TW201807600A - Data storage method and system thereof including a disc storage module, a magnetic tape storage module, and a processing module - Google Patents

Abstract

A data storage system includes a disc storage module, a magnetic tape storage module comprising a plurality of magnetic tapes, and a processing module. The disc storage module is configured to store a plurality of business data each of which comprises a plurality of files, and magnetic tape numbering data, and store at least one comparison table corresponding to at least one previous period. The processing module calculates a magnetic tape region number corresponding to each file according to the amount of data of each file, the capacity of each magnetic tape and the magnetic tape numbering data, and stores each file in a region of the magnetic tape storage module corresponding to the magnetic tape region number, and further stores a comparison table corresponding to the mapping of the file name of each file and its magnetic tape region number. When the processing module receives a restore request, the processing module restores corresponding files according to the restore reques and the comparison tables.

Description

Data preservation method and system

The invention relates to a data preservation method, in particular to a data preservation method and system for materials that need to be stored for a long time.

Due to the requirements of relevant government regulations, the banking industry keeps important transaction data for a long time. Different from general file backup and preservation methods, it must have a good management and rigorous auditing mechanism in order to respond to internal or external units in the future. The need for long-term preservation of information.

In the existing data storage method, when a plurality of business data corresponding to different business categories are stored, for the convenience of storage, such business data are scattered on different magnetic tapes at different locations in the tape library. In the future, if you want to access such business information, you must control the robotic arm to take different tapes to different locations in the tape library to restore such business data. When the data storage becomes more scattered, the number of tapes retrieved The more it comes, the more time it takes to retrieve the tape. In addition, the retrieval process must first query the tapes stored in the business data you want to retrieve. At this time, you often need to manually type the file name you want to retrieve into the query one by one, which is inconvenient and time-consuming. In addition, the business data stored on the tape needs to be manually copied, and batch recovery cannot be performed automatically, which will increase the processing cost of manual operations and seriously affect the time required for data recovery.

Therefore, the object of the present invention is to provide a data storage method which can be quickly restored.

Therefore, the data storage method of the present invention is implemented by a data storage system. The data storage system includes a plurality of business data related to a current period and corresponding to different business categories, and includes a start tape. Numbered tape numbering data, and stores at least one magnetic disk storage module corresponding to at least one previous comparison table, a magnetic tape storage module including a plurality of magnetic tapes, and an electrical connection between the magnetic disk storage module and the The processing module of the magnetic tape storage module, each business data contains multiple files, each file has its own different file content, each correspondence table corresponding to a previous period contains each file corresponding to the previous period Correspondence between the file name and its tape area number, the method for saving the data includes the following steps:

(A) The processing module calculates a tape area corresponding to each file according to the data amount of each file, the capacity of each tape, and the tape number data stored in the business data of the magnetic disk storage module. Numbering;

(B) the processing module stores each file in the business data in the tape storage module according to the tape area number corresponding to each file in the business data, corresponding to the tape area number Area;

(C) The processing module stores a comparison table corresponding to the current period and containing a correspondence between the file name of each file in the business data and one of its tape area numbers; on the disk storage module;

(D) When the processing module receives a retrieval request including a query period and a query file name, the processing module obtains a comparison containing the same period type as the query period according to the query period Table, and compare a tape area number corresponding to the query file name according to the query file name and the obtained comparison table; and

(E) The processing module returns a file corresponding to the tape area number from the tape storage module to the magnetic disk storage module according to the compared tape area number.

Another object of the present invention is to provide a data storage system that can be quickly restored.

Therefore, the data storage system of the present invention includes a magnetic disk storage module, a magnetic tape storage module including a plurality of magnetic tapes, and a processing module electrically connecting the magnetic disk storage module and the magnetic tape storage module.

The magnetic disk storage module is used for storing a plurality of business data related to a current period and corresponding to different business categories, and tape number data including a starting tape number, and storing at least one corresponding to at least one previous period In the comparison table, each business data contains multiple files, each file has its own different file content, and each corresponding table contains a file name and tape area corresponding to each file in the previous period. Correspondence between numbers.

The tape storage module is used to store each file of the business data related to the current period, and store each of the plurality of business data corresponding to each of the at least one previous period. file.

The processing module is used to calculate a tape area number corresponding to each file according to the data amount of each file, the capacity of each tape, and the tape number data stored in the business data of the magnetic disk storage module. , And according to the tape area number corresponding to each file in the business data stored in the disk storage module, each file in the business data is stored in the tape storage module corresponding to The area of the tape area number is stored in the disk storage module corresponding to the current period, and a comparison table containing the correspondence between the file name of each file in the business data and one of its tape area numbers, When the processing module receives a retrieval request including a query period and a query file name, the processing module obtains a comparison table containing the same period type as the query period according to the query period, and According to the query file name and the obtained comparison table, a tape area number corresponding to the query file name is compared, and the processing module obtains the tape storage module from the tape storage module according to the compared tape area number. Corresponding to the stored files to the tape area number storage module disk.

