JP2012181796A - Information processing system, duplicate file removal method for information processing system, information processor, and control method and control program for information processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively use resources by removing duplicate data and centrally managing retained data in an information processing system where plural computers are connected with each other.SOLUTION: An information processor includes: a search unit for searching whether a folder including the same data file as a data file to be processed is in data retention means for retaining data; a storage unit for, when the folder including the same data file is not in the data retention means, storing the folder including the data file in the data retention means; a path setting unit for setting a path from a shortcut file in each folder of all information processors having the data file to the data file in the data retention means; and a removal unit for removing all the data files retained in the folders of the information processors.

Description

  The present invention relates to a technique for eliminating duplicate files in an information processing system.

  In the above technical field, in Patent Document 1, duplicate data in a storage unit (HDU) is detected by comparing hash codes, and for duplicate data, processing for discarding one or replacing it with a link, there is no duplication It describes that only data is copied. Patent Document 2 describes a technique that allows a deduplication process to be performed even when a disk drive is turned off by holding a hash value table for a deduplication range of data in a storage system including a plurality of disk drives. ing. In Patent Document 3, when data is stored in a storage array composed of a plurality of disks, duplicate data is stored by the same anchor point in the data set and a delta before and after the virtual tape library (VTL). Identify. It also describes that the stored data is compressed by replacing the duplicate data with a storage indicator.

JP 2009-251725 A JP 2009-080788 A Special table 2009-535704 gazette

  However, the above conventional techniques are techniques for eliminating duplicate data in individual storage media such as disks. Accordingly, it is possible to solve the problem in a self-contained manner by replacing one of the duplicate data in the storage medium and replacing the other with a pointer. However, in a computer system in which many computers and peripheral devices are connected via a network, it is also required to delete duplicate data between storage media, between computers, and between computers and storage media.

  For example, it is possible to eliminate duplicate data if the data of the client PC used by each individual user is freely managed by the user's own intention and the above-described conventional technique is applied. However, if the entire disks included in all servers and all client PCs constituting the computer system are targeted, the possibility that a plurality of duplicate data exists is extremely high. This is because in order to share information among a plurality of client PCs in a computer system, it is necessary to update the shared file on the WEB or the file server, and each client PC downloads the same file. Even if there is no duplicate data in each client PC and there is only one data, if you forget to delete a file that does not need to be used again, it will remain as duplicate data in the system. In addition, it is also caused by the personalization of the payment PC due to the problem of user awareness. In order to solve such a problem, a new device different from the elimination of duplicate data in individual apparatuses is required.

  The objective of this invention is providing the technique which solves the above-mentioned subject.

In order to achieve the above object, an apparatus according to the present invention provides:
Search means for searching whether or not a folder containing the same data file as the data file to be processed exists in the data holding means for holding data;
If there is no folder containing the same data file in the data holding means, storage means for storing the folder containing the data file in the data holding means;
Path setting means for setting a path from a shortcut file in the folder to the data file in the data holding means for all information processing device folders holding the data file;
Deleting means for deleting all the data files held by the folder of the information processing apparatus;
It is characterized by providing.

In order to achieve the above object, the method according to the present invention comprises:
A search step for searching whether a folder containing the same data file as the data file to be processed exists in the data holding means for holding the data;
If there is no folder containing the same data file in the data holding means, a storing step of storing the folder containing the data file in the data holding means;
A path setting step for setting a path from a shortcut file of the folder to the data file in the data holding unit for all folders of the information processing apparatus holding the data file;
A deletion step of deleting all the data files held by the folder of the information processing apparatus;
It is characterized by including.

In order to achieve the above object, a program according to the present invention provides:
A search step for searching whether a folder containing the same data file as the data file to be processed exists in the data holding means for holding the data;
If there is no folder containing the same data file in the data holding means, a storing step of storing the folder containing the data file in the data holding means;
A path setting step for setting a path from a shortcut file of the folder to the data file in the data holding unit for all folders of the information processing apparatus holding the data file;
A deletion step of deleting all the data files held by the folder of the information processing apparatus;
Is executed by a computer.

In order to achieve the above object, a system according to the present invention provides:
An information processing system capable of holding the same data file in different folders generated by a plurality of clients,
Holding means for holding the same data file in one folder;
Path setting means for setting a path from the shortcut files in all the different folders holding the same data file generated by the plurality of clients to the one folder held in the holding means;
Deleting means for deleting all the same data files held by all the different folders;
It is characterized by providing.

In order to achieve the above object, the method according to the present invention comprises:
A duplicate file elimination method in an information processing system capable of holding the same data file in different folders generated by a plurality of clients,
A holding step of holding the same data file in one folder;
A path setting step for setting a path from the shortcut files in all the different folders holding the same data file generated by the plurality of clients to the one folder held in the holding step;
A deletion step of deleting all the same data files held by all the different folders;
It is characterized by including.

  According to the present invention, resources can be effectively used by eliminating duplicate data and centrally managing retained data in an information processing system connected to a plurality of computers.

It is a block diagram which shows the structure of the information processing apparatus which concerns on 1st Embodiment of this invention. It is a block diagram which shows the structure of the information processing system which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the outline of the function structure of each apparatus in the information processing system which concerns on 2nd Embodiment of this invention, and its operation | movement procedure. It is a block diagram which shows the hardware constitutions of the duplication search server which concerns on 2nd Embodiment of this invention. It is a figure which shows the structure of the shortcut data which concerns on 2nd Embodiment of this invention. It is a figure which shows the structure of backup DB and data reference DB which concern on 2nd Embodiment of this invention. It is a flowchart which shows the process sequence of the duplication search server which concerns on 2nd Embodiment of this invention. It is a flowchart which shows the process sequence including the judgment process of backup data presence / absence based on 2nd Embodiment of this invention. It is a flowchart which shows the process sequence including the judgment process of the duplicate data which concerns on 2nd Embodiment of this invention. It is a flowchart which shows the process sequence including the shortcut creation process for client PCs in case with duplicate data which concerns on 2nd Embodiment of this invention. It is a flowchart which shows the process sequence including the backup data storage process to the data reference server in the case of no duplicate data based on 2nd Embodiment of this invention. It is a flowchart which shows the process sequence including the shortcut creation process for client PCs in the case of no duplicate data concerning 2nd Embodiment of this invention. It is a flowchart which shows the process sequence including the judgment process of the backup data presence / absence which has not been processed based on 2nd Embodiment of this invention. It is a flowchart which shows the process sequence including the post-process which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the hardware constitutions of the client PC concerning 2nd Embodiment of this invention. It is a figure which shows the structure of the shortcut table which concerns on 2nd Embodiment of this invention. It is a flowchart which shows the process sequence of client PC which concerns on 2nd Embodiment of this invention. It is a figure which shows each part data in the starting point before starting in the process of the specific example by 2nd Embodiment of this invention. It is a figure which shows each part data in the initialization time (S701) in the process of the specific example by 2nd Embodiment of this invention. It is a figure which shows each part data in the detection time (S707) of the number of backup data in the process of the specific example by 2nd Embodiment of this invention. It is a figure which shows each part data in the duplication data existence judgment (judgment of S809) of the 1st backup data in the process of the specific example by 2nd Embodiment of this invention. It is a figure which shows each part data at the time of the data reference server write preparation in the case of no duplicate data in the process of the specific example by 2nd Embodiment of this invention (S1007). It is a figure which shows each part data at the time of the data reference server writing at the time of the duplication data absence in the process of the specific example by 2nd Embodiment of this invention (S1105), and a shortcut path setting (S1109). It is a figure which shows each part data at the time of the 1st process completion determination in the process of the specific example by 2nd Embodiment of this invention (S1201 / S1203). It is a figure which shows each part data at the time of judgment (S809) of the duplication data of the 2nd backup data in the process of the specific example by 2nd Embodiment of this invention, and the time of a shortcut path setting (S911). It is a figure which shows each part data at the time of the 2nd process completion determination in the process of the specific example by 2nd Embodiment of this invention (S1201 / S1203). It is a figure which shows each part data in the completion time (S1307 / S1309) of the duplication data process in the process of the specific example by 2nd Embodiment of this invention.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. However, the components described in the following embodiments are merely examples, and are not intended to limit the technical scope of the present invention only to them.

