JP2002091815A - Media managing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the install and maintenance of a backup file. SOLUTION: In the media managing system for storing the backup file in a prescribed medium and managing the backup file in association with the storing medium, this system is provided with a converted file check means 7 for preparing enciphered file data (e), with which an attached file adding size information and checksum information to a file (b) to prepare the backup file is enciphered and compressed, performing decompressing and deciphering of the prepared enciphered file data (e), deciding whether the decompressed and deciphered enciphered file data (e) are equal to the attached file or not and transmitting the enciphered file data (e) when equality is decided and a file managing means 10 for preparing medium file data (j), with which media designation information designating the medium to store the enciphered file data (e) transmitted by the converted file check means 7 are added to these enciphered file data (e), and storing the prepared media file data (j) on the medium designated by the media designation information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a media management system for backing up an application file of a computer for controlling a plant and a file such as a plant data file to various media and managing the backup.

[0002]

2. Description of the Related Art Conventionally, this type of media management system uses a general-purpose file management system and a file transfer system, and a user individually manages files on a server as needed, with management being conscious of the user. I have registered.

As a backup of a medium such as a tape, a medium itself is used as a backup, or separately, only information on the medium is managed using a general-purpose database.

[0004] When backing up a medium, the medium is backed up periodically from medium to medium in accordance with the reliability of the medium itself, thereby maintaining the security of the media data.

[0005]

However, such a conventional media management system has the following problems.

That is, in the above-described conventional media management system, since data files and the like are stored in the server under the responsibility of the client, the reliability of the stored data files is determined by the maintenance state of the server. Dependent. Further, when a data file or the like stored in the server is required, there is a problem that the client must search the server, check the contents, and then install the client.

[0007] In the backup of a medium such as a tape, since the actual medium and the information to be managed are separate from each other, the medium is searched from the storage location of the medium as needed and installed directly from the medium. There is a problem that must be.

Further, even if the media information that has been backed up is not regularly maintained, the contents may be damaged. In this case, it is necessary to give up using the backup. There is a problem that it does not.

The present invention has been made in view of such circumstances, and a first object of the present invention is to provide a method in which a user only needs to centrally manage media data to be backed up and media management data on a server. Instead, it also stores the file inspection information at the time of backup,
It is an object of the present invention to provide a media management system that allows a user to easily perform installation when necessary and that allows a server administrator to easily maintain a backup file.

A second object of the present invention is to encrypt and decrypt data on the user side, add inspection information to the decrypted data and transfer it to a server, and thereby provide a backup file with high security and high quality. To provide a media management system capable of providing the media management system.

[0011]

Means for Solving the Problems In order to achieve the above object, the present invention takes the following measures.

That is, according to the first aspect of the present invention, there is provided a media management system which stores a backup file of a file on a predetermined medium and manages the backup file in association with the stored medium. Creates encrypted file data that is obtained by encrypting and compressing an additional file with the size information and checksum information added to the file to be decrypted, decompresses the created encrypted file data, and adds the decompressed and decrypted encrypted file data. It is determined whether the file is the same as the file, and if it is determined that the file is the same, the encrypted file data is transmitted to the converted file check unit for transmitting the encrypted file data and the encrypted file data transmitted by the converted file check unit. Media finger specifying the media to be stored Create a media file data obtained by adding the information, the media file data that you created,
File storage means for storing the data in the medium specified by the medium specification information.

Therefore, in the media management system according to the first aspect of the present invention, by taking the above measures, the backup file is recorded on the medium based on the media designation information, and the access to the backup file is performed. This can be easily performed by referring to this media designation information.

According to the second aspect of the present invention, a backup file of a file held by the client is stored in a predetermined medium by using a server connected to the client via a communication network, and the backup file is stored in the stored medium. A media management system that manages files in association with a client, obtains a file for creating a backup file based on media management information that is specified in advance, and obtains size information and checksum information for the obtained file. Creates encrypted file data that is obtained by encrypting and compressing the additional file that has been added, decompresses and decrypts the created encrypted file data, and determines whether the decompressed and decrypted encrypted file data is the same as the additional file. Is determined, the encrypted file File conversion means for transmitting data, and file check transfer means for receiving the encrypted file data transmitted from the conversion file check means and transferring the data to the server side. A server file check that receives encrypted file data, creates client file data in which media specification information relating to a transfer source client and a medium that stores a backup file is added to the encrypted file data, and transmits the created client file data. A transmission unit; and a file storage unit that receives the client file data transmitted from the server file check transmission unit, and stores the received client file data in a medium based on the media designation information. .

