JPH08314809A - Computer system - Google Patents

Abstract

PURPOSE: To obtain the backup function for information at a different type of computer by transforming the format of that information and making another normal computer back up it when any abnormality has been generated at a certain computer. CONSTITUTION: A CPU #1 is a computer for performing main job processing, and a CPU #2 is a computer for executing a function corresponding to backup and for performing a job by functions different from the CPU #1. Besides, an main memory supporting storage backup device between different kinds of computers 3 is arranged between the CPU #1 and the CPU #2 and connected to the respective CPU. This main memory supporting storage backup device 3 is provided with a computer condition file 30 and main memory supporting storage information files 31 and 32 of the respective CPU #1 and #2 or the like. Then, plural inter-computer storage conditions are set in advance and when any abnormality is generated at a certain computer, its information is transformed into a format to be recorded in the other normal computer, and backed up by the other normal computer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer system having a function of backing up information.

[0002]

2. Description of the Related Art Conventionally, in a computer system, there is a large economic burden for countermeasures against abnormalities, and it has been desired to construct a system for countermeasures against abnormalities at low cost.

Normally, a computer system is constructed by connecting a plurality of computers, and different types of hardware may be connected, or the storage forms of the main memory and auxiliary memory inside each computer are different. In some cases. In other words, some computer systems of this type have a configuration that cannot duplicate memory.

In this case, it is necessary to back up the data because another computer cannot cover the abnormality at the time of abnormality, but for this purpose, it is necessary to connect the computers having the same storage form to the system.

On the other hand, in the computer system, the
There are two methods of duplicating, that is, storing the same contents on two computers and a method of duplicating information on an information storage medium such as a floppy disk or hard disk. is there.

[0006] For example, in the case of a method of backing up with two computers, it is necessary for each user to have two pieces of hardware having the same storage format in order to construct a duplex system, which is economical for system construction. The burden is heavy.

Further, in the case of a system using an information recording medium, a floppy disk or the like lacks reliability in medium-to-long term storage. Therefore, if you build a duplex system, you will add a general-purpose computer, that is, a hard disk, etc. to the computer, but in this case, a computer with a large storage capacity is expensive and purchase money The 2
You will have a set.

By the way, many users already have a plurality of computers.

However, the storage form of each computer, that is, the hardware configuration is often different, and in this case, they cannot be connected to each other to form a duplex system. Therefore, reliability is ensured (non-stop)
Many people are buying new ones (hardware with the same mechanism) to do so.

[0010]

As described above, in the conventional computer system described above, hardware conditions (memory specifications, etc.)
It is practically impossible to back up the stored information between different computers that do not match.Currently, when duplicating the system, one of the computers is replaced with a computer that can duplicate. is there.

In addition, even if the system can be duplicated and backed up, it is not possible at low cost to automatically restore the stored information backed up in one computer.

In other words, if the system is started up and operated in a situation in which it is not possible to make a trial judgment of data matching for saving data and performing data simulation to check whether the data is correct and whether the data is leaked, etc. At present, we have no choice but to deal with abnormalities that are good, and it is hard to say that this is a reliable backup.

The present invention has been made to solve such a problem, and an object thereof is to provide a computer system which can realize a reliable backup function at a low cost.

[0014]

According to a first aspect of the present invention, there is provided a computer system comprising a plurality of computers connected to each other to back up the information stored in each computer in order to achieve the above-mentioned object. In, storage condition setting means for setting storage conditions of information stored in each computer, abnormality notifying means for detecting an abnormality in each computer and receiving the information from the computer having the abnormality, and the abnormality notification Storage means for converting the information received by the means into a predetermined format based on the storage condition set by the storage condition setting means and temporarily storing the information; and information temporarily stored by the storage means And an abnormal time response means for converting the data into a format recordable by a normal computer and backing up to the normal computer.