[First Embodiment]
An information processing apparatus 100 as a first embodiment of the present invention will be described with reference to FIG. As illustrated in FIG. 1, the information processing apparatus 100 includes a search unit 120, a storage unit 130, a path setting unit 140, and a deletion unit 150. The search unit 120 searches whether or not a folder including the same data file as the data file to be processed exists in the data holding unit 110 that holds data. When there is no folder that includes the same data file B in the data holding unit 110, the storage unit 130 stores the folder YY that includes the data file B in the data holding unit 110.

  The path setting unit 140 applies, for all the information processing apparatuses 160 and 180 holding the data file A, the folders AA and CC in the folder from the shortcut files A and C in the folder to the data file A in the data holding unit 110. A path 190 is set. Further, the path setting unit 140 sets a path 190 from the shortcut file B in the folder to the data file B in the data holding unit 110 for the folder BB of the information processing apparatus 170 that holds the data file B. The deletion unit 150 deletes all data files A held in the folders AA and CC of the information processing apparatuses 160 and 170. Further, the deletion unit 150 deletes the data file B held in the folder BB of the information processing apparatus 170.

  According to the present embodiment, resources can be effectively used by eliminating duplicate data and centralized management of retained data in an information processing system in which a plurality of computers are connected.

[Second Embodiment]
According to the second embodiment of the present invention, by executing the processing introduced in the duplicate search server from the management terminal PC, the data on all the client PCs is automatically stored in the data reference server with the same hash value. It is replaced with a shortcut file to the folder where the data is stored and deleted. If there is no data with the same hash value in the data reference server, the data is newly added to the data reference server, and the path to the data is added to the database.

  The processing procedure of the duplicate search server according to the present embodiment is as follows. First, the data of all the client PCs are integrated and backed up to the duplicate search server, and the hash values of all the data are calculated and written in the database. Next, one hash value of the target data referring to the backup database and one hash value of the target data held in the data reference database that can list the data reference servers in which the unique data until now are integrated and stored Compare one. Then, it is compared whether the target data of the backup database is duplicated data or non-duplicated data. As a result of the comparison, if the target backup data is non-duplicate data, the target backup data is newly duplicated on the data reference server, and new data information is added to the data reference database. When the target backup data is duplicate data, data replication to the data reference server is not performed. In this state, data exists on the data reference server regardless of whether the target backup data is non-duplicate data or duplicate data. Finally, a shortcut to the same data file on the data reference server is created in the folder where the target backup data on the client PC is stored, and the target backup data on the client PC is deleted. Through the processing procedure of this embodiment, it is possible to eliminate duplicate files in the entire information processing system, and the data on all client PCs connected to the system is migrated to the server in a lump so that the entire system can be Effective utilization of the storage medium can be realized.

  In this embodiment, an example in which duplication of backup data files in the information processing system is eliminated will be described as a representative example. However, the present embodiment can be easily applied to eliminate duplication of any data file or part of data. Further, the data may be a program, and the data of the present embodiment is a concept including all digital data processed by the client PC.

<< Configuration of Information Processing System of this Embodiment >>
FIG. 2 is a block diagram illustrating a configuration of the information processing system 200 according to the present embodiment.

  Referring to FIG. 2, the information processing system 200 of the present embodiment includes a client device including client PCs N100 to N10X and a client server N11X. The client PCs N100 to N10X may include desktop computers N100 to N10K, portable terminals N10M, and notebook computers N10N to N10X. The information processing system 200 includes a duplicate search server N200, a data reference server N300, and a management terminal PC / N400. The client PCs N100 to N10X, the duplicate search server N200, the data reference server N300, and the management terminal PC N400 are connected to each other via a network N500. The connection may be wired or wireless.

  The management terminal PC / N400 may be directly connected to the duplicate search server N200 (shown by a broken line in FIG. 2). The data reference server N300 preferably has a parallel structure as shown in FIG. 2 in order to hold only one piece of data that is referred to by the information processing system.

(Outline of functional configuration and operation procedure of each device in information processing system)
FIG. 3 is a block diagram showing an outline of a functional configuration of each device in the information processing system 200 and an operation procedure thereof. Note that FIG. 3 shows the function configuration units, their data and signal connections, and the step numbers of the operation procedures centering on the duplicate search server N200 (the step numbers are the same as the step numbers in FIGS. 7 to 13). Corresponding). Since detailed processing of the operation procedure will be described later with reference to FIGS. 7 to 13, the function and operation of the functional component will be mainly described here.

  The folders built in the client PCs N100 to N10X are backup data source folders F110 to F11X.

  The processing units incorporated in the duplicate search server N200 are a central processing unit SW10, a backup control unit SW20, a comparison calculation unit SW30, and a data creation unit SW40. In the present embodiment, these processing units are realized by the CPU of the duplicate search server N200 executing each processing module program, and signal transmission between the processing units is realized by an argument between the processing module programs. The However, some or all of the processing units may have respective CPUs, and signal transmission between the processing units may be performed by computer communication.