Therefore, in the media management system according to the second aspect of the present invention, by taking the above means, the backup file is recorded in the server based on the media designation information, and the access to the backup file is performed. This can be easily performed by referring to this media designation information.

According to a third aspect of the present invention, in the media management system according to the second aspect of the present invention, when the encrypted file data is transmitted from the converted file check means, the file check transfer means adds the encrypted file data to the encrypted file data. Creating inspection encrypted file data to which size information and checksum information are added, transmitting the created inspection encrypted file data to a server file check transmitting unit,
The server file check transmitting unit is configured to convert the encrypted file data included in the inspection encrypted file data into the size information and the check included in the inspection encrypted file data based on the inspection encrypted file data transmitted from the file check transferring unit. If it matches the sum information, it determines that the transmitted check encrypted file data is correct. If it does not match, it requests the file check transfer means to retransmit the check encrypted file data.

Therefore, in the media management system according to the third aspect of the present invention, it is possible to determine whether the transfer of the encrypted file data has been correctly performed by taking the above-described means. As a result, more reliable file transfer can be performed.

According to a fourth aspect of the present invention, in the media management system of the second or third aspect of the present invention, the medium designation information includes at least one of a floppy disk, a hard disk, a magneto-optical disk, a magnetic tape, and a memory. Specify one of them and define at least a block, record, and address as a storage method for the media.

Therefore, in the media management system according to the fourth aspect of the present invention, by taking the above-described means, the media for storing the backup file is
At least a floppy disk, a hard disk, a magneto-optical disk, a magnetic tape, and a memory can be used, and the storage system can be managed. as a result,
Backup files can be more strictly managed.

According to a fifth aspect of the present invention, in the media management system according to any one of the second to fourth aspects, the communication network is the Internet.

Therefore, in the media management system according to the fifth aspect of the present invention, by taking the above measures, the client needs a dedicated terminal by connecting the server and the client via the Internet. Without this, a media management system with excellent system flexibility can be realized.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

An embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a conceptual diagram showing an example of the overall configuration of a media management system according to an embodiment of the present invention.

FIG. 2 is a functional block diagram showing an example of the media management system according to the embodiment of the present invention.

That is, the media management system according to the present embodiment employs a communication network N such as the Internet.
The client 1 and the server 2 are connected via the client 1.

The client 1 includes a backup target media DB (database) 3, a backup target file DB 4, a media management information storage 5,
It comprises a media file conversion means 6, a conversion file check means 7, a file check transfer means 8, and an installation request means 13.

On the other hand, the server 2 includes a server file check transfer unit 9, a file management unit 10, a client management information storage unit 11, and a file data information storage unit 1.
2 is provided.

The backup target medium DB 3 stores a floppy disk, hard disk, magneto-optical disk, magnetic tape, memory, or the like as a medium, and unit media data information a defining a block, record, address, and the like as a storage method. .

The backup target file DB4 stores file data information b such as an application file of a computer for controlling a plant or the like or a plant data file.

The media management information storage unit 5 stores media management information d that specifies which file of the client 1 is to be backed up.

The media file conversion means 6 acquires the unit media data information a stored in the backup target media DB 3, converts it into media file data information c having the same format as the file data information b, Send to

The media file converting means 6 receives the media file data information c transmitted from the converted file checking means 7, creates unit media information a based on the media file data information c, Write to DB3.

The conversion file check means 7 acquires the media management information d from the media management information storage unit 5, and acquires the corresponding file data information b from the backup target file DB 4 based on the media management information d. Then, the size information and the checksum information are added to the file data information b, and the file data information b is encrypted and compressed to create the encrypted file data information e. Of file data information b of the file check transfer means 8
Send to

On the other hand, the conversion file check means 7 receives the media file data information c transmitted from the media file conversion means 6, and stores the media management information d defining which file is to be backed up in the media management information storage section. 5 and create encrypted file data information e for the media management information d.
The file is transmitted to the file check transfer means 8.

