JPH04344923A - Electronic disk subsystem - Google Patents

Abstract

PURPOSE:To enable the diagnosis of a faulty data storage part even when either of data storage part of a main system or of a standby system becomes faulty. CONSTITUTION:A device consists of a main system data storage part 2 and a standby system data storage part 3 provided respectively with a maintenance, display panel part 25, 35 which make an IC memory a storage element and instruct the diagnosis of itself, and besides, display a diagnostic result and a processor part 22, 32 which controls the diagnosis based on the instruction. The processor part 22 of the main system data storage part 2 is connected to the data buses of the main system data storage part 2 and the standby system data storage part 3 so as to control the diagnostic functions of both data storage parts. Besides, the processor part 32 of the standby system data storage part 3 is connected to the data buses of the standby system data storage part 3 and the main system data storage part so as to control the diagnostic functions of both data storage parts.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic disk subsystem, and more particularly to duplication of diagnostic functions when data storage sections are duplexed.

0002

[Prior Art] In a conventional electronic disk subsystem, diagnosis of the main data storage unit or the standby data storage unit is performed by
Diagnosis instructions are input from the maintenance panel of the data storage section of the system to be diagnosed, the processing is performed by the processor section of the data storage section, and the diagnostic results are displayed on the display panel of the data storage section.

0003

In the conventional electronic disk subsystem described above, the processor section in the main data storage section is connected only to the data bus in the main data storage section, and the processor section in the standby data storage section is connected only to the data bus in the main data storage section. Since it is connected only to the data bus in the standby system data storage unit, when diagnosing the main system data storage unit or the standby system data storage unit, the diagnosis must be executed only from the data storage unit of the system to be diagnosed. Therefore, if the diagnostic function of the data storage section stops working, there is a problem in that the data storage section cannot be diagnosed and maintenance work cannot be performed.

0004

[Means for Solving the Problems] The electronic disk subsystem of the present invention each uses an IC memory as a storage element,
It consists of a main system data storage section and a standby system data storage section, each having a maintenance/display panel section that instructs its own diagnosis and displays the diagnosis results, and a processor section that controls the diagnosis based on the instructions. A processor unit in the main data storage unit is connected to a data bus between the main data storage unit and the standby data storage unit to control the diagnostic function of both data storage units, and a processor unit in the standby data storage unit The diagnostic function of the data storage section is connected to the data buses of both the standby data storage section and the main data storage section to control the diagnostic functions of both data storage sections.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings.

FIG. 2 is a system block diagram for implementing the invention. 1 is a control unit that controls the data storage unit;
2 is a main data storage section, and 3 is a standby data storage section.

FIG. 1 is a block diagram of one embodiment of the present invention. 21, 31 are port sections, 22, 32 are processor sections, 23, 33 are common control sections, 24, 34 are memory sections,
25 and 35 are maintenance/display panel sections.

[0008] 26 and 36 are common buses, and 27 and 37 are common buses.
is a signal line between the common bus and the processor units 22 and 32, 28 is a signal line between the common bus between the processor unit 22 and the standby data storage unit 3, and 38 is a signal line between the processor unit 32 and the main data storage unit This is a signal line between two common buses.

Next, the operation of this embodiment will be explained using FIG. 1.

When diagnosing the main data storage section 2, a diagnosis instruction is input from the maintenance/display panel section 25. However, if the processor section 22 cannot accept instructions from the maintenance/display panel section 25 due to some kind of failure or the diagnostic function does not work, the instructions for diagnosis are sent from the maintenance/display panel section 35 of the standby data storage section 3. throw into.

The processor section 32 receives this instruction and executes diagnosis of the main data storage section 2 through the signal line 38.
The diagnosis results are displayed on the maintenance/display panel section 35.

0012

Effects of the Invention As explained above, in the present invention, when executing diagnosis of one data storage unit, even if an event occurs in which the diagnostic function from that data storage unit does not work, the diagnosis function of the other data storage unit is not activated. This has the effect that maintenance work can be carried out because the diagnosis can be performed from the beginning.

[Brief explanation of drawings]

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

FIG. 2 is a system block diagram for implementing the present invention.

[Explanation of symbols]

1 Main control unit 2 Main data storage unit 3 Standby data storage unit 21, 31 Port unit 22, 32 Processor unit 23, 33 Common control unit 24, 34 Memory unit 25, 35 Maintenance/display panel unit 26, 36
common bus

Claims (1)

[Claims] [Claim 1] Each of them uses an IC memory as a storage element, and a maintenance/maintenance system that instructs its own diagnosis and displays the diagnosis results.
It consists of a main system data storage section and a standby system data storage section that have a display panel section and a processor section that controls diagnosis based on the instructions thereof, and the processor section in the main system data storage section is connected to the main system data storage section. and the standby data storage section to control the diagnostic function of both data storage sections, and connect the processor section in the standby data storage section to the standby data storage section and the main data storage section. An electronic disk subsystem connected to data buses of both data storage units to control diagnostic functions of both data storage units.