  The database built in the duplicate search server N200 includes a backup DB D10 for managing the backup data source folder of the client PC processed by the duplicate search server N200, and a data reference DB for managing the data reference destination folder of the data reference server. -It is with D20. The registers built in the duplicate search server N200 include a BUID index register R10 and a BUID total register R20 for managing the backup DB / D10, and a FDID index register R30 and FDID total for managing the data reference DB / D20. Register R40. The folders built in the duplicate search server N200 are storage destination folders F210 to F21X for storing backup data transferred from the client PC. The counter built in the duplicate search server N200 is a counter C10 indicating the number of backup data to be processed.

  The folders built in the data reference server N300 are data reference destination folders F310 to F310 that hold backup data of reference destinations.

  The target data processed in this embodiment is backup data F10 to F1X and shortcut files F30 to F3X. The backup data F10 to F1X are held in the data reference folder of the data reference server, and are deleted from the backup source folder and the storage destination folder of the client PC. Therefore, in FIG. 3, the backup data to be deleted is indicated by a broken line. The backup data F10 to F1X in the backup source folder of the client PC are deleted and replaced with shortcut files F30 to F3X.

  The general operation of each functional component will be described in more detail.

  Client PCs N100 to N10X are client PCs and are data exclusion targets of the information processing system. The duplicate search server N200 is a processing server of the information processing system, and is a server that processes data. The data reference server N300 is a storage destination server for all non-redundant data, and is a data reference destination server for shortcut files stored in the client PC. The management terminal PC / N400 is a terminal that activates the information processing system, and is a terminal that activates the central processing unit SW10 of the duplicate search server.

The backup data source folders F110 to F11X of the client PCs N100 to N10X are folders that store backup data on the client PC. Write the path information to this folder in the backup DB. The central processing unit SW10 of the duplicate search server N200 is a processing unit that is activated from the activation command from the management terminal PC / N400, with the main function being the activation to each processing unit. It is a processing department that has the role of a command tower. Also, the process end is transmitted to the management terminal PC N400 at the end of the process. The backup control unit SW20 is a processing unit that is activated by an activation instruction from the central processing unit SW10, and is a processing unit that has a role of backing up all client PCs as a main function. The comparison calculation unit SW30 is a processing unit that is activated by an activation instruction from the central processing unit SW10, and is a processing unit that plays a role of data comparison between the backup DB and the data reference server DB and data comparison of each register value as a main function. is there. The data creation unit SW40 is a processing unit that is activated by an activation command from the central processing unit SW10. The data creation unit SW40 is a processing unit that has a main function of creating and deleting data and folders and a role of creating shortcut files.

  The backup DB D10 is a database of backup data that is a path holding unit that holds the path to the folder of the client PC, which is given an ascending ID for each data by a backup command from the backup control unit SW20. There are five items acquired by the backup DB / D10: a backup ID, a file name associated with the backup ID, a backup storage destination folder path, a hash value, and a backup source client folder path (see FIG. 5B).

  The data reference DB D20 is a path storage unit that stores an ascending ID for each data according to a non-duplicate data creation command from the data creation unit SW40, and accumulates a path to a folder of the data reference server. This is a database for managing data in N300. There are four items to be acquired: a folder ID, a file name associated with the folder ID, a data reference folder path, and a hash value (see FIG. 5B).

  The BUID index register R10 is a register indicating an ID value serving as a primary key of the backup DB. The BUID total register R20 is a register indicating the total value of the number of data in the backup DB. The number of counters generated by the backup control unit SW20 is reflected as it is. The FDID index register R30 is a register that indicates an ID value that is a primary key of the data reference DB. The FDID total register R40 is a register indicating the total value of the number of data in the data reference DB.

  The storage destination folders F210 to F21X are folders that temporarily store backups of all client PCs by the backup control unit SW20. Based on the storage destination folders F210 to F21X, the backup control unit SW20 writes the path information to this folder in the backup DB.

  Data reference destination folders F310 to F31X are storage destinations of data stored on the data reference server N300, and are folders to which the client PC refers to data.

  During the operation of the duplicate search server N200, the data creation unit SW40 creates a new data reference folder in the data reference server N300 when the target backup data is non-duplicate data. The backup data F10 to F1X are data originally stored on the client PC. It is also data to be backed up by the backup control unit SW20. Further, the data is deleted by the data creation unit SW40 and stored in the data reference destination folder.

  The shortcut S10 is a shortcut file that refers to the data reference destination folder in which the target backup data is stored from the backup source folder of the client PC. This shortcut S10 is created and notified by the data creation unit SW40 as a shortcut to the data reference destination folder in which the target backup data is stored.

  The counter C10 is a counter that counts the number of backup DB IDs created by the backup command from the backup control unit SW20. The counter is directly reflected in the BUID total register value by the backup control unit SW20.

<< Hardware Configuration of Duplicate Search Server According to this Embodiment >>
FIG. 4 is a block diagram showing a hardware configuration of the duplicate search server N200 according to the present embodiment.

  In FIG. 4, a CPU 410 is a processor for arithmetic control, and implements each functional component of FIG. 3 by executing a program. The ROM 420 stores fixed data and programs such as initial data and programs. The communication control unit 430 communicates with the client PCs N100 to N10X, the data reference server N300, and the management terminal PC N400 via the network. Communication may be wireless or wired.

  The RAM 440 is a random access memory that the CPU 410 uses as a work area for temporary storage. In the RAM 440, an area for storing data necessary for realizing the present embodiment is secured. Reference numeral 441 denotes a BUID index register. Reference numeral 442 denotes a BUID total register. Reference numeral 443 denotes an FDID index register. Reference numeral 444 denotes an FDID total register. Reference numeral 445 denotes a counter that functions as the counter C10 of the backup DB D10. Reference numeral 446 denotes shortcut data created by the duplicate search server N200 corresponding to each backup data (see FIG. 5A).

  The storage 450 stores a database, various parameters, or the following data or programs necessary for realizing the present embodiment. A storage destination folder 451 temporarily stores backup data. Reference numeral 452 denotes a backup DB (see FIG. 5B). Reference numeral 453 denotes a data reference DB (see FIG. 5B). The storage 450 stores the following programs. Reference numeral 454 denotes a duplicate file search program for executing the entire process, which corresponds to the process of the central processing unit SW10 in FIG. 3 (see FIG. 6). A backup control module 455 controls backup data of the client PC and corresponds to the processing of the backup control unit SW20 in FIG. Reference numeral 456 denotes a comparison formation module that compares register contents and counter values in the branch process of the duplicate file search program 454, and corresponds to the process of the comparison calculation unit SW30 in FIG. Reference numeral 457 denotes a data creation module for storing backup data in the data reference server and creating a shortcut, and corresponds to the processing of the data creation unit SW40 in FIG.

  Note that FIG. 4 shows only data and programs essential to the present embodiment, and general-purpose data and programs such as OS are not shown.

(Composition of shortcut data)
FIG. 5A is a diagram showing a configuration of shortcut data 446 created by the data creation unit SW40 of the duplicate search server N200.