Further, when receiving the encrypted file data information e transmitted from the file check transfer means 8, the conversion file check means 7 decompresses and decrypts the encrypted file data information e, The media management information d determines which media the data information e is searched for, and converts the encrypted file data information e into the media file data information c or the file data information b. Then, when the encrypted file data information e is converted into the file data information b, the file data information b is installed in the backup target file DB4, and in the case of the media file data information c, the media file data information c
To the media file conversion means 6.

When the encrypted file data information e is transmitted from the converted file check means 7, the file check transfer means 8 checks the encrypted file data information e by adding size information and checksum information to the encrypted file data information e. Create file data information f. Then, the inspection encrypted file data information f is transferred to the server file check transfer means 9 of the server 2 via the communication network N.

When the file check transfer means 8 receives the retransmission request information g from the server file check transfer means 9 of the server 2, the file check transfer means 8 transmits the check encrypted file data information f again via the communication network N to the server. 2
Is transferred to the server file check transfer means 9.

Further, when the check encrypted file data information f is transmitted from the server file check transfer means 9 of the server 2, the file check transfer means 8 determines the size contained in the check encrypted file data information f. Based on the information and the checksum information, it is determined whether or not the check encrypted file data information f is correct. If not, the retransmission request information g is transmitted to the server 2. If correct, the encrypted file data information e is converted into a converted file. Checking means 7
Send to

The server file check transfer means 9 provided in the server 2 includes the check encrypted file data information f when the check encrypted file data information f is transmitted from the file check transfer means 8 of the client 1. Based on the size information and the checksum information, whether or not the check encrypted file data information f is correct is determined. If the check encrypted file data information f is not correct, the retransmission request information g is transmitted to the file check transfer means 8. It creates client file data information i in which information that recognizes the destination of the client 1 is added to the encrypted file data information f and sends it to the file management means 10.

The server file check transfer means 9
When the client file data information i is transmitted from the file management means 10, creates the check encrypted file data information f in which size information and checksum information are added to the client file data information i, This is transferred to the file check transfer means 8 of the client 1 via the communication network N.

The server file check transfer means 9 of the client 1
When the retransmission request information g is transmitted from the client 1, the inspection encrypted file data information f is transferred to the file check transfer unit 8 of the client 1 via the communication network N again.

When the client file data information i is transmitted from the server file check transfer means 9, the file management means 10 divides the client file data information i into client management information j and file data information k, and The management information j is stored in the client management information storage unit 11, and the file data information k is stored in the file data information storage unit 12.

When the install request information h is transmitted from the install request means 13, the file management means 10 searches the client management information storage section 11 for the client management information j of the requesting client 1, and stores the file data information. The data is combined with the file data information k stored in the section 12 and transmitted to the server file check transfer means 9 as client file data information i.

The client management information storage section 11 stores client management information j.

The file data information storage section 12 stores file data information k.

Installation request means 1 of client 1
When the media data backed up by the client 1 is installed, the media management information d in the media management information storage unit 5 in which backup information is set
And transmits the install request information h to the file management means 10 of the server 2. At this time, if the actual restoration location is changed from the time of backup, the installation requesting unit 13 causes the media management information storage unit 5 to store the media management information d obtained by changing the backup destination information of the media management information d. .

Next, the operation of the media management system according to this embodiment configured as described above will be described.

First, the operation for backing up a file will be described with reference to the flowchart shown in FIG.

In this case, first, the unit media data information a stored in the backup target media DB 3 is obtained by the media file converting means 6 and converted into the media file data information c having the same format as the file data information b. Later, it is transmitted to the conversion file check means 7 (S1).

On the other hand, the conversion file check means 7 reads the media management information d from the media management information storage 5.
Is obtained, and file data information b to be backed up is obtained from the backup target file DB 4 based on the media management information d (S2).

Then, size information and checksum information are added to the file data information b, and the file data information b is encrypted and compressed to create encrypted file data information e. Further, the encrypted file data information e is decompressed and decrypted, and it is determined whether it is the same as the original file data information b. When it is determined that they are the same, the encrypted file data information e is transmitted to the file check transfer unit 8 (S3).

On the other hand, the converted file checking means 7 causes the media file converting means 6 in step S1.
Based on the transmitted media file data information c, the media management information d defining which file is to be backed up is stored in the media management information storage unit 5, and the encrypted file corresponding to the media management information d is stored. The data information e is created and transmitted to the file check transfer means 8 (S4).

