JPS58129566A - Overlaying system - Google Patents

Abstract

PURPOSE:To make a doubling or stand-by system small-sized, and to improve its service, by storing a program which is not strict as to real time processing, or a program data which is not used frequently, in a main storage device of a stand-by side, and shifting it to a main storage device of an act side as necessary. CONSTITUTION:Main storage devices 11a, 11b, central control devices 12a, 12b and inter-system communicating devices 13a, 13b are completely doubled, one is made an act system, the other is made a stand-by system, and the system is operated. To this system, a magnetic tape 15a, cassette magnetic tape 15b, a floppy disk 15c, etc. are connected through an input/output device 14. On the main storage device 13a of this act system, an overlay area 25 as well as various progams is provided, and in the stand-by system, various program data 27 are stored in advance. In this state, when a fault has occurred in the act system, said program data 27 are shifted to the area 25 of the act system, its program data 27 are executed, and the system is made small-sized, and the service is diversified.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Technical field of the invention The present invention relates to an overlay of information processing ffi*Il which is a complete duplex or standby system and is capable of communicating between systems. It is.

<2J Background of the Technology Currently, systems that use the overlay method use external memory such as drums, disks, and bubbles that can be accessed at relatively high speeds in addition to the main memory, and use this to perform the overlay method0 Therefore, when performing a wide variety of services with a small system, in order to compensate for the lack of capacity of the main memory device, the above-mentioned external memory section can be added, or small drums and small disks developed for small systems can be used. However, in small systems, this external memory causes discoloration on the hardware (compared to the main body 1), and the scale of loss is high, which becomes an obstacle to miniaturization and economic efficiency as a system. ing.

(3) Prior art and problems 111 is a block diagram of a conventional overlay system. Control device 3m, magnetic tape @ab, Flotuby disk 3
It is composed of c, etc. Reference numeral 4 denotes an external storage device, which is composed of, for example, an input/output control device 4m, a storage drum 4b, a magnetic disk 4c, a magnetic bubble 4d, etc. Il1
As mentioned above, the external storage device 14 is the ninth device to compensate for the lack of capacity of the main storage device 1 when performing various services in a small system, and in the small system, the external storage device 14 is However, the main body is relatively large-scale and highly equipped, which is an obstacle to making the system smaller and lower in price.

(4) Purpose of the Invention In view of the above-mentioned drawbacks of the conventional technology, the purpose of the present invention is to provide an overlay system that is compact and low-debt by eliminating information processing equipment that is completely redundant or has become a standby system. To do C
:be.

(5) Structure of the Invention According to the present invention, the objective is to overlay an information processing ffi device in a complete duplex or standby system with intersystem communication. There are programs that are not strict on the processing time - there are programs and data that are rarely used, and they are necessary *1.
12. This is achieved by providing an overlay method characterized in that the data is moved to the main storage device on the active side and the processing is executed accordingly.

(6) Examples of the invention llJ & 2 First complete duplexing to detail embodiments of the present invention.

There are two standby and backup information processing methods C and will be explained 011
2dl is one example, 11a in Figure C2.

11b is a main storage device, 12a and 12b are a central control device,
13a and 13b are intersystem communication devices, 14 is a human output control device, and 15 is an input/output device, such as a 15 m magnetic tape,
Cassette magnetic tape 15b1 phrodape disk 15e
It is composed of etc.

112 In FIG.
m.

13 b) jCompletely duplicated, -10,000 is currently in use (Act system)
The other system is used as a standby system (standby system), and if a failure occurs in the system, the standby system becomes the active system and continues the overall service. Scabbard 3!111 is another example, and the difference from the method shown in Figure 2 is channel 1.
6m, 16b! tW, and for this l2, the intersystem overconfidence device 1
In that 7 has a common t:m thread, the action of 6 is 11.
The method is the same as in Figure 2.

By the way, the feature of the present invention is that method 1 in Figure 2A16 or 113: Standby main memory 1: At time: Stores programs that are not strict or program data that is used less frequently. must be kept
I! (:, Accordingly, it is moved to the main memory of the act system and processed ≦: Yes, and the status is shown.

In 11416, (萄 and ib) indicate the contents of the 0" system (act system) and 11 system (standby system) main storage devices, and (cl and ldl are the active system C: 10" system and 0114 (at and (bl), 21J1, 21b, 22m, and 24tb are programs and data for system management and basic services, 23
and 24 are 1c1 grams and data that are required and used relatively often by Mizaki, 25 is an area when it is required; an area that is transferred and used by this Ela area Niprogramme meeting, 26 a
A 26 B stores data that requires continuity of service, and updates standby data more frequently than active data. 027 stores program data that is used less frequently and is not highly relevant. Act 1 overlay area 25 &: This 1c1 gram data is transferred according to the need for writing C2.

Summary 4 (act system 1 in the contents of the main memory in al and (bl); when a failure occurs, the 11' system basic service program 21b, basic service data 22b,
Data 26b is used to perform whatever continuous service is required. Also, the basic service is started by loading the service program m23b and the T-vis data section 24b from the cassette magnetic tape, magnetic tape, HDD, etc. of the auxiliary external memo. And after the failure recovery of the old Act system (i.e. 101 system), the cassette
Start the entire service by loading from a tape, etc.

(7) Effects of the Invention As described above, according to the present invention, due to the nature of the service and reliability, the system is redundant, and the system is fully redundant and has a standby backup system, achieving downsizing and economical efficiency. When attempting to do so, as long as there is an inter-system communication means, it is possible to compensate for the lack of main memory capacity without connecting external memory, and realize a wide variety of services with a small and economical system.

[Brief explanation of the drawing]

Figure 111 is a block diagram of an example of a conventional overlay method. [Figure 2 and II! Figure 3 is a block diagram of an information processing device with a complete redundant standby system, and Figure 114 is a block diagram of an information processing device based on the complete redundant standby system.
FIG. 2 is a diagram showing an example of an overlay method. In the drawings≦;, s 11 a + 11 b is the main memory capacity, 12 a and 12 b are the central control units, and x 3 a and x 3 b. 17 is an intersystem communication device, 14 is an input/output control device, 15 is an input/output device', 23.24 is a service program and data, 25 is an overlay area, and 27 is each program data. Patent applicant Fujitsu Limited Patent agent Akira Aoki Patent attorney Kazuyuki Nishi Patent attorney 1) Male patent attorney Akiyuki Yamaguchi Figure 1 Figure 4

Claims (1)

[Claims] Fully duplex i is a system with standby standby system, and in the overlay system of information processing equipment that can communicate between systems, it is difficult to store occurrences on the standby side, place two, and perform real-time processing.
This overlay method is characterized in that yelgrams or programs and data that are used infrequently are stored, and are moved to the main storage device on the current side according to necessity and executed smoothly.