  The shortcut data 446 stores the following data in association with the backup source client folder path 511 to the backup source client folder of the client PC. The data includes a file name 512, a data reference destination folder path 513 of the data reference server N300, and a hash value 514 of backup data in the file.

(Configuration of backup DB and data reference DB)
FIG. 5B is a diagram showing the configuration of the backup DB 452 and the data reference DB 453 of the duplicate search server N200.

  The backup DB 452 stores the following data in association with the backup ID 521. The data includes a file name 522, a backup storage destination folder path 523 to the storage destination folder of the duplicate search server N200, a hash value 524 of backup data in the file, and a backup source client folder path 525.

  The data reference DB 453 stores the next data in association with the folder ID 531 of the data reference destination folder. The data includes a file name 532, a data storage destination folder path 533 to a data reference destination folder of the data reference server N300, and a hash value 524 of backup data in the file.

<< Processing Procedure of Duplicate Search Server According to this Embodiment >>
FIG. 6 is a flowchart showing a processing procedure of the duplicate search server N200 according to the present embodiment. This flowchart is executed by the CPU 410 while using the RAM 440, and the functions of the processing units of the duplicate search server N200 in FIG. 3 are realized. When each processing unit has a CPU, each step includes processing of each processing unit, and information transmission between the processing units is realized by communication between computers. Therefore, the flowchart of FIG. 6 corresponds to the processing procedure of the central processing unit SW10. Note that the circled numbers in FIG. 6 correspond to the circled numbers in FIGS.

  The flowchart in FIG. 6 starts with an activation instruction from the management terminal PC. First, in step S610, the duplicate search server N200 is initialized (see FIG. 7). Next, in step S620, it is determined whether there is new backup data copied from the client PC to the storage destination folder of the duplicate search server N200 (see FIG. 8). If there is no backup data, a report is sent to the management terminal PC / N400 in step S690 and the process is terminated.

  On the other hand, if there is backup data, the process proceeds to step S630, and it is determined whether duplicate data of the backup data exists in the data reference server N300 (see FIG. 9). If it is determined that duplicate data exists in the data reference server N300, the process advances to step S640 to create a shortcut to the backup data of the data reference destination folder of the data reference server N300. Then, a shortcut is set in the backup data source folder of the client PC, and the original backup data is deleted (see FIG. 9). On the other hand, if it is determined that there is no duplicate data in the data reference server N300, the process advances to step S650 to store the backup data temporarily stored in the storage destination folder in the data reference destination folder of the data reference server N300 (see FIG. 10). ). In step S660, a shortcut to the backup data of the data reference destination folder of the data reference server N300 stored in step S650 is created. Then, a shortcut is set in the backup data source folder of the client PC, and the original backup data is deleted (see FIG. 11).

  After replacing the backup data of the client PC with the shortcut in step S640 or S660, it is determined in step S670 whether all the backup data has been processed (see FIG. 12). If backup data that has not yet been processed remains, the process returns to step S630 to repeat the next backup data process. If all the backup data has been processed, the process proceeds to step S680. After post-processing, the management terminal PC is notified of the end of processing in step S690, and the process of the duplicate search server N200 is terminated.

  7 to 13 are flowcharts showing the steps of FIG. 6 in more detail. In the flowcharts of FIGS. 7 to 13, it is described that each processing unit is activated by the central processing unit SW <b> 10. However, as described above, in the configuration shown in FIG. 4, each module is activated with an argument, and when configured with a plurality of CPUs, it is activated by computer communication to each processing unit.

(Judgment processing for backup data)
FIG. 7 is a flowchart showing a processing procedure including determination processing for the presence / absence of backup data. FIG. 7 shows from the startup from the management terminal PC · N400 to the end of the backup process by the backup control unit SW20. The management machine terminal PC · N400 activates the central processing unit SW10 and the processing of FIG. 7 starts.

  First, in step S701, the central processing unit SW10 initializes the values of the BUID index register R10 and the FDID index register R30. That is, BUID index register R10 = 1 and FDID index register R30 = 1. Next, in step S703, the central processing unit SW10 activates the backup control unit SW20.

  In step S705, the backup control unit SW20 starts an integrated backup of all client PC data. Here, the storage destination folders F210 to F21X are designated as the storage destination. Next, in step S707, the backup control unit SW20 reflects the backup data in step S705 on the backup DB · D10 which is a backup database. Note that the value of the counter C10 that counts the number of backups every time data is backed up in step S705 is reflected. Next, in step S709, the backup control unit SW20 reads the counter C10 and determines whether the counter C10 = 0. That is, it is determined whether there is backup data.

  If there is no backup data, the process proceeds to FIG. On the other hand, if there is backup data, the process proceeds to step S711, and the backup control unit SW20 reads the BUID total register R20 and the counter C10 when steps S705 and S707 are completed. Then, the value of the counter C10 is written in the BUID total register R20 to update the register value. That is, BUID total register R20 = counter C10. Next, in step S713, the backup control unit SW20 ends the process, and transmits the backup end to the central processing unit SW10.

(Duplicate data judgment process)
FIG. 8 is a flowchart showing a processing procedure including a duplicate data determination process. FIG. 8 shows the duplication data inspection and the end by the comparison calculation unit SW30.

  First, in step S801, the central processing unit SW10 automatically activates the comparison calculation unit SW30 when it receives the end notification of the backup control unit SW20 in step S713. In step S1209, the comparison calculation unit SW30 is automatically activated again when it receives notification from the comparison calculation unit SW30 that there is still backup data that requires deduplication search.

  Next, in step S803, the comparison calculation unit SW30 reads the FDID exponent register R30 and the FDID total register R40, and compares whether the value of the FDID exponent register R30 is larger than the value of the FDID total register R40 (FDID exponent register R30). > FDID total register R40). That is, it is determined whether the target backup data is all compared with the data in the data reference DB. If FDID index register R30> FDID total register R40, the process proceeds to step S811, and the comparison calculation unit SW30 ends the process and notifies the central processing unit SW10 that the data is “non-overlapping” data as a comparison system difference result. .

  On the other hand, if FDID exponent register R30 ≦ FDID total register R40, the process advances to step S805 to read the BUID exponent register R10 and the FDID exponent register R30. Next, in step S807, hash values using the BUID index register R10 and the FDID index register R30 read in step S805 as the ID values of the respective databases are compared. That is, the backup ID in the backup DB · D10 is the hash value of the BUID index register value = the hash value of the folder ID in the data reference DB · D20 is the FDID index register value. From the result, it is determined whether the target data already exists in the data reference server. If they match in the hash value comparison, the process proceeds to step S813, where the comparison calculation unit SW30 ends the process and notifies the central processing unit SW10 that the data is “duplicate” as a comparison calculation result.

