JPS58127253A - Switching device - Google Patents

Abstract

PURPOSE:To improve the reliability of an information processing system, by setting a spare device after cutting off a faulty device, and at the same time, repairing the faulty device while it is connected to a test device, and storing the faulty device as a spare device. CONSTITUTION:When a fault occurred in a controller A1 in the state of controllers A1 and A2 among controllers A1-A4 are connected to devices B1 and B2 to be controlled respectively via a connecting part 4. In such a case, a monitor device (not shown in the diagram) sends a switch command signal C' containing a number of the controller A1 to a register 1 and a control part 3. The part 3 cuts off the controller A1 from the controller B1 and outputs a command to the part 4 to connect the controller A3 to B1 by the number A3 of a spare device at the 2nd stage of a shift register 2. The part 3 outputs the next command to the part 4 to connect the controller A1 to a test device B3 and stores the number of the controller A1 at the 1st stage of the register 2 in the form of a spare device after the repair is over.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a backup switching device for an information processing system KtIP, and particularly to a switching device KWIJ of a complete group switching system.

In baggage processing systems, in order to improve the reliability of the system, redundancy is usually added to the system, and when a failure occurs in the equipment that makes up the system, a switching device operates a switching function to prevent failure from occurring. We are disconnecting devices from the system and incorporating spare devices into the system.

Conventionally, with this pigeon house and switching device, the spare device is physically fixed, and when a faulty device occurs, it switches to the spare scissor stirrup.
- The so-called fixed backup system was used, and the backup device did not exist until the faulty device was restored through repair etc. and was replaced with the backup device and incorporated into the system (switched back). The 1 meter pipe of the system becomes complicated and the system 04611 has to be interrupted to be cut and put back together.

Previously, in the complete group switching system that does not require switching back, it is necessary to constantly manage which devices are in reserve pressure, which poses problems in terms of system management such as erroneous operation.

The present invention addresses the above-mentioned drawbacks and provides a tenth device group and a test device I.
It is located between the test equipment and the second equipment group including the I!, and controls the connection relationship between the equipment group and the second equipment group, and disconnects the faulty equipment and connects the test equipment to the I! Then, a switch is made to incorporate a spare device into the system in place of the faulty device, and the faulty device is replaced with the test device! In order to significantly improve the reliability and availability of the Information II & Satoshi system, the switching device of the complete group switching method will be installed. The offer is N-like.

The present invention will be explained below based on aglIifK.

The 1st I% Il is a block diagram of the system system of the information processing system including the switching device for switching from this device, and the block diagram of the switching device for 211th There are 94 steps shown in the flowchart. 1st
In the figure, M1, A2, As, and M4 are control devices having the same functions, forming a device group of 1111. Bl, B2 are controlled devices forming the 20th device group, and the control devices AI, M2. Mu3. connected to either system 4. i13#i 8th outfit fl! This is for the purpose of continuing to repair a faulty control device that is in good condition when a fault occurs in the test equipment that is used with the FK. S is a switching device located at the junction between the first device group and the second titan group.
, A3, controls the connection relationship between the module 4, the controlled device 11, the grave 8, and the test device B3. C is a system monitoring device which issues a switching command signal C' to the switching device 18 when an abnormality occurs in the system due to an fK failure.

In the system of FIG. 1, the control device AI.

Systems 2, A3, and A4 are redundant for the controlled devices. Control device AI, A2,
A3, two of the control devices in the system are backup devices that are not involved in the actual processing of the system, and if a failure occurs in the other two control devices that are involved in the system processing, a failure will occur. It is a rounded 4 that is incorporated into the system and performs processing in place of the 9 control device. Note that the command signal to the switching device 8 is not only the signal C' from the system monitoring device C but also the switching device 8.
I can also give instructions to my own settings from the nine-control panel.

A detailed explanation of the switching device 8 will be given with reference to FIG.

1 is a register that stores the number of the switching designated control device (faulty device) included in the switching command signal C' from the monitoring device 111c, and 2 stores the numbers of two spare devices. It is a two-stage shift register that can shift the stored contents. Reference numeral 3 designates a switching control section that performs control based on the switching command signal C', the output signal from the shift register 1, and the output signal IK from the shift register J2, and is located between the 1oth scissors group and the 20th device group. In the device group, the control device AI-A2 IA3, .

- For example, control device AI, M2. Mu3. If the control devices of A4 and A2 are connected to the controlled devices Bl and B2, respectively, and the control devices of A3 and A4 are backup devices, the control device A1 fails and Then watch! i! Station C detects this failure and switches over to the control device Al.
The switching command signal C' containing the register 1 and the switching control sI
K emits. As a result, the register 111 fails and the number A1 of the control device 9 is input and stored, and the switching control unit 3Fi is operated by inputting the switching signal. When the number AI of the faulty Kuseien device is input from the switching control unit 3Fi register 1 by the signal DK, the faulty Maru control device AIKmII! Detects the number B1 of the controlled device currently in operation, and instructs the second control unit 4 to break down and disconnect from the control unit A1. When the number A3 of the standby device is input by the signal E, the controlled device Bl and the control device M3t! ! The connection unit 4 is commanded to continue. On the other hand, when the shift register 2 outputs the number A3 of the backup control device stored in the second stage t-, the number A4 of the backup control device stored in the first stage tlK is output.
Shift to the second stage.

The switching control unit 3 also instructs the connection unit 4 to connect the failed control device AI to the test device B3.

When the failure is repaired and the normality is established while the control device AI is connected to the test device B, a command signal is sent from the system monitoring device C to the switching control unit 3 to make the control device AI a standby device. C' is output. Based on this command, the switching control unit 3 stores -RtilKml of the shift register 2 as a preliminary control device.

The order of these operations is represented by t-flow IIm, and the third Ill
.

It's like K.

As described above, according to the present invention, a faulty device in an information processing system is disconnected from the system, a switch is made to incorporate a new spare device, and the faulty device is connected to a test device in good condition. The reliability and availability of the information processing system can be significantly improved by repairing it, storing it as a backup device, recognizing it, and burying it.

[Brief explanation of drawings]

FIG. 1 is a system diagram of an information processing system including a switching device according to the present invention, and FIG. 2 is a block diagram of an embodiment of the switching device according to the present invention, and shows a control operation flow IiI in the third WJd switching device. AI, A2. A3. A4... (of the first device group)
Device Bl, B2...Controlled device B (of the second device group)
3...Test device C...System monitoring device S...Switching device 1...Register 2...
Shift register 3...Switching control unit 4...Connection unit Applicant: NEC Corporation Figure 1 Figure 2 818283 Figure 3

Claims (1)

[Claims] A device group consisting of an lll0 device group consisting of value number O devices and a plurality of other devices, including a test device for confirming the normality of at least one device of the first device group. located between each device in the 140th device 1 and the test device ft in the second device group.
-M with each device including! In the switching device for controlling the connection relationship, a register and a control means for inputting a switching command signal with switching designation of at least one device among the devices belonging to the device group 1111, and the first device group It has a shift register for storing a device that is not connected to any of the devices belonging to the J12 device group among the devices to be shut down, and the first device is designated by a 411 number when the switching command signal is input. When the equipment in the second equipment group is disconnected from the nine equipment in the connection relationship of the equipment group II2 and connected to the test equipment, the second equipment group K is disconnected.
tIP to transfer the device to the first device group stored in the shift register JK and W! A switching device that is timely to continue.