JPH04328649A - Method and device for temporarily storing deleted data - Google Patents

Abstract

PURPOSE:To immediately restore even the data once deleted out of a temporary storage area by storing temporarily the data to be deleted into the temporary storage area and then deleting the data out of a data storage area. CONSTITUTION:When the data stored in a host computer 5 are deleted out of a data storage means, the data to be deleted and stored in various files 4a serving as the data storage areas of a storage 4 are copied into a temporary storage area 4b by a copy means 3d. At the same time, the information on the medium name, the device name, etc., of the copying side are stored in the area 4b as the index information. When the copy is normally complete, a deleting means 5e is started to delete the subject data out of the files 4a.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deleted data temporary storage device and method for temporarily storing deleted data.

0002

2. Description of the Related Art Conventionally, in daily work, when data in a file is deleted, necessary data must be re-registered from a magnetic tape or the like stored in reserve in order to restore the data. Also, if there is no data, it is re-entered from the keyboard or the like.

0003

[Problem to be Solved by the Invention] In the conventional daily work mentioned above, when organizing files on a storage device, the operations are performed by humans, so input errors or misunderstandings may occur, causing unnecessary errors. I even accidentally deleted something and had to do some recovery work. Restoration work involves searching and re-registering necessary information from spare magnetic tapes, etc.
Regardless of the size of the data to be restored, many man-hours were required, such as creating a program for re-registration and loading magnetic tape into the device. Further, if there is no spare, the data must be input again, and when inputting data from a keyboard or the like, a considerable amount of manpower may be required.

SUMMARY OF THE INVENTION An object of the present invention is to provide a temporary storage device and method for deleted data that eliminates such drawbacks and allows data once deleted to be recovered.

[0005]

[Means for Solving the Problems] The present invention is a temporary deletion data storage device that includes a data storage area for storing data, in which data to be deleted is deleted when stored data is deleted from the data storage area. It is characterized in that it has a temporary storage area for temporarily storing data, and deletes the deletion target data from the data storage area after temporarily storing it in the temporary storage area.

[0006] In the present invention described above, it is desirable that the data storage area for storing data is a file.

The present invention provides a deletion data temporary storage method in which a data storage area stores data, and when deleting stored data from the data storage area, the data to be deleted is stored in a temporary storage area different from the data storage area. It is characterized in that the data to be deleted is temporarily stored in a storage area and then deleted from the data storage area.

[0008]

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

FIG. 1 is a block diagram showing an example of a deleted data temporary storage device according to the present invention. The deleted data temporary storage device shown in FIG. 1 includes a terminal 1 for requesting processing, an operating system (hereinafter referred to as OS) 2, a control unit 3 for performing actual work, and a storage device 4 for storing files and the like. and a host computer 5 that controls the entire invention.
It consists of

[0010]Furthermore, the control unit 3 includes a function use requesting means 3.
a, temporary storage area securing means 3b, processing target determining means 3c, copying means 3d, deletion means 3e, and maintenance means 3.
f, end determination means 3g, and temporary storage area release means 3h.
and monitoring means 3i.

The storage device 4 also includes various files 4a and a temporary storage area 4b. The present embodiment has a function of temporarily storing data to be deleted from various files in the storage device 4 in the temporary storage area 4b.

Next, the operation of this embodiment will be explained.

When the terminal 1 is connected to the host computer 5, the OS 2 starts the control section 3. When the control unit 3 is activated, the function use requesting means 31 first notifies the terminal 1 whether to use the temporary storage function, as shown in FIG. 2 (step 21). When a usage request is received from the terminal 1 (step 22), the temporary storage area securing means 3b is activated (step 23). If it is not used, the processing of the control unit 3 ends.

As shown in FIG. 3, the temporary storage area securing means 3b secures a temporary storage area in the storage device 4 (step 31), and transfers control to the OS 2. For example, a magnetic disk device is prepared as a temporary storage area, the size of the temporary storage area that can be used by one terminal is set in advance in the computer system, and the temporary storage area 4b is secured with that size.

Next, when there is a request for processing from the terminal 1, the OS 2 notifies the processing request to the processing determining means 3c. As shown in FIG. 4, the process target determining means 3c determines whether the process is deletion, maintenance, or other (step 41).
. If it is deletion, determine the type of deletion target (step 42)
In other words, it determines whether the object to be deleted is the file itself or the data in the file, and whether the storage organization is sequential organization or index sequential organization. Then, the appropriate copying means 3d is activated (step 43). If maintenance is required, the maintenance means 3f is activated (step 44), and control is transferred to the OS 2 for operations other than deletion and maintenance.

As shown in FIG. 5, the copying means 3d copies the data to be deleted in various files in the storage device 4 to the temporary storage device 42 (step 51). that time,
Information such as the copy source medium name and device name as shown in FIG. 11 is recorded as index information in a temporary storage area (step 52). It is determined whether the copying has been completed normally (step 53), and if it is normal, the deletion means 3e is activated (step 54). If there is an abnormality, an abnormality notification to that effect is sent to the terminal 1 (step 55), and control is transferred to the OS 2. for example,
If the data cannot fit in the temporary storage area 4b,
A message saying "Copying is not possible because the temporary storage area is full" is displayed on terminal 1, prompting the user to take action.