  On the other hand, if they do not match in the hash value comparison, the process advances to step S809, and the comparison calculation unit SW30 writes a value obtained by adding +1 to the value of the FDID exponent register R30 (FDID exponent register R30 = FDID exponent register R30 + 1). Next, returning to step S803, the comparison calculation unit SW30 reads the FDID index register R30 and the FDID total register R40 again and compares whether the value of the FDID index register R30 is larger than the value of the FDID total register R40 ( FDID index register R30> FDID total register R40).

(Shortcut creation process for client PC when duplicate data exists)
FIG. 9 is a flowchart showing a processing procedure including a shortcut creation process for a client PC when there is duplicate data. A processing method when the target data is duplicate data as a result of the duplicate data inspection in FIG. 8 will be described.

  In step S901, the central processing unit SW10 automatically activates the data creation unit SW40 when receiving the transmission that “the target file is duplicate data” from the comparison calculation unit SW30 in step S813. Next, in step S903, the data creation unit SW40 reads the FDID index register R30. In step S905, the data creation unit SW40 reads the data reference DB D20. Next, in step S907, the data creation unit SW40 reads the BUID index register R10. Next, in step S909, the data creation unit SW40 reads the backup DB · D10. Next, in step S911, the data creation unit SW40 refers to the backup source client folder path in the row of the value of the BUID index register R10 read in step S907 in the backup ID column of the backup DB • D10 read in step S909. To do. Then, on the target backup source client path, a shortcut to the data reference destination folder path in the row of the value of the FDID index register R30 read in step S903 in the folder ID column of the data reference DB D20 read in step S905. S10 is newly created.

  In step S913, the data creation unit SW40 includes the file name and the backup source client folder in the row of the BUID index register R10 read in step S907 in the backup ID column of the backup DB • D10 read in step S909. Refer to the path. Then, the file with the same file name on the target backup source client path is deleted. Next, in step S916, the data creation unit SW40 terminates the data creation unit SW40 and transmits the end of data creation to the central processing unit SW10.

(Backup data storage processing to the data reference server when there is no duplicate data)
FIG. 10 is a flowchart showing a processing procedure including a backup data storage process to the data reference server when there is no duplicate data. FIG. 10 shows backup data storage processing to the data reference server in the processing method when the target data is non-duplicate data as a result of the duplicate data check in FIG.

  First, in step S1001, the central processing unit SW10 automatically activates the data creation unit SW40 when it receives the transmission that “the target file is non-duplicate data” from the comparison calculation unit SW30 in step S811. Next, in step S1003, the data creation unit SW40 reads the FDID index register R30. Next, in step S1005, the data creation unit SW40 creates a new backup reference destination folder F31X on the D drive of the data reference server N300. Note that the folder name is set to the value of the FDID index register R30 read in step S1003.

  Next, in step S1007, the data creation unit SW40 writes a value obtained by adding +1 to the value of the FDID total register R40 (FDID total register R40 = FDID total register R40 + 1). Next, in step S1009, the data creation unit SW40 reads the data reference DB D20, and adds a row to the last row of the database so that the value of the FDID index register R30 read in step S1003 becomes the folder ID value. At this time, the folder ID and the column of the data reference destination folder path are written in the last row of the data reference DB D20.

  Next, in step S1011, the data creation unit SW40 reads the BUID index register R10. In step S1013, the data creation unit SW40 reads the backup DB D10. Next, in step S1015, the data creation unit SW40 reads the target backup data F10. That is, the target backup data is read by referring to the backup storage destination folder path in the row in which the backup ID value of the backup DB D10 read in step S1013 is the value of the BUID index register R10 read in step S1011.

(Shortcut creation process for client PC when there is no duplicate data)
FIG. 11 is a flowchart showing a processing procedure including a shortcut creation process for a client PC when there is no duplicate data. FIG. 11 shows a shortcut creation process for the client PC subsequent to FIG. 10 in the processing method when the target data is non-duplicate data as a result of the duplicate data check in FIG.

  First, in step S1101, the data creation unit SW40 reads the data reference DB · D20. In step S1103, the data creation unit SW40 copies the backup data F10 read in step S1015 to the new folder on the data reference server created in step S1005. That is, the backup ID column of the data reference DB D20 read in step S1101 refers to the data reference destination folder path in the row of the FDID index register R30 read in step S1003. Then, the backup data F10 read in step S1015 is copied to the target path destination.

  In step S1105, the data creation unit SW40 reads in step S1013 the file name and hash value of the blank string whose folder ID value of the data reference DB D20 written in step S1009 is the FDID index register R30. The backup ID value read in step S1011 of the backup DB • D10 writes the file name and hash value in the row of the BUID index register R10. That is, at this point, the file name and hash value of the last line of the data reference DB that was blank in step S1009 are written.

  In step S1107, the data creation unit SW40 sets the backup source client folder path column in the row of the value of the BUID index register R10 read in step S1011 as the backup ID column of the backup DB D10 read in step S1013. refer. Further, on the target backup source client path, the folder ID column of the data reference DB D20 read in step S1101 is the column of the data reference destination folder path in the row of the value of the FDID index register R30 read in step S1011. refer. Then, a shortcut S10 to the target data reference destination folder path is newly created. That is, a shortcut file is created for the data reference destination that has been copied to the client path source of the target backup data.

  In step S1109, the data creation unit SW40 sets the backup source client folder path column in the row of the value of the BUID index register R10 read in step S1011 in the backup ID column of the backup DB D10 read in step S1013. Refer to Then, the same target backup data F10 as the target backup data on the target backup source client path is deleted. At this point, the target backup data is deleted in the client PC, and is replaced with a shortcut to the data reference server that is the storage destination of non-duplicate data. Next, in step S1111, the data creation unit SW40 ends the process, and transmits the backup end to the central processing unit SW10.

(Judgment process for the presence of unprocessed backup data)
FIG. 12 is a flowchart showing a processing procedure including determination processing for the presence / absence of unprocessed backup data. FIG. 12 shows a process for determining whether to end or continue by comparing all target data.

  First, in step S1201, the central processing unit SW10 reads the BUID index register R10 and writes a value obtained by adding +1 to the value of the BUID index register R10 (BUID index register R10 = BUID index register R10 + 1). Next, in step S1203, the central processing unit SW10 reads the FDID exponent register R30 and initializes the value of the FDID exponent register R30. That is, FDID index register R30 = 1. Next, in step S1205, the central processing unit SW10 activates the comparison calculation unit SW30.