The effect of the present invention is that the processing data corresponding to different business categories in each period are stored centrally by the processing module, rather than the business data of different business categories are stored separately in multiple locations at different distances from each other. Different tapes can reduce the time it takes for the robot to read the tape. In addition, the processing module automatically obtains the tape area number corresponding to the query file name according to the retrieval request, and automatically retrieves a file corresponding to the tape area number from the tape storage module to the magnetic disk. Storage module can reduce manual work and speed up the return time.

Referring to FIG. 1, an embodiment of a data storage system according to the present invention includes a magnetic disk storage module 11, a magnetic tape storage module 12, a communication module 13 connected to a communication network 100, and an electrical connection to the magnetic disk storage module. 11. The tape storage module 12 and the processing module 14 of the communication module 13.

The magnetic disk storage module 11 is used to store a plurality of business data related to a current period and corresponding to different business categories, such as deposits, loans, foreign exchange, and credit cards, and a starting tape number. Tape number information. Each business data contains multiple files, each file has its own different file content. The magnetic disk storage module 11 also stores at least one comparison table corresponding to at least one previous period, and at least one data table corresponding to the at least one previous period. Each comparison table corresponding to a previous period contains the correspondence between the file name of each file corresponding to the previous period and its tape area number. Each data table corresponding to the previous period contains a correspondence between the file name of each file corresponding to the previous period and the business data to which it belongs, the size of the file, and the file is stored in the tape storage module A backup time for group 12. It is worth mentioning that, ideally, during each fixed time period, such as on the 15th of each month, multiple salesmen who are respectively responsible for multiple different business categories will use their business-end device 2 to generate relevant , For example, the business data of August and transmitted to the processing module 14 to update the business data previously stored in the disk storage module 11 (that is, to overwrite the update with the business data of the current period Related to the previous period, such as the business data in July), in which each salesperson uses its business-end device 2 to store a core system of multiple transaction data related to multiple transactions with the bank Transaction module (not shown), download required transaction information to generate such business information related to the current period.

The tape storage module 12 is used to store each file of the business data related to the current period, and store each of the plurality of business data corresponding to each of the at least one previous period. A file. In this embodiment, the tape storage module 12 is implemented as an automated storage device including a virtual tape library and an automated tape library including multiple tapes. In addition, the business type of these business data for each period is fixed. In terms of the business types of deposits, loans, foreign exchange and credit cards listed previously, each period contains the corresponding deposit type. Business data, business data corresponding to loans, business data corresponding to foreign exchange, and business data corresponding to credit cards. The number of files contained in each piece of business data may not be the same during the same period. For example, the business data corresponding to the deposit type related to the previous period includes, for example, a file related to foreign currency deposits, a A file related to demand deposits and a file related to time deposits. The business data corresponding to the deposit category related to the current period contains a file related to foreign currency deposits, a file related to demand deposits, and a file related to time deposits, as well as a file related to gold Passbook file. Therefore, the number of files contained in the business data corresponding to the deposit type in the current period is 4, which is different from the number of files contained in the business data corresponding to the deposit type in the previous period to 3.

When the processing module 14 receives at least one piece of business data from at least one business-end device 2 through the communication module 13, the processing module 14 stores at least one piece of data previously stored in the disk storage module 11 and corresponds to The previous business data of the at least one business data is updated to the received at least one business data. For each piece of business data currently stored in the disk storage module 11, the processing module 14 also obtains the business data corresponding to the previous period of business data according to a data table corresponding to the previous period. The number of files included (that is, the number of files included in the business data corresponding to the previous period and belonging to the same business category as the business data), and based on the current storage in the disk storage module 11 The number of files included in the business data corresponding to the current period is obtained. The processing module 14 compares whether the number of files corresponding to the business data of the previous period is equal to the number of files corresponding to the business data of the current period. When the processing module 14 compares that the number of files corresponding to other business data in the previous period is not equal to the number of files corresponding to current business data in the current period, the processing module 14 generates an abnormal number of files and outputs the The communication module 13 transmits to a service-end device 2 corresponding to the business data that is generated and transmitted. When the processing module 14 compares the number of files corresponding to the business data of the previous period to less than the business data corresponding to the current period When the number of files is data, the abnormal output of the number of files generated by the processing module 14 will indicate an abnormal increase in the number of files. When the processing module 14 compares the number of files corresponding to other business data in the previous period is greater than When the number of files of the current business data is required, the abnormal output of the number of files generated by the processing module 14 indicates that the number of files is abnormally reduced. When the processing module 14 compares that the number of files corresponding to other business data of the previous period is equal to the number of files corresponding to current business data of the current period, the processing module 14 generates a file number without abnormal indication output.