According to a second aspect of the present invention, there is provided a computer system according to the first aspect, wherein the restoration notifying means for notifying that the abnormal computer has been restored, and the restoration notifying means, The information processing apparatus further includes a restoring unit that restores the information backed up by the abnormality handling unit to the original computer.

A computer system according to a third aspect of the present invention is
The computer system according to claim 1, further comprising a recovery notifying means for notifying that the computer that has fallen into an abnormality is recovered.
When notified by the recovery notifying means, a simulation means for checking the difference between the information backed up by the abnormal time handling means and the information stored in the original computer, and the simulation result of the simulation means, there is a difference between them. If there is, it has a correction means for correcting the information.

[0017]

According to the first aspect of the present invention, the storage conditions between a plurality of computers are set in advance, and when an abnormality occurs in one computer, the information is converted into a format that can be recorded in another normal computer. Make another normal computer back up.

Therefore, it is possible to realize a backup function of information on different computers.

According to the second aspect of the invention, when the abnormal computer is restored, the information backed up in another normal computer is automatically restored to the original computer without user intervention.

Therefore, it is possible to easily restore the information of each computer.

Further, in the invention described in claim 3, the information after the restoration is simulated, and the information packed up by the simulation can be checked.

Therefore, the reliability of the data can be ensured.

As a result, a reliable backup function can be realized inexpensively among a plurality of computers.

[0024]

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

FIG. 1 is a diagram showing the configuration of a computer system including a heterogeneous computer main memory auxiliary storage backup device according to an embodiment of the present invention, and FIG. 2 is a diagram showing details of the heterogeneous computer main memory auxiliary storage backup device. Is. It should be noted that although the description of this embodiment is made for the case of the main memory, the same applies to the case of the auxiliary memory, and the description thereof will be omitted.

As shown in FIG. 1, this computer system comprises a CPU # 1, a CPU # 2, a heterogeneous computer main memory auxiliary storage backup device 3, a console monitor 4, a keyboard 5, a Kanji serial printer 6 and the like. There is.

The CPU # 1 is a computer for performing this task processing. CPU # 2 is a backup-compatible function and CPU
It is a computer that performs different tasks different from # 1. The main memory auxiliary memory backup device 3 between different types of computers is the CPU # 1 and C.
It is arranged between PU # 2 and connected to each of them. This heterogeneous computer main memory auxiliary storage backup device 3 is a computer condition file 30 and each CPU # 1, #
It has two main storage auxiliary storage information files 31, 32 and the like. The console monitor 4, the keyboard 5, and the Kanji serial printer 6 are input / output devices for requesting input / output of information, checking / inquiring, and outputting information.

The CPU # 1 and the CPU # 2 are computers of different types (heterogeneous computers), and have different processing forms. Both computers (CPU # 1 and CPU # 2) are going to move from CPU # 1 to CPU # 2
It has an application capable of performing the same task from # 2 to CPU # 1.

As shown in FIG. 2, the heterogeneous computer main memory auxiliary storage backup device 3 joins the main memory and auxiliary memory of the CPU # 1 with the computer main memory auxiliary memory notifying means 10 for the CPU # 1 and the CPU # 1. CPU # 1 main storage auxiliary storage data conversion means 11 for converting to a data format that operates in
Computer condition file 30, which is the core of this device, CPU #
1, CPU # 2 ... Backup means 12 for managing main storage auxiliary storage information such as CPU # N, main storage auxiliary storage data conversion means 13 for CPU # 2 for converting to computer data of CPU # 2, main of CPU # 2 CPU # 2 main memory auxiliary storage notification means 14 connected to the storage and auxiliary storage, backup data abnormal time response means 15 for backup management at the time of abnormality, abnormal time recovery means 16 for performing abnormal recovery measures, and various conditions of the computer are set. Computer condition creating means 17, data trace simulation means 1 for checking whether or not the data backed up in the main memory and auxiliary memory of the computer are correct and outputting the result of simulation
It consists of 8 etc.

