following steps:

The second parameter writing step is to write parameters to the high cylinder register and the low cylinder register of the hard disk 1;

The step of sending a detection command is to send a detection command to the hard disk 1;

Read the parameter step, read the parameter from the high cylinder register and the low cylinder register of hard disk 1;

Judging step, judging whether the parameter read by the read parameter unit from the high cylinder register is the parameter written into the low cylinder register, and whether the parameter read from the low cylinder register is written into the high cylinder register parameter, if it is, it means that hard disk 1 has a pre-failure, otherwise it means that hard disk 1 has no pre-failure;

If the judging result of the judging step is that the hard disk 1 has a pre-failure, start the fault acquisition step to acquire the pre-failure information of the hard disk 1 .

Although the technical solution of the hard disk detection device and method of the present invention has been described in detail above, those skilled in the art can still make various changes, replacements and modifications without departing from the scope of the present invention claimed above. .

Claims (9)

1, a kind of hard disc detecting device, described hard disk have the currency and the standard value thereof of the index parameter of hard disk, it is characterized in that, comprise the fault acquiring unit of the pre-failure message that is used to obtain hard disk,

Described fault acquiring unit further comprises the first write parameters unit, reads index parameter unit and comparing unit, wherein,

The described first write parameters unit is used for writing parameter, writing parameter and write parameter to the command register of hard disk to the characteristic register of hard disk to the high cylinder register of hard disk and low cylinder register;

The described index parameter unit of reading is used to read the currency of the index parameter of hard disk;

Described comparing unit, be used to read hard disk index parameter standard value and described currency and its standard value of reading the index parameter of the hard disk read the index parameter unit compared, to draw the pre-failure message whether pre-fault appears in this index parameter.

2, hard disc detecting device as claimed in claim 1 is characterized in that, described hard disc detecting device also comprises transmitting element, is used to send the accessed pre-failure message of described fault acquiring unit.

3, hard disc detecting device as claimed in claim 1 or 2 is characterized in that, described hard disc detecting device also comprises timing unit, is used for setting detecting frequency, controls described fault acquiring unit and detects hard disk with the detection frequency interval ground of setting.

4, the described hard disc detecting device of claim 2 is characterized in that, the frame of the pre-failure message that described transmitting element sends comprises following field:

Error category is used to identify the type of the pre-fault of hard disk;

The mistake generation time is used to the time that shows that pre-fault produces;

Error level is used to show the order of severity of pre-fault;

Wrong parameter is used to represent the value of the index parameter of hard disk

5, hard disc detecting device as claimed in claim 1, it is characterized in that, described hard disc detecting device also comprises and is used to detect the detecting unit whether hard disk has pre-fault, described detecting unit further comprises the second write parameters unit, sends the sense command unit, reads parameter unit and judging unit, comprise wherein

The described second write parameters unit is used for writing parameter to the high cylinder register and the low cylinder register of hard disk;

Described transmission sense command unit is used for sending sense command to hard disk;

The described parameter unit of reading is used for reading parameter from the high cylinder register and the low cylinder register of hard disk;

Described judging unit, be used to judge whether the described parameter of reading to read from high cylinder register the parameter unit is written to the parameter of low cylinder register, and whether be written to the parameter of high cylinder register from the parameter that low cylinder register is read, if, pre-fault appears in the expression hard disk, otherwise the expression hard disk does not have pre-fault;

Pre-fault occurs if the judged result of described judging unit is a hard disk, then start the pre-failure message that described fault acquiring unit obtains hard disk.

6, a kind of hard disk detection method, described hard disk has the currency and the standard value thereof of the index parameter of hard disk, comprises the fault obtaining step of the pre-failure message that is used to obtain hard disk, and a nearly step of described fault obtaining step may further comprise the steps:

The first write parameters step writes parameter, writes parameter and write parameter to the command register of hard disk to the characteristic register of hard disk to the high cylinder register of hard disk and low cylinder register;

Read the index parameter step, read the currency of the index parameter of hard disk;

Comparison step, read hard disk index parameter standard value and described currency and its standard value of reading the index parameter of the hard disk read the index parameter unit compared, to draw the pre-failure message whether pre-fault appears in this index parameter.

7, hard disk detection method as claimed in claim 6 is characterized in that, described hard disk detection method also comprises forwarding step, is sent in the pre-failure message that gets access in the described fault obtaining step.

As claim 6 or 7 described hard disk detection methods, it is characterized in that 8, described hard disk detection method also comprises regularly step, be used for setting and detect frequency, control described fault obtaining step and detect hard disk with the detection frequency interval ground of setting.

9, hard disk detection method as claimed in claim 6 is characterized in that, described hard disk detection method comprises also and be used to detect the detection step whether hard disk has pre-fault that described detection step further may further comprise the steps:

The second write parameters step writes parameter to the high cylinder register and the low cylinder register of hard disk;

Send the sense command step, send sense command to hard disk;

Read the parameter step, read parameter from the high cylinder register and the low cylinder register of hard disk;

Determining step, judge whether the described parameter of reading to read from high cylinder register the parameter unit is written to the parameter of low cylinder register, and whether be written to the parameter of high cylinder register from the parameter that low cylinder register is read, if, pre-fault appears in the expression hard disk, otherwise the expression hard disk does not have pre-fault;

Pre-fault occurs if the judged result of described determining step is a hard disk, then start the pre-failure message that described fault obtaining step obtains hard disk.

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