  Next, in step S1207, the comparison calculation unit SW30 reads the BUID index register R10 and the BUID total register R20 and compares whether the value of the BUID index register R10 is larger than the value of the BUID total register R20 (BUID index register R10). > BUID total register R20). That is, it is a determination whether all the backup data has been processed. In the case of BUID index register R10 ≦ BUID total register R20, the process proceeds to step S1209, the comparison calculation unit SW30 ends the processing, and notifies the central processing unit SW10 that there is backup data that still needs deduplication search. Return to step S801. That is, the process proceeds to the next backup data processing. On the other hand, if BUID index register R10> BUID total register R20, the process proceeds to step S1211, the comparison calculation unit SW30 ends the process, and notifies the central processing unit SW10 that there is no backup data that requires deduplication search. Then, the process proceeds to step S1301.

(Post-processing)
FIG. 13 is a flowchart showing a processing procedure including post-processing. FIG. 13 shows final initialization processing as post-processing.

  First, in step S1301, the central processing unit SW10 automatically activates the backup control unit SW20 when it receives a notification that “the necessary backup data does not exist” from the comparison calculation unit SW30 in step S1211.

  In step S1303, the backup control unit SW20 reads the counter C10 of the backup DB · D10. In step S1305, the backup control unit SW20 deletes all backup data in the backup storage destination folder from the information of the backup DB D10 and the counter C10 read in step S1303. Next, in step S1307, the backup control unit SW20 deletes data in the second and subsequent rows (other than the items) of the backup DB • D10 read in step S1303, and initializes the counter C10 (counter C10 = 0). Next, in step S1309, the backup control unit SW20 initializes the value of the BUID total register R20 when the steps S1305 and S1307 are completed (BUID total register R20 = 1). Next, in step S1311, the backup control unit SW20 transmits the end of initialization to the central processing unit SW10.

  Next, in step S1313, the central processing unit SW10 automatically ends the processing of the duplicate search server N200 when receiving the “end of initialization” transmission from the backup control unit SW20 in step S1311, and the management terminal The PC / N 400 is notified of the end and displayed.

<< Hardware Configuration of Client PC According to this Embodiment >>
FIG. 14 is a block diagram showing a hardware configuration of the client PC according to the present embodiment.

  In FIG. 14, a CPU 1410 is a processor for arithmetic control, and implements each functional component of FIG. 2B by executing a program. The ROM 1420 stores fixed data and programs such as initial data and programs. The communication control unit 1430 communicates with the duplicate search server N200 and the data reference server N300 via the network. Communication may be wireless or wired.

  The RAM 1440 is a random access memory that the CPU 1410 uses as a work area for temporary storage. The RAM 1440 has an area for storing data necessary for realizing the present embodiment. 1441 is processing data processed by the client PC. 1442 is shortcut data set from the duplicate search server N200 (see FIG. 4).

  The storage 1450 stores a database, various parameters, or the following data or programs necessary for realizing the present embodiment. Reference numeral 1451 denotes a shortcut table that holds shortcut data set by the duplicate search server N200 for referring to data of the data reference server N300 (see FIG. 15). Reference numeral 1452 denotes original backup data that is deleted when the setting of the shortcut data is completed. The storage 1450 stores the following programs. Reference numeral 1453 denotes a data processing program for executing the entire processing using the processing data 1441 (see FIG. 16). Reference numeral 1454 denotes a file access module that is included in the data processing program 1453 and refers to the data file of the data reference server N300 using the shortcut data created according to the present embodiment.

  The input interface 1460 is an interface for inputting a user instruction or data from a device. For example, a keyboard 1461 and a pointing device 1462 for inputting a user instruction are connected. On the other hand, the output interface 1470 is an interface for outputting data to the outside, and for example, a display unit 1471 is connected thereto.

  Note that FIG. 14 shows only data and programs essential to the present embodiment, and general-purpose data and programs such as OS are not shown.

(Shortcut table configuration)
FIG. 15 is a diagram showing a configuration of the shortcut table 1451 according to the present embodiment.

  The shortcut table 1451 stores a file name 1502 included in the backup source client folder 1501 in association with the backup source client folder 1501 of the client PC. Then, the following data is stored in association with the file name 1502. The data includes a data reference destination folder path 1503 of the data reference server N300 and a hash value 1504 of backup data in the file.

<< Processing Procedure of Client PC According to this Embodiment >>
FIG. 16 is a flowchart showing a processing procedure of the client PCs N100 to N10X according to the present embodiment. This flowchart is executed by the CPU 1410 while using the RAM 1440, and the functions of the processing units of the client PCs N100 to N10X in FIG. 14 are realized.

  First, in step S1610, it is determined whether or not a search for duplicate data from the duplicate search server N200. If it is a search for duplicate data, the process advances to step S1612 to transmit the data file in the folder to the storage policy folder of the duplicate search server N200.

  In step S1620, it is determined whether or not the shortcut path is set from the duplicate search server N200. If the shortcut path is set, the process advances to step S1622, and the shortcut table 1451 is updated. Next, in step S1624, the data file whose shortcut path is recorded in the shortcut table 1451 is deleted from the folder.

  In step S1630, it is determined whether the access is to a data file in the folder. If the access is to the data file, the process proceeds to step S1632, and the data reference folder of the data reference server N300 is accessed according to the shortcut path recorded in the shortcut table 1451 to acquire the data.

<< Specific Example Processing According to the Present Embodiment >>
Hereinafter, the processing of FIG. 13 to FIG. 13 will be described according to a simple specific example.

(Each part data at the starting point before starting)
FIG. 17 is a diagram showing each part data 1700 at the start point before starting in the processing of the specific example according to the present embodiment.

  The total data list of FIG. 17 includes two new files of client PCs (“a” and “CCCCCCCCCCCCCCCC” “c” with hash values “AAAAAAAAAAAAAAAA”), and “Proposal folder” and “Construction folder” respectively. Indicates that it is included. The register value is data before initialization, and only “4” in the FDID total register R40 indicates that four files are registered in the data reference server DB • D20. Also, nothing is registered in the backup DB D10. In the data reference DB D20, four files (“b”, “c”, “d”, “e”) stored in the data reference server N300 until now are stored in the data reference server N300. Registered with folder path. The counter C10 of the backup DB · D10 is “0”.

(Data for each part at the time of initialization)
FIG. 18 is a diagram showing each part data 1800 at the time of initialization (S701).

  This is the register value when the initialization in step S701 in FIG. BUID index register R10 = 1 and FDID index register R30 = 1.

(Data of each part when the number of backup data is detected)
FIG. 19 is a diagram showing each piece of data 1900 at the time of detecting the number of backup data (S707).

  This is the data at the time of setting the backup DB · D10 in step S707 in FIG. The files “a” and “c” in the total data list of FIG. 17 are duplicated in the backup DB D10. The counter C10 of the backup DB · D10 is set to “2”. This state is determined at the branch of step S708 in FIG. In this specific example, since the counter C10 is “2”, the determination in step S709 is “NO”, and the process proceeds to step S711.