As shown in FIG. 3, computer condition file 3
0 is a storage configuration 31 of main memories and auxiliary disks of a plurality of CPUs (computers) # 1 to #N, and CPUs # 1 to #.
Memory transfer information between N (memory transfer table, auxiliary disk transfer table, etc.) 32, each CPU # 1
Up to #N condition rule table 33 and down information 34 of each computer are managed. It is assumed that CPU # 1 uses addresses 100 to 1000 as a data area. The CPU # 2 is assumed to be using the data from the addresses 1000 to 1900.

Next, the operation of this computer system will be described.

In this computer system, the CPU # 1 having the function of receiving the backup information of the main memory auxiliary storage information when the data to be backed up changes in each data of the main memory or the auxiliary memory of the CPU # 1. Computer main memory auxiliary memory notification means 10 is the computer condition file 3
The storage condition of the computer is taken out from 0, and it is judged whether it is the backup target or not, and the reception format of the backup information from the CPU # 1.

CPU # 1 main memory auxiliary memory notifying means 10
After receiving the information of the main storage auxiliary storage, notifies the data received from the CPU # 1 to the CPU # 1 main storage auxiliary storage data conversion means 11 in order to convert it to the backup information form.

The CPU # 1 main storage auxiliary storage data conversion means 11 recognizes the presence / absence of data conversion, the backup mode, and the conversion type from the computer condition file 30, recognizes the data according to various conversion formats, and notifies the backup means 12.

The backup means 12 checks whether or not the CPU # 2 has backed up from the computer condition file 30 and checks the CPU # 1 main storage auxiliary storage information file 3
1, converted CPU # 2 main memory auxiliary memory information file 3
Notify 2.

When it is necessary to immediately notify the data of the CPU # 1 to the CPU # 2, the backup means 12 makes a judgment from the computer condition file 30 and uses the CPU # 2 main memory for the CPU # 2 computer notification. Notify the auxiliary storage data conversion means 13.

The CPU # 2 main memory auxiliary storage data conversion means 13 extracts the conversion condition for notifying the CPU # 2 from the computer condition file 30 and after converting the data according to the conversion mode, the CPU # 2 main memory auxiliary storage notification means 14 Will be notified to.

The CPU # 2 main memory auxiliary storage notification means 14 notified of the converted data notifies the CPU # 2 as main memory auxiliary storage backup information.

In the recovery processing from the abnormal time, the backup processing is performed after the CPU down information is received from the CPU # 1 main memory auxiliary storage notification means 10, so that the backup data abnormal time response means 15 is first requested to back up. From this, the abnormality recovery means 16 performs an abnormality recovery process.

In this case, the abnormality recovery means 16 uses the computer condition file 30 as a basis for preparing the information for preparation for the abnormality recovery in the CPU # 1 main memory auxiliary storage information file 31, CPU
# 2 is set in the main memory auxiliary storage information file 32, and the backup data abnormality response means 15 is instructed to make a backup request of the main memory auxiliary storage information.

The backup data abnormality responding unit 15 that has received the backup request instruction is the backup unit 1.
2 to the CPU # 1 for notifying the CPU # 1 main storage auxiliary storage information to the CPU # 2, and through the CPU # 2 main storage auxiliary storage data conversion means 13 and the CPU # 2 main storage auxiliary storage notification means 14. , CPU # 2 is CPU # 1
Back up the information in.

As a method of receiving the backup request, CP
There is also a method of receiving from U # 2.

In this case, in the data trace simulation means 18, the processing is performed by the user request by the console monitor 4 and the keyboard 5, and the CPU # 1 main memory auxiliary storage information file 31 and CPU processed by the abnormality recovery means 16. # 2 main memory auxiliary memory information file 3
The data of 2 is simulated and the difference between the data is checked, and the result is output to the Kanji serial printer.

