JPS59168998A - Copying system of stored information - Google Patents

Abstract

PURPOSE:To quicken dumping process and improve operation efficiency of a central processing unit by adding the second virtual memory area to the central processing unit system and dumping information of real memory area when occurrence of impediment, and operating the system using the second virtual memory area in place of the virtual memory. CONSTITUTION:The second direct access memory DASD5 is added, and when an impediment occurs at point A during operation of the CPU1 and operation of the system becomes impossible, information stored in a main memory MSU2 is shunted to a magnetic tape device MT4 and stored in MT4. This transfer is made immediately without needing time. The CPU1 cuts off DASD3 and combined with the second DASD5, and program restoring IPL is executed and operation of the CPU1 is started. When necessary afterward, data at the time of occurrence of impediment is dumped from DASD3 and MT4.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Separation of techniques of the invention The present invention provides a system that, when a failure occurs in the central processing unit that stores both the real and virtual storage areas, the information existing in both storage areas at the time of the failure is recovered. This is intended to improve the method of copying stored information to be copied.

(b) Discrepancies between the conventional technology and the conventional technology When a failure occurs in a central processing unit during continuous use, it is generally used to save a real memory area and a virtual memory area at the time of the failure to take measures against the failure. In order to preserve information in this storage area, the state at the time of failure is analyzed (hereinafter referred to as dump). FIG. 1 is a schematic diagram for explaining a conventional method of copying stored information.
is the central processing unit (cpU), and 2 is the main memory (MS).
U), 3 is a direct access storage device (DASD),
4 is an i-device device (MT) (hereinafter, letters in parentheses will be used for each). The area of DA 8D 3 is divided into pages and stores information therein. Central processing unit 1
To start continuous use, first the initial program on DASD 3 is stored in the MSA. (hereinafter referred to as IPL) CP after storage
The old one is still in operation. If a system failure occurs at point A due to continuous use, etc., MSUs 2 and D at the time of failure occur.
Tamp the information with ASD3 (hereinafter referred to as data) into MT4. When the stamp is completed, the system starts the engineering PL and the 0PUI is used for ha. However, during this process, the CPU t collects the data of DAE]D3 and stores the data t.
f11x, and then storing the data in MT4, which has the drawback of taking time to process.

(C) Purpose of Defense The present invention addresses the above-mentioned drawbacks of the prior art, and aims to provide a method for copying stored information that enables quick dump processing and improves the near-use efficiency of the central processing unit.

(cl) Structure of the Invention To describe it to Hayabusa, the present invention has a central processing unit system with a second
A virtual storage area is attached, and when a failure occurs, the information in the lost storage area is copied, and the system is reversely used by using a second memory area in place of the virtual storage. It is characterized by

The short edge of the processing time of the tamp becomes i'' function.

(e) Missing/Bright Examples Hereinafter, embodiments of the invention will be described in detail with reference to the drawings.

FIG. 2 is a progress diagram of an embodiment showing a four-copy system for storing information according to the invention, and the same reference numerals as in FIG. 1 are used for the same parts as in FIG.

In the figure, 5 indicates the interview access recording equipment (hereinafter referred to as 2, 1) ASrl), and 6 indicates the stock S Q->device (hereinafter referred to as MT), respectively. An example of this is that the second DASJ-5 was introduced.
(When the PUI is being misused, a fault is generated at point A. If the system is not valid or not, the information transferred to MSU2 is evacuated to MT4 and stored in MT4. This transfer is performed at time N. It is done immediately when ν is set.
) is combined with the second DAE ID5 and re-IPL is executed, and the ]! of CPU1 is executed. The application starts. If needed later, data from DASD3 and MT4 at the time of Ichiryu and Bensei can be tamped into MT6.

(f) Effects of the invention As explained and clarified in detail, the tamping process can be performed quickly by using the repellent type of memory information, and the operational efficiency of the central processing device is increased by 1. Next door Nakamori F411 device a
This is the first problem when using the system repeatedly.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram for explaining a conventional plug-type method for storing information, and FIG. 2 is a schematic diagram of an embodiment showing a method for creating recorded information according to the present invention. 1 indicates the notes (Hagi device, 3 and 5 indicate the interview access letter device, and 4 and 6 indicate the Oki Tefu device. Fig. 1 Fig. 2

Claims (1)

[Claims] A method for copying information in both auxiliary storage areas in a central processing unit system consisting of a real storage area and a rest storage area, the method comprising:
A second virtual storage area is attached to the system, and when a failure occurs, the information in the 11'' memory storage area is copied, and the system is operated using the second virtual storage area instead of the virtual storage. A method for copying stored information characterized by the following.