In step S3 and step S4, when the encrypted file data information e is transmitted from the conversion file check means 7 to the file check transfer means 8, the file check transfer means 8 Inspection encrypted file data information f to which size information and checksum information are added
Is created. Then, the inspection encrypted file data information f is transferred to the server file check transfer means 9 of the server 2 via the communication network N (S5).

When the check encrypted file data information f is transmitted from the file check transfer means 8 to the server file check transfer means 9 in this way, the server file check transfer means 9 checks the check encrypted file data information f. The check encrypted file data information f based on the size information and the checksum information contained in
Is determined whether or not is correct (S6).

If it is correct (S6: Yes), client file data information i is created by adding information that identifies the destination of the client 1 to the inspection encrypted file data information f, and is transmitted to the file management means 10. (S8). On the other hand, if it is not correct (S6: No)
The retransmission request information g is transmitted to the file check transfer means 8, and the process returns to step S5. Then, the inspection encrypted file data information f is transferred from the file check transfer unit 8 to the server file check transfer unit 9 via the communication network N again.

On the other hand, if the client file data information i is transmitted from the server file check transfer means 9 to the file management means 10 in step S8, the client file data information i Information k. Then, the client management information j is stored in the client management information storage unit 11, and the file data information k is stored in the file data information storage unit 12 (S9).

As described above, the file data information k as the backup file is stored in the file data information storage unit 12, and the client management information j as the management information is stored in the client management information storage unit 11.

Next, the operation when the client 1 installs the backed up file will be described with reference to the flowchart shown in FIG.

First, when the client 1 installs the backed-up media data, the client 1 requests the installation requesting means 13 of the client 1 based on the media management information d of the media management information storage unit 5 in which the backup management information is set. To the file management means 10,
The installation request information h is transmitted (S11). At this time, when the actual restoration location is changed from the backup location, the media management information d in which the backup destination information of the media management information d is changed is stored in the media management information storage unit 5 by the installation requesting unit 13. You.

As described above, the installation request means 1
3 transmits the installation request information h, the file management means 10 retrieves the client management information j of the requesting client 1 from the client management information storage unit 11. Further, the file data information storage unit 12
The client file data information i is created together with the file data information k stored in the server file check information transfer server 9 (S12).

In this way, when the client file data information i is transmitted from the file management means 10 to the server file check transfer means 9, the server file check transfer means 9 transmits the size information to the client file data information i. And checksum information are added to create inspection encrypted file data information f. The inspection encrypted file data information f is transferred to the file check transfer unit 8 via the communication network N (S13).

As described above, when the check encrypted file data information f is transmitted from the server file check transfer means 9 to the file check transfer means 8, the file check transfer means 8 checks the check encrypted file data information f. It is determined based on the size information and the checksum information included in the above that the inspection encrypted file data information f is correct (S14). If it is correct (S14: Yes), the encrypted file data information e
Is transmitted to the conversion file check means 7 (S1
6). On the other hand, if it is not correct (S14: No), the retransmission request information g is transmitted to the server file check transfer means 9 (S15). Server file check transfer means 9
When the retransmission request information g is transmitted from the file check transfer unit 8, the process returns to step S13, where the inspection encrypted file data information f is again transmitted from the file check transfer unit 8 via the communication network N.
Transferred to

In step S16, when the encrypted file data information e is transmitted from the file check transfer means 8 to the converted file check means 7, the encrypted file data information e is decompressed and compounded in the converted file check means 7. , This encrypted file data information e
Is determined from the media management information d, and the encrypted file data information e
Is converted into media file data information c or file data information b (S17).

Then, the file data information b is installed in the backup target file DB 4, and the media file data information c is transmitted to the media file conversion means 6 (S18).

Further, the media file conversion means 6 creates unit media information a based on the media file data information c,
It is stored in B3 (S19).

In this way, desired backup data is extracted from the server 2 and further installed on the client 1.

As described above, in the media management system according to the present embodiment, the files backed up by the user, the media, and the management information data of the files in the media are centrally managed by the above operation. be able to.

By referring to the management information data, the user can easily search for the backup file when necessary, and can easily perform the installation. Also, the server administrator can easily maintain the backup file.

Further, in the media management system according to the present embodiment, data to be sent to the server can be encrypted and decrypted on the user side, and inspection information can be added to the encrypted and decrypted data and transferred to the server.

As a result, it is possible to provide a backup file with high security and high quality.

Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to such configurations. Within the scope of the invented technical concept described in the claims, those skilled in the art will be able to conceive various modified examples and modified examples, and these modified examples and modified examples are also within the technical scope of the present invention. It is understood that it belongs to.

[0073]

As described above, according to the present invention,
Not only can the user centrally manage media data and media management data that the user wants to back up on the server, but it can also store file inspection information at the time of backup.

As a result, a media management system that allows the user to easily perform the installation using the backup file when necessary, and also enables the server administrator to easily maintain the backup file. can do.

Further, according to the present invention, the data can be encrypted and decrypted on the user side, and the encrypted and decrypted data can be transferred to the server after adding inspection information to the decrypted data.

Thus, it is possible to realize a media management system capable of providing a backup file with high security and quality.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing an overall configuration example of a media management system according to an embodiment of the present invention.

FIG. 2 is a functional block diagram showing an example of a media management system according to the embodiment of the present invention;

FIG. 3 is a flowchart showing an operation when backing up a file;

FIG. 4 is a flowchart showing an operation when installing a backed-up file;

[Explanation of symbols]

 N: Communication network a: Unit media data information a: Unit media information b: File data information c: Media file data information d: Media management information e: Encrypted file data information f: Inspection encrypted file data information g: Retransmission request Information i: Client file data information j: Client management information k: File data information h: Installation request information 1: Client 2: Server 3: Backup target media DB 4: Backup target file DB 5: Media management information storage unit 6: Media File conversion means 7 Converted file check means 8 File check transfer means 9 Server file check transfer means 10 File management means 11 Client management information storage unit 12 File data information storage unit 13 Instrument Rule request means

Claims (5)

[Claims] 1. A media management system for storing a backup file of a file on a predetermined medium and managing the backup file in association with a stored medium, wherein a size of the file for creating the backup file is Creates encrypted file data obtained by encrypting and compressing an additional file to which information and checksum information have been added, decompresses and decrypts the created encrypted file data, and the decompressed and decrypted encrypted file data is It is determined whether or not they are the same, and if they are determined to be the same, the conversion file check means for transmitting the encrypted file data; and the encrypted file data transmitted by the conversion file check means, The media that stores the media Media management system to create a media file data obtained by adding and breakfasts specifying information, the media file data the created, characterized by comprising a file storage means for storing the media designated by the media designation information. 2. A backup file of a file held by a client is stored in a predetermined medium by using a server connected to the client via a communication network, and the backup file is associated with the stored medium. A media management system for managing, wherein the client obtains the file based on media management information in which a file for creating the backup file is specified in advance, and obtains size information and checksum information for the obtained file. To create encrypted file data obtained by encrypting and compressing the added file, decompressing and decrypting the created encrypted file data, and determining whether the decompressed and decrypted encrypted file data is the same as the additional file. Judgment, if it is judged the same A conversion file check unit that transmits the encrypted file data; and a file check transfer unit that receives the encrypted file data transmitted from the conversion file check unit and transfers the received file data to the server side. Receiving the encrypted file data transferred from the file check transfer means, and creating client file data in which media specification information regarding the transfer source client and the medium storing the backup file is added to the encrypted file data. A server file check transmission unit for transmitting the created client file data, receiving the client file data transmitted from the server file check transmission unit, and transmitting the received client file data. Media management system characterized by comprising a file storage means for storing the media based on the media designation information. 3. The media management system according to claim 2, wherein the file check transfer unit, when the encrypted file data is transmitted from the conversion file check unit, stores the size of the encrypted file data in the encrypted file data. Creating inspection encrypted file data to which information and checksum information are added, transmitting the created inspection encrypted file data to the server file check transmitting unit, wherein the server file check transmitting unit comprises: When the encrypted file data included in the inspection encrypted file data matches the size information and the checksum information included in the inspection encryption file data, based on the inspection encrypted file data transmitted from Is the transmitted inspection encrypted file data. Media management system data is determined to correct, if not matched, which is characterized in that so as to request retransmission of the test encrypted file data to the file check transfer means. 4. The media management system according to claim 2, wherein the media designation information is at least one of a floppy (registered trademark) disk, a hard disk, a magneto-optical disk, a magnetic tape, and a memory. Wherein at least a block, a record, and an address are defined as a storage method for the medium. 5. The media management system according to claim 2, wherein the communication network is the Internet.