JPH04257912A - Magnetic disk file saving system - Google Patents

Abstract

PURPOSE:To manage the lastest date of saving a magnetic disk file and the lastest saved media. CONSTITUTION:A file save information management file 2 is set, and the lastest date of updating and saving the magnetic disk file and the lastest saved media are managed. Then, the magnetic disk file is saved by a save JCL generating means 6 and an automatic JCL activating means 7, and the save information of the magnetic disk file is printed by a file save information printing means 8. Therefore, when the magnetic disk file is destroyed, the file can be speedily recovered.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for saving magnetic disk files in a computer system connected to a large-capacity magnetic disk device.

0002

[Background Art] In the conventional magnetic disk file evacuation method, an operation manager manages the magnetic disk files that need to be evicted, and executes a pre-created evacuation JCL regardless of whether or not the magnetic disk files have been updated. The method was to do so.

0003

[Problems to be Solved by the Invention] The magnetic disk file saving method using software described above also saves magnetic disk files that have not been updated since the latest saving date, so the number of volumes of the saving magnetic tape cannot be saved. However, there was a drawback that it took a long time to evacuate.

The present invention has been made in view of the above-mentioned conventional circumstances, and therefore, an object of the present invention is to provide a magnetic disk file saving method that makes it possible to eliminate the above-mentioned drawbacks inherent in the conventional technology. It's about doing.

[0005]

[Means for Solving the Problems] In order to achieve the above object, a magnetic disk file saving method according to the present invention has the following features:
In a host computer to which a large-capacity magnetic disk device is connected, a means for registering an evacuation medium name of a magnetic disk file on the magnetic disk device in an evacuation information management file, and when the magnetic disk file is updated or evacuated; An evacuation information management file update means for updating the latest update date or the latest evacuation date and the latest evacuation medium; a means for reading file evacuation information from the evacuation information management file; and a means for reading the file evacuation information from the evacuation information management file; Evacuation J that identifies and saves to the latest generation evacuation medium registered in the file evacuation information management file.
The apparatus is configured to include means for generating a CL, means for automatically starting the JCL generated by the evacuation JCL generation means, and evacuation information display means for displaying the latest evacuation date and the latest evacuation medium name of the magnetic disk file. .

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, one embodiment of the present invention includes:
File evacuation information registration means 1, file evacuation information management file 2, file processing program 3, file evacuation information updating means 4, file evacuation information reading means 5, evacuation JC
L generation means 6, JCL automatic starting means 7, magnetic disk file saving information printing means 8, magnetic disk file 9,
CPU 10, large capacity magnetic disk device 11, printing device 1
2. It consists of a magnetic tape device 13.

Next, the operation of the present invention will be explained with reference to the drawings.

First, when creating a new magnetic disk file 9 in a computer system and making it a backup target, the file backup medium is registered in generation units in the file backup information management file 2 by the file backup information registration means 1. do.

Next, when the file processing program 3 is executed and update processing is performed on the magnetic disk file 9, if the file is registered in the file save information management file 2, when the file is closed, the file The save information updating means 4 updates the latest update date of the magnetic disk file registered in the file save information management file 2.

When saving the magnetic disk file 9, the saving JCL generating means 6 is activated. The evacuation JCL generation means 6 uses the file evacuation information reading means 5 to read the file evacuation information from the file evacuation information management file 2, selects the magnetic disk files that have been updated after the latest evacuation date, and stores them on the latest generation evacuation medium. Evacuation JC to evacuate
The JCL automatic starting means 7 generates the saved JCL.
Start. When the evacuation JCL is executed, if the magnetic disk file is registered in the file evacuation information management file 2, the file evacuation information updating means 4 will update the file to the file evacuation information management file 2 when the evacuation process is normally completed. The latest save date of the registered magnetic disk file 9 is updated.

Furthermore, when all the saving processing is completed, the saving information printing means 8 prints the latest update date, the latest saving date, and the latest saving medium of the magnetic disk file on the printing device 12.

[0013]

[Effects of the Invention] As explained above, according to the present invention,
You can efficiently save magnetic disk files on large-capacity magnetic disks, and if a magnetic disk file becomes corrupted, you can know the latest evacuation medium, so you can quickly recover the magnetic disk file. You can get the desired effect.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a magnetic disk file saving method according to the present invention.

Claims (1)

[Claims] 1. In a host computer to which a large-capacity magnetic disk device is connected, a means for registering an evacuation medium name of a magnetic disk file on the magnetic disk device in an evacuation information management file; If the file has been evacuated, a means for updating the evacuation information management file to update the latest update date or the latest evacuation date and the latest evacuation medium, a means for reading file evacuation information from the evacuation information management file, and a means for updating the file evacuation information from the evacuation information management file, a means for generating a save JCL to be saved to a latest generation save medium registered in a file save information management file; and a means for automatically activating the JCL generated by the save JCL generating means;
1. A magnetic disk file saving method for a general-purpose computer, comprising saving information display means for displaying the latest saving date and latest saving medium name of a magnetic disk file.