Data of conditions for making various judgments is managed by the computer condition file 30 and is processed by the computer condition creating means 17 by requesting retrieval, correction, etc. from the console monitor 4 and the keyboard 5. The processing result can be output by the console monitor 4 and the Kanji serial printer 6.

In this way, the backup, restoration processing, and data check processing of the main storage auxiliary storage can be performed under the computer conditions in which the conditions of different types of computers are preset.

Next, a specific operation example of this computer system will be described with reference to FIG.

For example, if CPU # 1 goes down during operation, C
The CP that was interrupted by passing main memory information to PU # 2
A case where the CPU # 2 performs the work of U # 1 instead will be described.

In this case, the main memory information of the CPU # 1 is C
Through the PU # 1 main storage auxiliary storage notification means 10, the CPU # 1 main storage auxiliary storage data conversion means 11 and the backup means 12, to the CPU # 1 main storage auxiliary storage information file 31, from the main storage address 100 to 1000 All change states of are stored.

In the main memory of CPU # 2, CPU # 1
CPU # even if different tasks are performed after 2000
CPU # 2 main memory auxiliary memory notifying means 14, C
All are stored in the main memory auxiliary memory information file 32 of the CPU # 2 via the PU # 2 main memory auxiliary memory data conversion means 13 and the backup means 12.

In this state, the CPU
If # 1 invites a computer down, the work stops and the CP
The U # 2 is notified of the result immediately before the down of the main memory of the CPU # 1. When resuming the same task, the computer main memory notifying means B1 of the CPU # 1 judges the computer down information from the CPU # 1 and the backup data abnormality response means 1
I will handle the abnormalities to 5.

In the map creation and rule of the data corresponding to the abnormality, the abnormality recovery means 16 sets the corresponding data to be backed up to the CPU # 1 under the condition of the computer condition file 30.
After the main storage auxiliary storage information file 31 is created by the CPU # 2 main storage auxiliary storage information file 32, the backup data abnormality response unit 15, the backup unit 12, and the main storage auxiliary storage data conversion unit 13 of the CPU # 2.
Also, the main storage information of the CPU # 2 is notified via the CPU # 2 main storage auxiliary storage notification means 14 and the business data is delivered. This abnormality occurs when the CPU # 1 is unlikely to recover, and in such a case, the alternative CPU # 2 is used.

On the other hand, when the recovery of the CPU # 1 can be immediately performed, not the data notification of the CPU # 2 but the notification of the CPU # 1 main storage auxiliary storage information file 31 which is the backup information of the CPU # 1, and when the backup data is abnormal Correspondence means 15, abnormality recovery means 16, backup means 12,
CPU # 1 main memory auxiliary memory data conversion means 11 and C
Recovery is performed via the computer main storage auxiliary storage notification means 10 of PU # 1.

As described above, the computer condition file 30 is C
PU # 1's 100th address is set so that the application is linked to CPU # 2's 200th address, and the rule of main memory is that the calculation result of 100th address is half of 110th address. It is also possible to set a "confirmation condition" that results in 1.

This “verification condition” is used by the data trace simulation means 18.

Data trace simulation means 18
Checks the data inconsistency, outputs the list output to the Kanji serial printer 6, and simulates interactively with the console monitor 4 and the keyboard 5. Therefore, the data inconsistency can be corrected.

As described above, according to the computer system of the present embodiment, the function for coping with abnormalities, which is conventionally provided in each computer, especially the backup function for each information of the main memory and the auxiliary memory at the time of failure is provided between different computers. By providing the main memory auxiliary storage backup device 3 with the hardware specification conditions of each computer arbitrarily set and selected in the computer condition file 21, each memory content is backed up between different computers in the event of an abnormality. Therefore, it is possible to omit the function for countermeasures against abnormalities from each computer. Therefore, even if the computer that the user currently possesses does not have a function for coping with abnormal situations, by connecting to the heterogeneous computer main memory auxiliary storage backup device 3, the computer information can be backed up.

