JPH02300682A - Recording medium driving device - Google Patents

Abstract

PURPOSE:To conduct a diagnosis and a test in parallel by diagnosing and testing a magnetic disk according to diagnostic information and recording a defective position. CONSTITUTION:When a diagnosis request is set with a diagnosis setting switch 8, a CPU 14 drives a disk input/output device 13 to read the diagnostic information from a host computer 1 which is recorded on a magnetic disk drive 12 and store it on a memory device 10. Then the CPU 14 drives the device 13 according to the diagnostic information stored on the device 10 to access the magnetic disk, and then monitors a write or read error during the access to make an LED 9 illuminate if the error occurs and register its sector as a defective sector on the memory device 10. Consequently, the intervention of the host computer during the diagnosis and test is not necessary and the removal of the defective sector from a use area is performed in parallel to detect whether or not there is a defect immediately.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a recording medium drive device for recording and reproducing various data, and particularly relates to a recording medium drive device for recording and reproducing various data, and particularly for a 5C3I (Sma!I Comp
This invention relates to a method for self-diagnosing defective parts of disks in magnetic disk devices, optical disk devices, etc., which employs utarSystem Interface and is controlled by CIIU.

[Conventional technology]

In general, medium defects occur in magnetic disks during the manufacturing process, and it is extremely difficult to manufacture magnetic disks free of medium defects, which also results in an increase in manufacturing costs. Therefore, manufacturers of magnetic disk drives use magnetic disks with this media defect, and in order to prevent write/continuation errors from occurring due to the media defect during use by the user, the manufacturer must Area containing defects (
Therefore, defective sectors (hereinafter referred to as defective sectors) are omitted from the write/continuous use area.

However, since the location of the defective sector differs for each magnetic disk, it is necessary to test the location of the defective sector for each magnetic disk device.

FIG. 5 is a block diagram showing the configuration of a conventional test system for diagnosing defective sectors in a magnetic disk drive using 5csr as an interface with a host computer. In the figure, 1 is a host computer that performs various processes and issues instructions, and the post computer 1 is an SC5
Four magnetic disk devices 2.3,
4.5 is connected.

Also, the magnetic disk devices 2, 3...Niba power cable 7
The power supply voltage is applied by.

Next, the test operation of the conventional test system configured as above will be explained. host computer 1ba5c5
A write/read command is issued to the magnetic disk devices 2, 3, . . . via the I cable 6. This write/continue command is applied to all sectors of the magnetic disk under various conditions (
For example, the postcomputer 1 stores this information by treating a sector that has been issued for a long time (for example, data pattern, temperature, humidity) and has a write/continue error as a defective sector. After the test is completed, all defective sector information is transferred to the magnetic disk device 2, and finally the magnetic disk devices 2, 3, etc.
Issue a format command to the . When the magnetic disk devices 2, 3... receive the format command, they write/write defective sectors based on the transferred defective sector information.
Execute the format command so as to omit it from the continuous use area.

In general, a host computer 1 that can issue instructions for testing in 5C5I is expensive, so a plurality of magnetic disk drives 2, 3, etc. are connected to one host computer 1 as shown in FIG. magnetic disk device 1
This is done sequentially for each machine.

[Problem to be solved by the invention]

Since the conventional test system is configured as described above, in order to test a large number of magnetic disk drives, an expensive host computer is required correspondingly, which increases the test cost and requires sequential testing. Therefore, there was a problem in that it took a long time to test all magnetic disk devices.

This invention was made in order to solve the problems mentioned above, and it stores diagnostic information in a recording medium drive and writes data to a disc based on the diagnostic information according to a predetermined instruction. By performing a serial/consecutive test and storing the resulting defective sector location in the recording medium drive, the intervention of the host computer during the diagnostic test is not required, and defective sectors can be removed from the write/read area. It is an object of the present invention to provide a recording medium drive device that can independently perform diagnosis in parallel and shorten the time required for diagnosis.

[Means to solve the problem]

A recording medium drive device according to the present invention includes a diagnosis setting means for setting a diagnosis request, a first memory means for storing information for diagnosis, and a second memory means for recording a defect position. is set, the recording medium is accessed based on the information for diagnosis, an error at the time of access is detected, and the position is recorded as a defective position in the second memory means.

