JPS62182830A - Total data saving system for magnetic disk device - Google Patents

Abstract

PURPOSE:To minimize the effects of a fault and to decide accurately the factor of the fault by recording the information with which the factor of the fault can be known in terms of the change with the lapse of time and at the same time detecting said information to carry out a protecting action. CONSTITUTION:A magnetic disk device 1 and a recorder part 2 which records the information on the factor of a fault of the device 1 are connected to a control part 3 connected to the channel of a CPU. Under such conditions, the information with which the factor of the device 1 is known in terms of the change with the lapse of time is recorded to the part 2. Thus the part 3 detects a fault if occurs and can perform a protecting action to allocate a substitute device for the device 1. In such a way, the factor of the fault is known more clearly and can be decided more accurately.

Description

[Detailed Description of the Invention] [Summary] A magnetic disk device total data save method,
This system records information that can be used to determine the cause of an abnormality over time, and performs defensive actions by detecting this information, thereby minimizing damage and making accurate decisions in the event of a failure.

[Industrial application field]

The present invention relates to a magnetic disk device total data saving system.

In magnetic disk drives, when an abnormality occurs, accurate judgment must be made and data must be prevented from being destroyed. To this end, it is necessary to adopt a total data saving method, such as monitoring and recording the causes of various abnormalities and, once an abnormality occurs, disconnecting the abnormal device and replacing it with a replacement device.

[Conventional technology]

In the conventional method, Fault is created from ECC data.
The status of the magnetic disk drive was known by the 5ynpton code (FSC). It is detected whether this FSC is a predetermined value or not, and if it is wrong, it is determined that an abnormality has occurred.

Furthermore, an alarm lamp was provided on the operator panel, and it was determined whether the magnetic disk drive was normal or abnormal based on the blinking operation of this lamp.

[Problem that the invention seeks to solve]

However, the conventional method described above provides extremely little information as a total data saving method. For example, there was no chronological record of how the equipment went down.

For this reason, it has not been possible to simply send the generated alarm to a higher-level device, but to form a closed loop by feeding it back to its own device and take defensive actions.

Therefore, the conventional method has the problem that accurate judgment cannot be made when an abnormality occurs.

[Means for solving problems]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to make an accurate judgment when an abnormality occurs in a magnetic disk device by detecting the state in which the device has been used up until then.

The means for this purpose, as shown in FIG. 1, is to connect a magnetic disk device 1 and a recorder section 2 for recording information that causes an abnormality in the device 1 to a control section 3 connected to a channel of the CPU. It looks like this.

[For production]

As described above, according to the present invention, by connecting the magnetic disk device 1 and the recorder section 2 to the control section 3, information that can be used to determine the cause of abnormality in the magnetic disk device 1 over time is recorded in the recorder section 2. If an abnormality occurs, the control unit 3 can detect it and take protective actions such as allocating an alternative device to the magnetic disk device l.

Therefore, the cause becomes clearer than before, and accurate judgment can be made.

〔Example〕

The invention will now be explained by way of example with reference to the accompanying drawings.

FIG. 2 is a diagram showing an embodiment of the present invention.

A magnetic disk device 1 used in the present invention is placed in a locker, and a disk controller 31 is connected via a printed board.
A control section 3 consisting of the following is connected.

Under this configuration, the abnormality occurrence cause information recorded in the recorder section includes the following.

A temperature sensor is connected to the magnetic disk drive 1, and the temperature (■) inside the magnetic disk can be measured, and the head read output (■) can be determined from the R/W switch.

A power supply unit is also installed inside the locker, and a power alarm (■) is generated in the event of an abnormality.

Furthermore, a printed board is provided in the locker, and an index signal (■) of disk rotation is determined from the servo mechanism of the magnetic disk device l.

The temperature inside the locker (■) can be determined using a normal thermometer.

Other information includes FSC (■), R/W data (■
), seek R/W control data (■), which are always sent to the disk controller 31 via the printed board, and voltage and current (■) can be measured by providing sensors on the printed board and the power source.

The above-mentioned various information is recorded on a recorder section consisting of a magnetic recording medium (for example, a flombi disk, a magnetic card, a bubble cassette, etc.), a tape, a metal plate, etc.

Further, this recorder section may be in the form of an endless record or a time setting record.

The abnormality cause information recorded in the recorder section is constantly monitored by the disk controller 31.

When the disk controller 31 detects an abnormality, for example, if the current is abnormal, it cuts off the power and performs defensive operations such as assigning a substitute device. Also, during this time, the recorder continues to record.

This operation can be configured using both software and hardware, and an alarm can be displayed on a display or the like when an abnormality occurs.

〔Effect of the invention〕

As described above, according to the present invention, by connecting a magnetic disk device and a recorder section to a control section, information that can be used to determine the cause of an abnormality in the magnetic disk device over time is recorded in the recorder section, so that an abnormality can be detected. In such a case, the control unit can detect this and take protective actions such as allocating an alternative device to the magnetic disk device.

Therefore, the cause becomes clearer than before, and accurate judgment can be made.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the principle of the present invention, and FIG. 2 is a diagram showing an embodiment of the present invention. 1... Magnetic disk device, 2... Recorder section, 3... Control section. Figure 1: Principle diagram of the present invention

Claims (1)

[Claims] A recorder unit (2) and a magnetic disk device (1) are connected to a control unit (3) connected to a CPU, and the recorder unit (2) is provided with information on the cause of abnormality in the magnetic disk device (1). records information that can be determined over time, and the control unit (3) monitors this, and if an abnormality occurs, the control unit (3) disconnects the abnormal magnetic disk device (1) and replaces it. A magnetic disk device total data save method that is characterized by allocating devices.