It is worth mentioning that the bankers may provide different services according to customer needs. For example, the business information of the corresponding deposit type was previously listed. In response to the customer's gold passbook requirements, the bankers have launched gold passbook services, so the current period The business data corresponding to the deposit category also contains the file related to the gold passbook. In addition to increasing service items, banks may also reduce service items. For example, foreign currency deposit services will not be provided in the future. Therefore, the business information corresponding to the next period corresponding to the deposit category will no longer include a foreign currency deposit related service. file. However, when the number of files of business information in the previous period is not equal to the number of files corresponding to the current period of business information, in addition to adjusting service items due to customer needs, it may also be that the salesperson uses his business The terminal device 2 generates one file when generating multiple files of the current period of service data. At this time, the processing module 14 of the data storage system of the present invention automatically compares the number of files of the business data of the previous period with the number of files of the business data of the current period. When the processing module 14 compares When the number of files of the business data in the previous period is not equal to the number of files corresponding to the business data in the current period, the processing module 14 timely generates an abnormal indication of the number of files and sends it to the corresponding business-end device 2, In order to remind the salesman, and then avoid the situation that the number of files is abnormal due to the negligence of the salesman. When the business-end device 2 receives the output of the file number abnormality indication, the business-end device 2 generates a first reply indicating the cause of the abnormality through an input operation of the corresponding salesman and transmits the first reply to the processing module 14. When the processing module 14 receives the first reply from the business-end device 2 via the communication module 13, the processing module 14 stores the first reply corresponding to the current period in the magnetic disk storage module. Group 11.

For each file of each business data, the processing module 14 also obtains a backup time of the file corresponding to the file of the previous period according to the data table corresponding to the previous period (ie, obtains Corresponding to the backup time of the file with the same file name as the previous period), and according to the file currently stored in the disk storage module 11, a file corresponding to the file with the current period is obtained Storage time. The processing module 14 also determines whether the backup time corresponding to the file in the previous period is later than the storage time corresponding to the file in the current period. When the processing module 14 determines that the file should be in the previous period, When the backup time of the file is later than the storage time of the file corresponding to the current period, the processing module 14 generates a file overdue abnormality indication output and transmits to the corresponding generation and transmission of the file via the communication module 13 Of a business-end device 2. When the processing module 14 determines that the backup time corresponding to the file in the previous period is not later than the storage time corresponding to the file in the current period, the processing module 14 generates a file period without exception indication Output. It is worth mentioning that if a salesperson accidentally forgets to generate the business data of the current period, which causes the business data stored in the disk storage module 11 to be the business data of the previous period that has not been updated, borrow The processing module 14 of the data storage system of the present invention determines whether the backup time corresponding to the file in the previous period is later than the storage time corresponding to the file in the current period. When the processing module 14 determines that the corresponding When the backup time of the file in the previous period is later than the storage time corresponding to the file in the current period, the processing module 14 generates the file overdue abnormality indication output in a timely manner and sends it to the corresponding business-end device 2 To remind the salesperson, and thus avoid the situation that the business information is not updated due to the negligence of the salesperson. When the business-end device 2 receives the file overdue abnormality indication output, the business-end device 2 generates a second reply indicating the cause of the abnormality through another input operation of the corresponding salesman and sends it to the processing module 14 . When the processing module 14 receives the second reply from the salesman business-end device 2 via the communication module 13, the processing module 14 stores the second reply corresponding to the current period on the disk Storage module 11. In addition, if you want to determine whether the overdue files are only included in the business data in the current period, but not in the business data in the previous period (that is, the service items corresponding to the files are Only recently), the processing module 14 will not obtain the backup time of the file corresponding to the previous period of the file, so there is no need to determine whether the backup time of the file corresponding to the previous period is late The storage time corresponding to the current period of the file.

The processing module 14 also calculates a tape area corresponding to each file according to the data amount of each file, the capacity of each tape, and the tape number data stored in the business data of the magnetic disk storage module 11. Number, and the number of tapes required for these business materials, in which the tape area numbers corresponding to two adjacent files are continuous and uninterrupted. In this embodiment, the capacity of each tape is the same, so the processing module 14 can calculate each of the tapes based on the capacity of any tape, the data volume of each file in the business data, and the tape number data. The tape area number corresponding to the file and the number of tapes. The processing module 14 also stores the number of tapes in the disk storage module 11, but is not limited thereto. The processing module 14 stores each file in the business data in the tape storage module according to the tape area number corresponding to each file in the business data stored in the magnetic disk storage module 11. An area corresponding to the tape area number in 12 is stored in a corresponding table corresponding to the current period and containing a correspondence relationship between the file name of each file in the business data and one of its tape area numbers. Disk storage module 11. The processing module 14 also stores a corresponding relationship including the file name of each file of the current period and the business data to which it belongs, the size of the file, and the file is stored in one of the tape storage modules 12 Backup the data table of time, and update the starting tape number in the tape number data according to a last tape area number corresponding to the last file in the last piece of data. In this embodiment, the processing module 14 updates the start tape number in the tape number data by adding the last tape area number plus a unit number, such as the sum of 1.

