JP2617598B2 - Write protect method in collective automatic loading device and write protect method in collective automatic loading device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a write protection method and a write protection method in a collective automatic loading apparatus capable of storing a plurality of media in a plurality of cells.

[Conventional technology]

Conventional collective type automatic loading device
When switching between the write-protected state and the write-permitted state for a medium, the medium to be switched, which is stored in the collective type automatic loading apparatus, is once taken out of the collective type automatic loading apparatus, and the medium write protect switch is set. By switching, it is stored and executed again in the collective type automatic loading device.

[Problems to be solved by the invention]

In the above-described conventional collective type automatic loading apparatus write protection system, when switching between a write-protected state and a write-permitted state for a medium, the medium to be switched stored in the collective type automatic loading apparatus is temporarily set. It is taken out of the mold automatic loading device, and the medium is again stored in the collective automatic loading device by switching the write protect switch.Therefore, it is very necessary to switch between the write-protected state and the write-enabled state for the medium. It has the disadvantage that it takes time and effort.

An object of the present invention is to freely switch between a write approximate state and a write permission state while a medium is stored in a collective automatic loading device without removing the medium from the collective automatic loading device. It is an object of the present invention to provide a write protection method in a collective type automatic loading apparatus and a write protection method in a collective type automatic loading apparatus.

[Means for solving the problem]

The write protection method in the collective type automatic loading apparatus according to the first invention includes: (A) a plurality of cells each storing a medium for storing various information, an operation of writing and reading information to and from the medium; At least one input / output device capable of switching between a write-inhibited state and a write-enabled state by an output command, and loading the medium from the cell into the input / output device or from the input / output device to the cell according to an instruction from a host program (B) a media management record for each of the media present in the aggregated automatic loading device, comprising:
A medium management file that stores the address of the cell that stores each of the media. In the write-protection method in the collective type automatic loading apparatus, (C) an input / output command for instructing write inhibition is issued and specified. (D) a write-protection execution unit that issues the input / output command instructing write permission to put the designated input / output device into a writable state; E) A write for turning on and off a write-protection flag provided on a medium management record in the medium management file by designating the medium for which writing is prohibited and the medium for which writing is permitted. Protect registration means, (F) a document on a media management record in the media management file Means for referring to a write prohibition flag for referring to the read prohibition flag; and (G) calling for each mounting process for loading the medium into the input / output device, using the write prohibition flag reference means for the medium to be loaded. Referring to the write-protection flag, when the write-protection flag is on, the input / output device on which the medium is loaded is set to the write-protection state using the write-protection execution means. When the write-protection flag is off, the write-permit execution is performed. And a mount processing write protection control unit for setting the input / output device into which the medium is loaded using a unit, in a writable state.

Further, the write protection method in the collective type automatic loading apparatus according to the second invention is as follows: (A) A plurality of cells each storing a medium for storing various information, and an operation of writing and reading information to and from the medium are performed. And at least one input / output device capable of switching between a write-protected state and a write-enabled state by an input / output command, and loading the medium from the cell into the input / output device or from the input / output device according to an instruction from a host program. A collective automatic loading device having an accessor device for returning to the cell, (B) by having a medium management record for each of the media present in the collective automatic loading device,
A media management file for storing an address of the cell for storing each of the media; a write-protection method in a collective type automatic loading apparatus, comprising: (C) a user wants to prohibit writing; By specifying the medium, a write-protection flag provided on a medium management record in the medium management file is turned on and off, respectively. (D) Each time a mounting process for mounting the medium on the input / output device is performed, (E) If the write-protection flag is on, issue an input / output command to instruct write-protection, referring to the write-protection flag on the medium-management record in the medium-management file. The input / output device for loading a medium is set in a write-protected state, and (F) the write-protected flag is turned off. Sometimes, by issuing the output command for permission of writing, the inputting and outputting apparatus to a writable state of loading the medium is constructed by.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of a write protection system in a collective type automatic loading apparatus according to the present invention.

As shown in FIG. 1, the collective type automatic loading apparatus 1 performs a write operation and a read operation of information to and from a large number of cells which are storage vehicles for storing respective media for storing various information. A plurality of input / output devices capable of switching between a write-protected state and a write-enabled state by an output command, and an accessor device for loading a medium from a cell to an input / output device or returning a medium from an input / output device to a cell according to an instruction from a host program. And

On the other hand, the media management file 2 is
By having a media management record for each of the media present within the, the address of the cell that stores each of the media is stored in the media management record.