That is, since information can be backed up in the event of a computer abnormality without considering the hardware conditions of the computer, information can be backed up even in a computer with an inexpensive hardware configuration, and automatic operation from an abnormality can be performed. Recovery becomes possible.

Further, since the heterogeneous computer main memory auxiliary storage backup device 3 has a recovery function for checking the consistency and simulating the data of different computers, the abnormality handling should be performed by the selection operation from another computer. You can

In the above embodiment, CPU # 1 and CPU # are used.
2 has been described, that is, the case where the number of computers is 2. However, in addition to this, as shown in FIG.
A large number of correspondences up to CPU #N are also possible. In this case, the computer condition file 30 needs to have conditions set for the computers to be managed.

[0060]

As described above, according to the first aspect of the present invention, the storage condition between a plurality of computers is set in advance, and when an abnormality occurs in a computer, the information is sent to another normal computer. Since it is converted into a format recordable by a computer and backed up by another normal computer, a backup function of information in a heterogeneous computer can be realized.

According to the second aspect of the present invention, when the abnormal computer is restored, the information backed up in another normal computer is automatically restored to the original computer without user intervention. , Information of each computer can be easily restored.

Further, according to the invention described in claim 3, since the information after the restoration is simulated and the information packed up by the simulation can be checked, the reliability of the data can be secured.

That is, by providing a backup device externally connected with the backup function that each computer originally had independently, each information of the main memory and the auxiliary memory between different computers is comprehensively backed up. Then, the backup function for that amount can be omitted from each computer, and the entire system can be constructed at low cost.

As a result, a reliable backup function can be realized inexpensively among a plurality of computers.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a computer system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a main memory auxiliary storage backup device between different computers of this computer system.

FIG. 3 is a diagram showing a computer condition file of a main memory auxiliary storage backup device between different types of computers.

FIG. 4 is a diagram showing another embodiment.

[Explanation of symbols]

# 1, # 2, #N ... CPU (computer), 3 ... Heterogeneous computer main storage auxiliary storage backup device, 4 ... Console monitor (CRT), 5 ... Keyboard, 6 ... Kanji serial printer, 10 ... CPU # 1 main Memory auxiliary memory notification means,
11 ... CPU # 1 main memory auxiliary memory data conversion means, 12
... backup means, 13 ... CPU # 2 main storage auxiliary storage data conversion means, 14 ... CPU # 2 main storage auxiliary storage notification means, 15 ... backup data abnormality response means, 16
... abnormality recovery means, 17 ... computer condition creating means, 18 ...
... data trace simulation means, 30 ... computer condition file, 31 ... CPU # 1 main memory auxiliary storage information file, 32 ... CPU # 2 main memory auxiliary storage information file.

Claims (3)

[Claims] 1. A computer system, comprising a plurality of computers connected to each other, for backing up information stored in each computer, comprising: storage condition setting means for setting a storage condition for the information stored in each computer. An abnormality notifying unit that detects an abnormality of each of the computers and receives the information from the computer having the abnormality, and the information received by the abnormality notifying unit based on the storage condition set by the storage condition setting unit. Storage means for converting to a predetermined format and temporarily storing the information, and handling in case of an abnormality in which the information temporarily stored by the storage means is converted into a format recordable by another normal computer and backed up to the normal computer And a computer system. 2. The computer system according to claim 1, wherein a recovery notifying unit for notifying that the abnormal computer has been recovered, and a backup by the abnormal time response unit when notified by the recovery notifying unit A computer system further comprising a restoring unit that restores the stored information to the original computer. 3. The computer system according to claim 1, wherein a recovery notifying unit for notifying that the abnormal computer has been recovered, and a backup for the abnormal time response unit when notified by the recovery notifying unit. And a simulation means for checking a difference between the information stored in the original computer and a simulation result of the simulation means, and a correction means for correcting the information when there is a difference between the simulation results. Computer system to do.