[Effect]

In this invention, when performing a diagnostic test on a recording medium of a recording medium drive device, a diagnostic request is set, and when the diagnostic request is set, based on the information for diagnosis stored in the first memory means, The recording medium is accessed under different conditions. If an error is detected at that time, the error occurrence position is recorded as a defective position in the second memory means, and the recording medium drive device itself can remove the defective sector, allowing diagnostic testing to be performed in parallel. can be done.

〔Example〕

Hereinafter, the present invention will be explained based on the drawings showing one embodiment thereof. FIG. 1 is a block diagram showing the configuration of a magnetic disk device, which is a recording medium drive device according to the present invention, together with a postcomputer.

In the figure, 1 indicates four magnetic disk devices 2.3.4.5
This is a host computer that issues commands, and is connected to the magnetic disk devices 2, 3, . . . via a 5C3I cable 6. The magnetic disk devices 2, 3, etc. are connected to a power cable, and the IIDA (H
The magnetic disk drive 12 and the magnetic disk drive 12 are connected via a disk output device 13 to a memory device 10 consisting of RAM and ROM, and a central processing unit 1 consisting of a CPU.
4 is bidirectionally connected.

central processing unit] 4 is this magnetic disk device 2.3...
- This is the main unit that controls each device within, and is bidirectionally connected to the 5C3I input/output device 11 and the memory device 10, respectively. The central processing unit 14 also includes a diagnostic setting switch 8 for setting a diagnostic request for diagnosing the presence or absence of a defect in the magnetic disks of the magnetic disk devices 2, 3, and so on. The LIiD9 is connected to display this information.

The memory device 10 is bidirectionally connected to the 5C5I input/output device 11 in addition to the disk input/output device 13 and the central processing unit 14, and the host computer 1 connects the memory device via the 5CSR cable 6. 1
0 and the central processing unit 14.

Note that the 40th pin on the 5C5I cable is an input pin for a seven-node signal, and when a reset signal is input to this pin, the operation of the magnetic disk drives 2, 3, . . . is stopped.

Figure 2 shows the configuration of the test system during a diagnostic test, in which the host computer 1 is removed and the diagnostic test is performed by applying voltage to each magnetic disk drive 2, 3, etc. from the power cable 7. .

Next, the self-diagnosis operation of the magnetic data device of the present invention configured as described above will be explained. FIG. 3 is a flowchart 1: I-chart explaining the operation up to the setting of a diagnostic request, and FIG. 4 is a flowchart 1 explaining the operation of the diagnostic test.

In order to cause the magnetic disk drives 2, 3, etc. to perform self-diagnosis, the host computer 1 sends diagnostic information (for example, data pattern, number of write/continuous tests) indicating what kind of self-diagnosis is to be performed. The data is transferred to the magnetic disk device 2 via the 5C3I cable 6 (Sl). The central processing unit 14 instructs this diagnostic information to the 5C5I input/output device 11 and temporarily stores it in the memory device 10 (S2).

Thereafter, the central processing unit 14 drives the disk input/output device 13 and writes diagnostic information to the magnetic disk in the magnetic disk drive 12 (S3).

Here, the power supply to the power cable 7 is stopped (S4), and the diagnosis setting switch 8 is set to "diagnosis request" (S5).
), since the host computer 1 is not needed during the diagnostic test, the 5C5I cable 6 is disconnected from the magnetic disk drive 2 (S6). This operation is simultaneously performed for the other three magnetic disk drives 3 and 4°5 shown in FIG.
Finish setting up the diagnostic request.

After completing the setting of the diagnostic request and removing the 5csr cable 6, the magnetic disk devices 2, 3, . . . have a configuration as shown in Part 2. Next, in the configuration, a diagnostic test is performed on the four magnetic disk drives 2, 3, . . . simultaneously.

First, energization to the power cable 7 is started (5IO), and when it is started, the central processing unit 14 determines whether or not to perform a diagnostic test on the magnetic disk, and the state of the diagnostic setting switch 8 that determines this. Examine and judge (S l 1 ).

