JPH03235115A - Unspecific medium selecting system in automatic loading device - Google Patents

Abstract

PURPOSE:To execute the unspecific medium request function in a system containing plural sets of assembly type devices by selecting a suitable device group while referring to a device group management table with respect to an unspecific medium request, selecting a suitable medium in its device group and allocating it to a program. CONSTITUTION:With respect to the unspecific medium request from a program 1, a device group is selected by using a device group selecting means 3, and from the device group name, an unspecific medium group is derived by using a volume group name obtaining means 5. Subsequently, by a medium selecting means 6, an arbitrary medium name in its unspecific medium group is selected, and a medium of its medium name is loaded by an automatic medium loading managing means 7. In such a way, the unspecific medium request function in the system containing plural sets of assembly type devices 10, 11,... can be executed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an unspecified medium selection control method in a system having a plurality of collective automatic loading devices.

[Conventional technology]

In response to an unspecified medium request in a conventional collective automatic loading device, an unspecified medium is extracted from within a specific volume group.

[Problem to be solved by the invention]

The unspecified medium selection method of the conventional collective automatic loading device described above extracts unspecified media from a specific volume group, and therefore cannot operate in a system having a plurality of devices.

[Means to solve the problem]

According to the present invention, "a plurality of input devices, a large number of media, a storage having an address for storing each medium, and a storage for moving media between the storage and the input/output device according to instructions from a higher-level program." a device group management table that includes a plurality of collective devices each having an accessor device, and manages the group name and additional device information of the collective devices as one device group; and all media existing in the collective device. stores the address of each hangar and the name of the device group to which the medium belongs,
a media management file that manages a collection of multiple media as one volume group; a storage address acquisition unit that searches the media management file based on a media name and returns the storage address and device group name of the requested volume; and the requested medium. In the system, the system includes automatic media loading management means that obtains a hangar address and a device group name from the hangar address acquisition means and issues an instruction to the accessor device to load the medium, wherein the medium name is unspecified. When a medium request is made, the device group table is searched according to a predetermined load distribution selection rule, and an optimal device group name is determined;
device group selection means for reflecting the selected result in the device group table again; volume group name acquisition means for determining a volume group name from the determined device group name; and search for the medium management file to select the specified volume. a medium selection means that selects one medium in a group and separates the medium from the volume group; and when a program requests an unspecified medium, the device group selection means obtains a device group name, and the device group name is determining a volume group name using the obtaining means, obtaining one medium name from the medium selection means using the volume group name, allocating the medium to the program, and using the automatic medium loading management group; and an unspecified medium loading control means for loading a medium.''

[Effect]

In the unspecified medium selection method of the present invention, in response to an unspecified medium request from a program, a device group is selected using a device group selection means, and a volume group name acquisition means is used to select an unspecified medium from the device group name. In a system including a plurality of collective devices, the media selection means selects an arbitrary media name in the unspecified media group, and the automatic media loading management means loads the medium with that media name. Enables initial specific media request functionality.

〔Example〕

Next, the present invention will be described in more detail with reference to the drawings showing one embodiment of the present invention.

Referring to FIG. 1, one embodiment of the present invention includes a program 1, unspecified medium loading control means 2, device group selection means 3, device group management table 4, volume group name acquisition means, etc. A medium selection means 6, an automatic medium loading management means 7, a storage address acquisition means 8, a medium management file, and collective devices 10, 11 . It is composed of...

When an unspecified medium request is issued from the program 1, the unspecified medium loading control means 2 requests the device group selection means 3 to
Indicates device group selection. The device group selection means 3 searches the device group management table 4, reads the load information from the device group information, selects the device group with the least load, returns it to the unspecified medium loading management means 2, and at the same time selects the device group with the least load. The load information of the device group in the management table 4 is updated. The unspecified medium loading control means 2 requests the volume group name acquisition means 5 to:
A request is made to convert the device group name obtained from the device group selection means 3 into a volume group name. The volume group name acquisition means 5 converts the given device group name according to a certain conversion rule (for example, appends brihix to the device group name), and returns it to the unspecified medium loading control means 2.

The unspecified medium loading control means 2 requests the medium selection means 6 to select a medium within the volume group obtained from the volume group name acquisition means 5. The medium selection means 6 searches the medium management file 9, selects one medium belonging to the volume group, and separates the medium from the volume group.

The unspecified medium loading control means 2 notifies the automatic medium loading management means 7 of the medium having the medium name thus obtained, and issues a loading instruction.

The automatic medium loading management means 7 notifies the storage address acquisition means 8 of the given medium name. The hangar address acquisition means 8 searches the medium management file 9 based on the notified medium name, acquires the address of the hangar in which the medium is stored and the device group name, and sends the automatic loading management means 7
Return it to.

The automatic medium loading management means 7 includes a hangar address acquisition means 8.
Based on the hangar address and device group name information obtained in , the collective devices 10, 11°, etc. are controlled to automatically load the medium at the hangar address.

〔Effect of the invention〕

As explained above, according to the present invention, in response to an unspecified medium request, an appropriate device group is selected by referring to the device group management table, and an appropriate medium within the device group is selected and programmed. Because of the allocation, unspecified request functions can be realized in a system including a plurality of collective devices.

[Brief explanation of drawings]

FIG. 1 is a block diagram of one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Program, 2...Unspecified medium loading control means, 3...Device group selection means, 4...Device group management table, 5...Volume group name acquisition means, 6...Medium Selection means, 7... automatic medium loading management means, 8... hangar address acquisition means, 9... medium management file, 10, 11. ...Aggregation type device.

Claims (1)

[Claims] A plurality of input devices, a large number of media, a storage having an address for storing each medium, and an accessor that moves media between the storage and the input/output device according to instructions from a host program. a device group management table that includes a plurality of collective devices having a device, and manages the group name and additional device information of the collective device as one device group; It memorizes the address of each hangar and the name of the device group to which the medium belongs,
a media management file that manages a collection of multiple media as one volume group; a storage address acquisition unit that searches the media management file based on a media name and returns the storage address and device group name of the requested volume; and the requested medium. In the system, the system includes automatic media loading management means that obtains a hangar address and a device group name from the hangar address acquisition means and issues an instruction to the accessor device to load the medium, wherein the medium name is unspecified. When a medium request is made, the device group table is searched according to a predetermined load distribution selection rule, and an optimal device group name is determined;
device group selection means for reflecting the selected result in the device group table again; volume group name acquisition means for determining a volume group name from the determined device group name; and search for the medium management file to select the specified volume. a medium selection means that selects one medium in a group and separates the medium from the volume group; and when a program requests an unspecified medium, the device group selection means obtains a device group name, and the device group name is determining a volume group name using the obtaining means, obtaining one medium name from the medium selection means using the volume group name, allocating the medium to the program, and using the automatic medium loading management group; 1. An unspecified medium selection method in a collective automatic loading device, comprising unspecified medium loading control means for loading a medium.