The medium management file 2 also has a function of managing a group of a plurality of media as a single volume group.

Then, the cell address obtaining means in the operating system can search the medium management file 2 by giving the medium name and return the cell address of the requested volume as the requested medium.

Also, the medium loading management means obtains the cell address for the requested medium by the cell address obtaining means, issues an instruction to the accessor device of the collective automatic loading apparatus 1, and designates the requested medium. It can be loaded into an input / output device.

Then, the write protection execution means 3 can issue an input / output command for instructing write inhibition to put the designated input / output device into a write-inhibited state.

Further, the write permit execution means 4 can issue an input / output command instructing permission of writing, and make the designated input / output device writable.

On the other hand, the write protection registering means 5 specifies the medium for which writing is to be prohibited and the medium for which writing is to be permitted, thereby setting the write prohibition flags provided on the medium management record in the medium management file 2 respectively. Can be turned on and off.

On the other hand, the write prohibition flag reference means 6 can refer to the write prohibition flag on the medium management record in the medium management file 2.

Therefore, the mount processing write protection control means 7
Is called every time a mount process is performed to load a medium into the input / output device, the write-protect flag is referred to using the write-protect flag reference means 6 for the medium to be loaded. The input / output device loaded using the protect execution means 3 is set in a write-protected state. When the write-protection flag is off, the input / output device loaded using the write permission execution means 4 is set in a write-enabled state.

〔The invention's effect〕

As described above, the write-protection method and the write-protection method in the collective automatic loading device of the present invention do not remove the medium from the collective automatic loading device, and store the medium in the collective automatic loading device. In this state, it is possible to freely switch between the write-protected state and the write-enabled state.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a write protection system in a collective type automatic loading apparatus according to the present invention. 1. Collective automatic loading device 2. Media management file
3 ... write protect executing means, 4 ... write permit executing means, 5 ... write protect registering means, 6 ...
... Write prohibition flag reference means, 7... Mount processing write protection control means.

Claims (2)

(57) [Claims] (A) A plurality of cells each storing a medium for storing various information, an information write operation and a read operation for the medium, and a write-inhibited state and a write-enabled state by an input / output command. A set comprising at least one input / output device capable of switching between the two, and an accessor device for loading the medium from the cell to the input / output device or returning the medium from the input / output device to the cell according to an instruction from a host program. (B) having a medium management record for each of the media present in the collective type automatic loading apparatus,
A medium management file that stores the address of the cell that stores each of the media. In the write-protection method in the collective type automatic loading apparatus, (C) an input / output command for instructing write inhibition is issued and specified. (D) a write-protection execution unit that issues the input / output command instructing write permission to put the designated input / output device into a writable state; E) A write for turning on and off a write-protection flag provided on a medium management record in the medium management file by designating the medium for which writing is prohibited and the medium for which writing is permitted. Protect registration means, (F) a document on a media management record in the media management file Means for referring to a write prohibition flag for referring to the read prohibition flag; and (G) calling for each mounting process for loading the medium into the input / output device, using the write prohibition flag reference means for the medium to be loaded. Referring to the write-protection flag, when the write-protection flag is on, the input / output device on which the medium is loaded is set to the write-protection state using the write-protection execution means. When the write-protection flag is off, the write-permit execution is performed. Write protection control means for setting the input / output device, into which the medium is loaded, using a means, in a writable state. (A) A plurality of cells each storing a medium for storing various types of information, a write operation and a read operation of information to and from the medium, and a write inhibit state and a write enable state by an input / output command. A set comprising at least one input / output device capable of switching between the two, and an accessor device for loading the medium from the cell to the input / output device or returning the medium from the input / output device to the cell according to an instruction from a host program. (B) having a medium management record for each of the media present in the collective type automatic loading apparatus,
A medium management file for storing an address of the cell for storing each of the media; and a write protection method for a collective type automatic loading apparatus, comprising: (C) a user wants to prohibit writing; By specifying the medium, a write-protection flag provided on a medium management record in the medium management file is turned on and off, respectively. (D) Each time a mounting process for mounting the medium on the input / output device is performed, (E) If the write-protection flag is on, issue an input / output command to instruct write-protection, referring to the write-protection flag on the medium-management record in the medium-management file. The input / output device for loading a medium is set in a write-protected state, and (F) the write-protected flag is turned off. Sometimes, by issuing the output command for permission of writing, the inputting and outputting apparatus to a writable state of loading the medium, the write-protect method in collective automatic loading apparatus characterized by.