The deletion means 3e, as shown in FIG.
The item to be deleted is deleted (step 61), and control is transferred to the OS2.

In the maintenance means 3f, as shown in FIG. 7, the content of the maintenance from the terminal 1 is determined (step 71), and in the case of restoring something that has been deleted so far, as shown in FIG. A target request notification is performed (step 72), and in the case of deletion of data in the temporary storage area 4b, a deletion target request notification is performed as shown in FIG. 13 (step 76).
In the case of copying from the temporary storage area 4b, as shown in FIG. 14, a copying process is performed (step 75), and a list of names of items in the temporary storage area is displayed on the terminal 1. In this embodiment, as shown in FIGS. 12, 13, and 14, items to be processed are selected by number in the list. In the case of recovery, the device name and medium name of the recovery destination are read from the index information in the temporary storage area 4b (step 73). Then, the object is copied from the temporary storage area 4b (step 74).
). At this time, if the status is specified, all items deleted after the specified restoration target object are copied. In the case of copying, the user inputs the name of the medium, device name, and registration name of the copy destination (step 75), and copies the object (step 74). For deletion, delete after selecting the target (
Step 77). It is determined whether each process has ended normally (step 78), and if it is abnormal, an abnormality notification to that effect is sent to the terminal 1 (step 79), and control is transferred to the OS 2. For example, in the case of copying, when the copy destination has insufficient capacity, etc.
Displays the message "Copying is not possible due to insufficient capacity at the copy destination." and prompts the user to take action.

Further, as shown in FIG. 8, the termination determination means 3g determines the connection between the terminal 1 and the host computer 5 (step 81), and in the case of termination, activates the temporary storage area release means 3h (step 81). 82).

The temporary storage area release means 3h releases the temporary storage area 4b of the storage device 4, as shown in FIG.
Step 91).

As shown in FIG. 10, the monitoring means 3i monitors the operation of the program started from the terminal 1 (step 101), and if there is a process to delete various files, etc. The means 3d is activated (step 102).

As described above, in this embodiment, deleted items are temporarily stored in the temporary storage area from the time the terminal is connected until the terminal is disconnected, and can be restored at any time. In addition, since it monitors what is deleted from the program and stores what is to be deleted, even if a program with deletion processing is run, recovery can be easily performed. When restoring, as shown in FIG. 12, a list of items to be restored can be displayed to allow easy searching. Furthermore, by specifying the state, it is possible to easily restore the specified file to be restored to the state at the time it was deleted. Furthermore, if a copying service is used, the information can be recorded on magnetic tape, floppy disk, etc.

[0023]

As explained above, in the present invention, data to be deleted is temporarily stored in a temporary storage area and then deleted from the data storage area, so that even if the data has been deleted, it can be immediately restored from the temporary storage area. Therefore, when organizing files, there is no need to restore accidentally deleted files from a spare magnetic tape, which saves a lot of man-hours.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing an example of a deleted data temporary storage device according to the present invention.

FIG. 2 is a flowchart showing the processing of a function use requesting means in the embodiment of FIG. 1;

FIG. 3 is a flowchart showing the processing of a temporary storage area securing means in the embodiment of FIG. 1;

FIG. 4 is a flowchart showing the processing of a processing target determining means in the embodiment of FIG. 1;

FIG. 5 is a flowchart showing the processing of the copying means in the embodiment of FIG. 1;

FIG. 6 is a flowchart showing the processing of a deletion unit in the embodiment of FIG. 1;

FIG. 7 is a flowchart showing the processing of the maintenance means in the embodiment of FIG. 1;

FIG. 8 is a flowchart showing the processing of an end determination means in the embodiment of FIG. 1;

FIG. 9 is a flowchart showing the processing of a temporary storage area release means in the embodiment of FIG. 1;

FIG. 10 is a flowchart showing the processing of the monitoring means in the embodiment of FIG. 1;

FIG. 11 is a diagram showing an example of contents of index information.

FIG. 12 is a diagram showing an example of a display at the time of recovery.

FIG. 13 is a diagram showing a display example when deleting.

FIG. 14 is a diagram showing an example of a display when copying.

[Explanation of symbols]

1 Terminal 2 Operating system 3 Control section 3a Function usage request means 3b Temporary storage area securing means 3c Processing target determination means 3d Copying means 3e Deletion method 3f Maintenance measures 3g End judgment means 3h Temporary storage area release means 3i Monitoring means 4. Storage device 4a Various files 4b Temporary storage area 5 Host computer

Claims (3)

[Claims] 1. A deleted data temporary storage device comprising a data storage area for storing data, the temporary storage area for temporarily storing data to be deleted when stored data is deleted from the data storage area. A deleted data temporary storage device, characterized in that the data to be deleted is deleted from the data storage area after being temporarily stored in the temporary storage area. 2. The deleted data temporary storage device according to claim 1, wherein the data storage area for storing the data is a file. 3. A deleted data temporary storage method in which a data storage area stores data, wherein when deleting stored data from the data storage area, data to be deleted is stored in a temporary storage area different from the data storage area. temporarily stored in
A method for temporarily storing deleted data, characterized in that the data to be deleted is then deleted from the data storage area.