JPH07168674A - Electronic disk device - Google Patents

Abstract

PURPOSE:To confirm a discrepancy of data in its early stage and improve the reliability of the whole electronic disk device when data which are doubled on a 1st and a 2nd electronic disk are saved on a 1st and a 2nd magnetic storage device. CONSTITUTION:If a data comparison part 14 judges that 1st and 2nd data are discrepant when the 1st and 2nd data are saved on the 1st and 2nd magnetic storage devices 12 and 13 from the electronic disks 10 and 11 where the doubled data are written from a host device, a magnetic storage device control part 17 which can be operated and set through an operation part 18 controls the operations of the 1st and 2nd magnetic storage devices 12 and 13. Consequently, the discrepancy of the data can be confirmed and coped with in its early stage and the reliability of the whole electronic disk device is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic disk device using a semiconductor memory element, and more particularly to a duplicated electronic disk device.

[0002]

2. Description of the Related Art A conventional electronic disk device disclosed in Japanese Patent Application Laid-Open No. 4-209022 discloses first and second electronic disks for writing data from a host device, and the first and second electronic disks. First output from each
And a second magnetic storage device for saving the second data, a comparison circuit for comparing the first and second data, and a storage unit for storing the result, and are duplicated. When a mismatch occurs in the data, the contents are stored in the storage unit and the contents are displayed on the display unit, so that the contents of the mismatch can be confirmed and dealt with.

[0003]

The above-mentioned conventional electronic disk device has the following problems when the duplicated data does not match.
Since the operations of the first and second magnetic storage devices were not controlled, the mismatched data was stored in the first and second magnetic storage devices as they were. Therefore, confirmation and response regarding the content of the mismatch are delayed, and there is a problem in the reliability of the electronic disk device as a whole.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to make an early confirmation of the mismatch of duplicated data in the conventional electronic disk device described above and to improve the reliability of the entire electronic disk device. . Therefore, the electronic disk device of the present invention is duplicated by providing a magnetic storage device control unit for controlling the first and second magnetic storage devices and an operation unit for operating and setting the magnetic storage device control unit. It achieves the purpose of early confirmation of inconsistency of data and improvement of reliability of the entire electronic disk device.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration example of the present invention. In FIG. 1, an electronic disk device 19 according to the present invention
Is a first electronic disk 10 and a second electronic disk 11 for writing data from a host device, and a first magnetic storage for saving the data written in the first electronic disk 10 and the second electronic disk 11, respectively. Device 12, second
Magnetic storage device 13, a data comparison unit 14 for comparing the first and second data, a storage unit 15 for storing the comparison result of the first and second data, a display unit 16 for displaying, and a data According to the comparison result of the comparison unit 14, the magnetic storage device control unit 17 that controls the operations of the first magnetic storage device 12 and the second magnetic storage device 13, and the setting of the operation of the magnetic storage device control unit 17 and It is composed of an operation unit 18 for performing an operation.

Next, the operation of the circuit of FIG. 1 will be described. First electronic disk 10 and second electronic disk 11
The same data is written in the host device.
This data is transferred from the first electronic disk 10 to the first magnetic storage device 12 through the signal line 1 and the second electronic disk 1
1 is evacuated to the second magnetic storage device 13 through the signal line 2. At this time, the first data is input to the data comparison unit 14 through the signal 3 and the second data is also input to the data comparison unit 14, and the first data and the second data are compared.

Here, when the first data and the second data do not match, the data comparing section 14 outputs the mismatch information. The information is transmitted to the magnetic storage device controller 17 through the signal line 5. With this signal, the magnetic storage device controller 17 causes the first magnetic storage device 12 and the second magnetic storage device 12 to
The operation of the magnetic storage device 13 is stopped.

On the other hand, the mismatch information from the data comparison unit 14 is also sent to the storage unit 15 and the display unit 16 via the signal line 6, and the storage unit 15 stores the content of the mismatch, and the display unit 16 In addition to displaying an error, the operating statuses of the first magnetic storage device 12 and the second magnetic storage device 13 are displayed.

Here, in order to reactivate the first magnetic storage device 12 and the second magnetic storage device 13 which have been deactivated, the magnetic storage device control unit 17 and the operation unit 18 are operated.
The first magnetic storage device 12 and the second magnetic storage device 13 can be operated again by setting and operating the operation from. The operation unit 18 can be directly operated, but can also be controlled by a higher-level device.

In the present embodiment, the operation of the magnetic storage device is stopped when a mismatch occurs in the duplicated data, but the present invention is not limited to this and the setting of the operation unit 18 is not limited to this. And, the desired operation of the magnetic storage device can be obtained by performing the operation according to the conditions.

[0011]

As described above, the electronic disk device according to the present invention has the first and second electronic disks, and
When data is saved in the first and second magnetic storage devices, if a mismatch occurs between the first and second data, the conventional electronic disk device is operated by the magnetic storage device control unit and the magnetic storage device control unit. By providing an operating section for
By controlling the operation of the magnetic storage device, the inconsistency of data can be confirmed and dealt with early, and the reliability of the entire electronic disk device can be improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

[Explanation of symbols]

 10, 11 Electronic disk device 12, 13 Magnetic storage device 14 Data comparison unit 15 Storage unit 16 Display unit 17 Magnetic storage device control unit 18 Operation unit

Claims (4)

[Claims] 1. A first and a second electronic disk for writing duplicated data from a host device, respectively, and the first electronic disk.
And a first and second magnetic storage device for saving first and second data written to a second electronic disk, a data comparison unit for comparing the first and second data, and the first And the second data do not match, a storage unit that stores the content of the mismatch, and a display unit that displays the content of the mismatch,
An electronic disk device comprising a magnetic storage device control unit for controlling operations of the first and second magnetic storage devices. 2. The magnetic storage device control unit controls the operations of the first and second magnetic storage devices when the first and second data do not match. 1. The electronic disk device according to 1. 3. The electronic disk device according to claim 1, further comprising an operation unit for operating and setting the magnetic storage device control unit. 4. The electronic disk device according to claim 1, further comprising the operation unit that can be controlled by the host device.