JPH05289951A - Electronic disk device - Google Patents

Abstract

PURPOSE:To quicky find a failure by diagnosing the saving/restoring operation of data in a saving magnetic disk device in each fixed time. CONSTITUTION:An unused address storing part 6 for storing the addresses of unused parts at the time of formating a data storing part 3 is prepared and a saving magnetic disk control part 4 reads out the contents of the storage part 6 at the timing of a fixed time generated from a timing generating part 7 and diagnoses data saving/restoring operation between the saving magnetic disk device 5 and the data storage part 3 by using the unused parts of the storage part 3. At the time of detecting abnormality as a diagnostic result, the control part 4 reports the detection to a host device 8 through an I/O execution control part 2.

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, and more particularly to an electronic disk device used for an information processing device.

[0002]

2. Description of the Related Art A conventional electronic disk device is used for diagnosing a save magnetic disk device during system operation.
It is performed by starting a diagnostic command by maintenance personnel.
It was the operation of the save magnetic disk device alone.

[0003]

However, in the conventional electronic disk device described above, when diagnosing the save magnetic disk device during the system operation, the diagnostic command is activated by the maintenance staff and the contents of the diagnostic command are executed. Is limited to the operation of the save magnetic disk device alone, and the data saving between the data storage unit and the save magnetic disk device and the diagnosis of the re-storing operation are not performed.
There is a drawback that a failure may be discovered only when the re-storing operation is performed.

[0004]

An electronic disk device according to the present invention comprises a data storage section composed of a semiconductor memory,
A save magnetic disk device that saves the contents of the data storage unit when the power supply fails or the system stops, an unused address storage unit that stores an address of a portion that is not used when the data storage unit is formatted, and a fixed time Timing generating means for generating a pulse every other time, reading the address of the unused address storage means and writing the test data to the unused portion of the data storage unit. Saving and re-storing the test data in the save magnetic disk device. And a save magnetic disk control means for performing a series of operations of checking re-stored data at the timing when the timing generation means generates, and the save magnetic disk control means sequentially saves data to the save device, If an abnormality is found by checking the re-storing operation It is I to report to that effect to the host device
/ O execution control means.

[0005]

Embodiments of the present invention will now be described with reference to the drawings.

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

The electronic disk device 1 shown in FIG. 1 is composed of a semiconductor memory, and stores data in a data storage unit 3 and writes / reads the data storage unit 3 in response to an input / output command from a host device. / O execution control unit 2,
Data storage unit 3 in case of power failure or system shutdown
The save magnetic disk device 5 for saving the data of the above, the save magnetic disk control unit 4 for controlling the data transfer between the data storage unit 3 and the save magnetic disk device 5, and the data storage unit 3 by the I / O execution control unit 2. It is configured to include an unused address storage unit 6 that stores an address of a portion that will not be used when formatted, and a timing generation unit 7 that generates a pulse at regular time intervals.

Next, the operation of the embodiment shown in FIG. 1 will be described.

Prior to the operation of the electronic disk device 1, I /
The O execution control unit 2 formats the data storage unit 3, and informs the unused address storage unit 6 of the address of the unused portion on the data storage unit 3 generated at this time.

The save magnetic disk controller 4 uses the pulse generated by the timing generator 7 at regular intervals during the operation of the electronic disk 1 as an opportunity to store the unused address memory 6
Is read out, the test data is written in an unused portion of the data storage unit 3, and the written test data is saved in the save magnetic disk device 5 and stored again.

The re-stored data is compared with the test data first written in the data storage unit 3, and if the comparison result is different, the I / O execution control unit 2 is notified and the I / O execution control unit 2 is notified. The O execution control unit 2 reports to the host device that the save / restore operation is abnormal.

[0012]

According to the electronic disk device of the present invention, by diagnosing the data saving / re-storing operation between the data storage unit and the save magnetic disk device at regular intervals during operation,
There is an effect that a failure can be detected early.

[Brief description of drawings]

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

[Explanation of reference numerals] 1 electronic disk device 2 I / O execution control unit 3 data storage unit 4 save magnetic disk control unit 5 save magnetic disk device 6 unused address storage unit 7 timing generation unit 8 host device

Claims (3)

[Claims] 1. A data storage unit comprising a semiconductor memory, a save magnetic disk device for saving the contents of the data storage unit when a power supply fails or the system is stopped, and a data storage unit used when the data storage unit is formatted. An unused address storage means for storing the address of the lost portion, a timing generation means for generating a pulse at fixed intervals, and an address of the unused address storage means for reading the test data to the unused portion of the data storage portion. Writing the save magnetic disk control means for performing a series of operations of saving test data to the save magnetic disk device, re-storing it, and checking the re-stored data at the timing when the timing generating means generates, and the save magnetic disk control means. The disk control means sequentially transfers data to the save device. An electronic disk device comprising: an I / O execution control means for reporting the fact to an upper-level device when an abnormality is found by checking the data saving / re-storing operation. 2. An unused address is stored when the data storage unit is formatted, test data is written to the data storage unit indicated by the unused address read at regular time intervals, and the written test data and read data are read. An electronic disk device, which compares the test data with the tested data and reports it to a higher-level device when they do not match. 3. An electronic disk device comprising a save magnetic disk device that writes test data to an unused area of a data storage unit and saves and restores the data at regular time intervals.