(Each part data in the presence of duplicate data in the first backup data)
FIG. 20 is a diagram showing the data 2000 of each part during the determination of the presence / absence of duplicate data in the first backup data (the determination in S809).

  The upper left of FIG. 20 shows a register value in which “2” of the counter C10 is set in the BUID total register R20 in step S711 of FIG. The remaining five register values in FIG. 20 are register values when determining in the order of file IDs whether the same file is duplicated in the data reference server DB • D20 for the first file “a”. In this specific example, since the same file “a” does not exist in the data reference server DB • D20, the FDID index register R30 is sequentially counted up in step S809 in FIG.

  As shown in the lower left of FIG. 20, the comparison with the fourth file “e” is completed, the FDID index register R30 becomes “5”, and “YES” is determined in the determination of step S803 in FIG. move on. It turns out that the file “a” does not exist in the data reference server DB · D20 and is not stored in the data reference destination folder of the data reference server N300.

(Each data at the time of data reference server writing preparation when there is no duplicate data)
FIG. 21 is a diagram showing each part data 2100 at the time of data reference server writing preparation when there is no duplicate data (S1007, S1009).

  Of the register values in FIG. 21, the FDID total register R40 is counted up in step S1007 in FIG. 10 to add the file “a” not stored in the data reference server N300 to the data reference server DB · D20. . In step S1009, a line for adding the fifth new file in the data reference server DB • D20 is prepared together with the data reference destination folder path.

(Each part data when writing data reference server and setting shortcut path when there is no duplicate data)
FIG. 22 is a diagram showing each part data 2200 at the time of data reference server writing (S1103, S1105) and shortcut path setting (S1109) when there is no duplicate data.

  In step S1103 of FIG. 11, the file “a” is stored in the data reference destination folder of the data reference destination folder path. After that, as shown in the data reference server DB • D20 in FIG. 22, the file “a” and its hash value are inserted in the fifth row in step S1105 in FIG. In step S1107 in FIG. 11, a shortcut is created from the information of the file “a” in the backup DB D10 and the data reference server DB D20. The shortcut path to the file “a” stored in the created data reference destination folder is replaced with the file “a” in the “suggest folder” of the corresponding client PC in step S1109 of FIG.

(Each part data at the time of the first processed judgment)
FIG. 23 is a diagram illustrating data of each part at the time of the first processing completion determination (S1201 / S1203).

  When the processing of the first file “a” is completed, as shown in FIG. 23, the BUID index register R10 is set to “2” in step S1201 of FIG. 12, and it is determined whether the second file “c” is duplicate data. Prepare for. In step S1203, the FDID index register R30 is initialized to “1”, and the file “c” is prepared for comparison from the beginning of the data reference server DB • D20 in which five files are registered. In step S1207 of FIG. 12, BUID index register R10 = BUID total register R20 (NO). Therefore, the process returns to step S801 again to determine whether the file “c” has already been registered in the data reference server DB • D20. start.

(Each part data at the time of judging that there is duplicate data in the second backup data and setting a shortcut path)
FIG. 24 is a diagram illustrating the data of each part when it is determined that duplicate data exists in the second backup data (S809) and when a shortcut path is set (S911).

  By determining whether the file “c” is already registered in the data reference server DB • D20, the file on the first line is “b”, so the FDID index register R30 is set to “2” in step S809 in FIG. The second file already registered in the data reference server DB · D20 is “c” and has the same hash value. Therefore, “YES” is determined in the step S807 in FIG. 8, and the process proceeds to a step S813. In step S911 in FIG. 9, a shortcut for the second file “c” is created.

(Each part data at the time of the second processed determination)
FIG. 25 is a diagram illustrating each part data at the time of the second processing completion determination (S1201 / S1203).

  The processing of the second file “c” is completed, and the BUID index register R10 is set to “3” in step S1201 of FIG. 12, as shown in FIG. Next, in step S1203, the FDID index register R30 is initialized to “1”, and if there is a third file, the data reference server DB • D20 in which five files are registered is prepared for comparison from the beginning. . In the determination in step S1207 in FIG. 12, since BUID index register R10> BUID total register R20 (YES), there is no backup data that has not been processed anymore, and the process proceeds to step S1211 and the process ends.

(Each part data at the end of duplicate data processing)
FIG. 26 is a diagram showing the data of each part at the end of the duplicate data processing (S1307 / S1309).

  Initialized in step S1307 in FIG. 13, the backup DB · D10 becomes empty, and the counter C10 becomes “0”. In step S 1309, the BUID total register R 20 is also initialized to point to the first line of the backup DB · D 10, and the process of the duplicate search server N 200 ends.

  In this specific example, two files “a” and “c” are processed. First, since the file “a” does not exist in the data reference server N300, it is stored in the data reference destination folder of the data reference server N300. Is set in the proposal folder of the client PC. Next, since the file “c” already exists in the data reference server N300, the shortcut path to the already stored file “c” is not stored in the data reference destination folder of the data reference server N300, and the suggested folder of the client PC. Was set to

[Other Embodiments]
As mentioned above, although embodiment of this invention was explained in full detail, the system or apparatus which combined the separate characteristic contained in each embodiment how was included in the category of this invention.

  Further, the present invention may be applied to a system constituted by a plurality of devices, or may be applied to a single device. Furthermore, the present invention can also be applied to a case where a control program that realizes the functions of the embodiments is supplied directly or remotely to a system or apparatus. Therefore, in order to realize the functions of the present invention on a computer, a control program installed in the computer, a medium storing the control program, and a WWW (World Wide Web) server that downloads the control program are also included in the scope of the present invention. include.

[Other expressions of embodiment]
A part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.