When a diagnostic request is set, the central processing unit 14 drives the disk input/output device 13 to read diagnostic information from the host computer 10 recorded on the magnetic disk l''live 12 and stores it in the memory device 10. (Sl2)
. After that, according to the diagnostic information stored in the memory device 10, the disk input/output device 13 is driven to write data to the magnetic disk in the magnetic disk drive 12, read data from the magnetic disk, etc. The disk is accessed (S13).

Then, the occurrence of a write or read error during access is monitored (SL, l), and if an error occurs, LED 9 is lit to indicate that an error has occurred during the diagnostic test (S15), and the sector is marked as defective. It is registered in the memory device 10 as a sector (S16). This 1. ED9
The occurrence of an error can be visually confirmed by the error display, and the presence or absence of a defect in the magnetic disk can be immediately detected.

Next, it is determined whether all the diagnostic tests based on the diagnostic information have been completed (31.7), and if they have been completed, the central processing unit 14 drives the disk input/output device 13 to remove the magnetic disks in the magnetic disk drive 12. Format (S
19). At this time, the defective sector is removed from the write 2j/read use area. Furthermore, when the reset signal is input from the outside to the reset pin (40th pin) on the 5C3I cable 6 when the process has not been completed, the central processing unit determines this (31B), and the writing, 7j/reading After completing the diagnostic test, the process immediately enters the formant processing in step 19. In that case, the defective sector detected already is removed from the write L7)/continue use area. If the reset signal is not input, the process returns to step 13 to continue the diagnostic test.

Finally, turn off the power to the power cable 7 again (S20),
Use the diagnostic setting switch 8 to cancel the diagnostic request setting.5
21), complete all diagnostic tests.

If the switch 11 is not set to request diagnosis, the operations of the magnetic disk drives 2, 3, etc. are the same as before, and the host computer 1 is connected and the commands issued by the host computer 1 are sequentially executed. Execute.

In this embodiment, the diagnostic information is transferred from the host computer to the magnetic disk device, and the magnetic disk diagnostic test is performed according to the diagnostic information. However, the present invention is not limited to this, and the magnetic disk device is Needless to say, diagnostic information may be stored in the memory device of the computer.

In this case, it is no longer necessary to transfer diagnostic information from the host computer each time a diagnostic test is performed, further reducing the time required for a diagnostic test.

Furthermore, in this embodiment, the defect position is stored in the memory device each time it is detected, so even if the diagnostic test is stopped midway through, the defective sectors detected so far are stored in the memory device. The previous defective sectors can be removed from the write/continue use area and formatted, and the previous diagnostic tests can be used effectively without being wasted.

Furthermore, although this embodiment has been described using a magnetic disk device as an example, the present invention is not limited to this, and it goes without saying that it can be applied to other recording medium drive devices such as optical disk devices and magneto-optical disk devices.

Furthermore, in this embodiment, both the defect location and diagnostic information are stored in the memory device, but the present invention is not limited to this, and the defect location and diagnostic information may be stored in separate memory devices. It's okay.

〔Effect of the invention〕

As described above, according to the present invention, a magnetic disk diagnostic test is performed based on the diagnostic information stored in the memory device, and the resulting defective device is stored in the memory device, so that an expensive host computer cannot be connected. It is possible to perform diagnostic tests on a large number of magnetic disk drives simultaneously, and to perform diagnostic tests on a large number of magnetic disk drives in parallel rather than sequentially, thereby achieving the equivalent effect of shortening the time required.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a magnetic disk device which is a recording medium drive device according to the present invention, FIG. 2 is a diagram showing the configuration of a test system during a diagnostic test, and FIG. 3 is an operation up to setting a diagnostic request. FIG. 4 is a flowchart showing the operation of a diagnostic test, and FIG. 5 is a block diagram showing the configuration of a conventional test system. 1...Host computer 2.3, 4.5...Magnetic disk device 8...Diagnostic setting switch 9...1, Er110...Memory device 12...Magnetic disk drive 14...Central processing Apparatus In the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] (1) A recording medium drive device for recording and reproducing data on a recording medium, comprising: a diagnosis setting means for setting a diagnosis request for determining the presence or absence of a defect in the recording medium; and a first device for storing information for diagnosing the recording medium. a memory means; an access means for accessing the recording medium for diagnosis based on the information when the diagnosis request is set; and an access means for accessing the recording medium for diagnosis based on the information; and a second memory means for storing the position when the recording medium is driven.