(Appendix 1)
Search means for searching whether or not a folder containing the same data file as the data file to be processed exists in the data holding means for holding data;
If there is no folder containing the same data file in the data holding means, storage means for storing the folder containing the data file in the data holding means;
Path setting means for setting a path from a shortcut file in the folder to the data file in the data holding means for all information processing device folders holding the data file;
Deleting means for deleting all the data files held by the folder of the information processing apparatus;
An information processing apparatus comprising:
(Appendix 2)
The search means searches for whether or not the data file held in a folder by all the information processing apparatuses connected to the information processing apparatus as the processing target data file is in the data holding means,
The path setting means, for different folders of different information processing apparatuses including the same data file as the data file to be processed, a path from the shortcut file in the folder to the data file in the data holding means The information processing apparatus according to appendix 1, wherein:
(Appendix 3)
Storage means for reading a data file newly held in a folder by all the information processing devices connected to the information processing device and storing the data file in association with a path to the folder of the connected information processing device. ,
The storage means reads the data file stored in the storage means, and associates the read data file with the newly created path in the data holding means in association with a path to a folder newly created in the data holding means. Remember it in the created folder,
The path setting means holds the data from the shortcut file in the folder of the information processing apparatus from the path to the folder of the connected information processing apparatus and the path to the folder newly created in the data holding means. The information processing apparatus according to appendix 1 or 2, wherein a path to the data file in the means is set, and all data files stored in the storage means are deleted.
(Appendix 4)
The path setting means, when the search means has a folder containing the same data file as the data file to be processed in the data holding means, the path to the folder of the connected information processing apparatus And a path from the shortcut file in the folder of the information processing device to the data file in the data holding unit from the already created path to the folder of the data holding unit, and stored in the storage unit 4. The information processing apparatus according to appendix 3, wherein all the data files that have been deleted are deleted.
(Appendix 5)
The path setting means includes
A path holding unit that holds a path to the folder of the information processing device to be connected until a path from the shortcut file in the folder of the information processing device to the data file in the data holding unit is set;
Path storage means for storing a path to a folder of the data holding means;
The information processing apparatus according to appendix 3 or 4, further comprising:
(Appendix 6)
6. The method according to any one of appendices 1 to 5, wherein whether or not the folder includes the same data file as the data file to be processed is determined based on a comparison of hash values of the data files. Information processing device.
(Appendix 7)
The information processing apparatus according to any one of appendices 1 to 6, wherein the data file is a backup data file, and the folder is a folder that holds the backup data file.
(Appendix 8)
A search step for searching whether a folder containing the same data file as the data file to be processed exists in the data holding means for holding the data;
If there is no folder containing the same data file in the data holding means, a storing step of storing the folder containing the data file in the data holding means;
A path setting step for setting a path from a shortcut file of the folder to the data file in the data holding unit for all folders of the information processing apparatus holding the data file;
A deletion step of deleting all the data files held by the folder of the information processing apparatus;
A method for controlling an information processing apparatus, comprising:
(Appendix 9)
A search step for searching whether a folder containing the same data file as the data file to be processed exists in the data holding means for holding the data;
If there is no folder containing the same data file in the data holding means, a storing step of storing the folder containing the data file in the data holding means;
A path setting step for setting a path from a shortcut file of the folder to the data file in the data holding unit for all folders of the information processing apparatus holding the data file;
A deletion step of deleting all the data files held by the folder of the information processing apparatus;
A control program for causing a computer to execute.
(Appendix 10)
An information processing system capable of holding the same data file in different folders generated by a plurality of clients,
Holding means for holding the same data file in one folder;
Path setting means for setting a path from the shortcut files in all the different folders holding the same data file generated by the plurality of clients to the one folder held in the holding means;
Deleting means for deleting all the same data files held by all the different folders;
An information processing system comprising:
(Appendix 11)
A duplicate file elimination method in an information processing system capable of holding the same data file in different folders generated by a plurality of clients,
A holding step of holding the same data file in one folder;
A path setting step for setting a path from the shortcut files in all the different folders holding the same data file generated by the plurality of clients to the one folder held in the holding step;
A deletion step of deleting all the same data files held by all the different folders;
A duplicate file elimination method comprising:

Claims (10)

Search means for searching whether or not a folder containing the same data file as the data file to be processed exists in the data holding means for holding data;
If there is no folder containing the same data file in the data holding means, storage means for storing the folder containing the data file in the data holding means;
Path setting means for setting a path from a shortcut file in the folder to the data file in the data holding means for all information processing device folders holding the data file;
Deleting means for deleting all the data files held by the folder of the information processing apparatus;
An information processing apparatus comprising: The search means searches for whether or not the data file held in a folder by all the information processing apparatuses connected to the information processing apparatus as the processing target data file is in the data holding means,
The path setting means, for different folders of different information processing apparatuses including the same data file as the data file to be processed, a path from the shortcut file in the folder to the data file in the data holding means The information processing apparatus according to claim 1, wherein: Storage means for reading a data file newly held in a folder by all the information processing devices connected to the information processing device and storing the data file in association with a path to the folder of the connected information processing device. ,
The storage means reads the data file stored in the storage means, and associates the read data file with the newly created path in the data holding means in association with a path to a folder newly created in the data holding means. Remember it in the created folder,
The path setting means holds the data from the shortcut file in the folder of the information processing apparatus from the path to the folder of the connected information processing apparatus and the path to the folder newly created in the data holding means. 3. The information processing apparatus according to claim 1, wherein a path to the data file in the means is set, and all data files stored in the storage means are deleted.   The path setting means, when the search means has a folder containing the same data file as the data file to be processed in the data holding means, the path to the folder of the connected information processing apparatus And a path from the shortcut file in the folder of the information processing device to the data file in the data holding unit from the already created path to the folder of the data holding unit, and stored in the storage unit 4. The information processing apparatus according to claim 3, wherein all the data files that have been deleted are deleted. The path setting means includes
A path holding unit that holds a path to the folder of the information processing device to be connected until a path from the shortcut file in the folder of the information processing device to the data file in the data holding unit is set;
Path storage means for storing a path to a folder of the data holding means;
The information processing apparatus according to claim 3, further comprising:   The information processing apparatus according to claim 1, wherein the data file is a backup data file, and the folder is a folder that holds the backup data file. A search step for searching whether a folder containing the same data file as the data file to be processed exists in the data holding means for holding the data;
If there is no folder containing the same data file in the data holding means, a storing step of storing the folder containing the data file in the data holding means;
A path setting step for setting a path from a shortcut file of the folder to the data file in the data holding unit for all folders of the information processing apparatus holding the data file;
A deletion step of deleting all the data files held by the folder of the information processing apparatus;
A method for controlling an information processing apparatus, comprising: A search step for searching whether a folder containing the same data file as the data file to be processed exists in the data holding means for holding the data;
If there is no folder containing the same data file in the data holding means, a storing step of storing the folder containing the data file in the data holding means;
A path setting step for setting a path from a shortcut file of the folder to the data file in the data holding unit for all folders of the information processing apparatus holding the data file;
A deletion step of deleting all the data files held by the folder of the information processing apparatus;
A control program for causing a computer to execute. An information processing system capable of holding the same data file in different folders generated by a plurality of clients,
Holding means for holding the same data file in one folder;
Path setting means for setting a path from the shortcut files in all the different folders holding the same data file generated by the plurality of clients to the one folder held in the holding means;
Deleting means for deleting all the same data files held by all the different folders;
An information processing system comprising: A duplicate file elimination method in an information processing system capable of holding the same data file in different folders generated by a plurality of clients,
A holding step of holding the same data file in one folder;
A path setting step for setting a path from the shortcut files in all the different folders holding the same data file generated by the plurality of clients to the one folder held in the holding step;
A deletion step of deleting all the same data files held by all the different folders;
A duplicate file elimination method comprising:

Images