When the processing module 14 receives a retrieval request including a query period and a query file name, the processing module 14 obtains a comparison table containing the same period type as the query period according to the query period. And compares a tape region number corresponding to the query file name according to the query file name and the obtained comparison table, and the processing module 14 retrieves the tape storage module from the tape storage module according to the compared tape region number. 12 returns a file corresponding to the tape area number to the magnetic disk storage module 11. In this embodiment, the retrieval request includes only a query period and a query file name. However, in other embodiments of the present invention, the retrieval request may include multiple query periods and multiple query file names. . It is worth mentioning that when the number of query periods and query file names to be queried is large, the processing module 14 automatically obtains a tape area number corresponding to each query file name to be queried. Reduce the operation time of manually typing the query file names one by one to search for the corresponding tape area number. In addition, business data corresponding to different business categories in each period are continuously and centrally stored in multiple locations adjacent to each other. In different magnetic tapes, due to the centralized storage of these business data, the files corresponding to the query file names that are to be queried may even be stored in the same tape. The time required for the tape of the file can also be reduced. Furthermore, the processing module 14 automatically restores the tapes corresponding to the tapes from the tape storage module 12 according to the multiple tape area numbers obtained. Area numbered files to the disk storage module 11 can greatly reduce manual copying of files corresponding to these query file names from the retrieved tapes Of operating time.

An embodiment of the data storage method of the present invention implemented by using the data storage system will be described below with reference to the accompanying drawings. This embodiment includes a data storage program and a data recovery program in this order.

Referring to FIG. 1, FIG. 2 and FIG. 3, the data storage system implements a data storage program of the data storage method of the present invention. The data storage procedure explains how to store the current business data in the tape storage module 11 and includes the following steps.

In step 301, when the processing module 14 receives the at least one piece of business data via the communication module 13, the processing module 14 stores the at least one piece of previously stored in the disk storage module 11 and corresponds to at least one The previous business data of a business data is updated to the received at least one business data.

In step 302, for each business data currently stored in the magnetic disk storage module 11, the processing module 14 obtains the business data corresponding to the previous period according to the data table corresponding to the previous period. The number of the files included in other business data, and according to the business data currently stored in the disk storage module 11, the number of the files included in the business data corresponding to the current period is obtained.

In step 303, the processing module 14 compares whether the number of files corresponding to the business data of the previous period is equal to the number of files corresponding to the business data of the current period. When the processing module 14 compares that the number of files corresponding to the business data of the previous period is not equal to the number of files corresponding to the business data of the current period, the flow proceeds to step 304; otherwise, the flow proceeds to step 306.

In step 304, the processing module 14 generates an output of the file number abnormality indication and transmits it to the service end device 2 corresponding to the service data generated and transmitted through the communication module 13.

In step 305, when the processing module 14 receives the first reply from the service-side device 2 and indicates the cause of the abnormality via the communication module 13, the processing module 14 stores the first response corresponding to the current period. The first reply is to the magnetic disk storage module 11.

In step 306, for each file of each business data currently stored in the disk storage module 11, the processing module 14 obtains the file corresponding to the file according to the data table corresponding to the previous period. The backup time of the files in the previous period is obtained according to the file currently stored in the disk storage module 11 to obtain the storage time corresponding to the file in the current period.

In step 307, the processing module 14 determines whether the backup time corresponding to the file in the previous period is later than the storage time corresponding to the file in the current period. When it is determined that the backup time corresponding to the file in the previous period is later than the storage time corresponding to the file in the current period, the flow proceeds to step 308; otherwise, the flow proceeds to step 310.

In step 308, the processing module 14 generates the file overdue abnormality indication output and transmits it to the service-side device 2 corresponding to the file generated and transmitted through the communication module 13.

In step 309, when the processing module 14 receives the second reply from the service-side device 2 and indicates the cause of the abnormality via the communication module 13, the processing module 14 stores the response corresponding to the current period. The second reply is to the magnetic disk storage module 11.

In step 310, the processing module 14 calculates the correspondence of each file according to the data amount of each file, the capacity of each tape, and the tape number data stored in the business data of the magnetic disk storage module 11. The tape area number.

In step 311, the processing module 14 stores each file in the business data in the tape storage module 12 according to the tape area number corresponding to each file in the business data. The area of the tape area number.

In step 312, the processing module 14 stores the comparison table corresponding to the current period and containing the correspondence between the file name of each file in the business data and its tape area number in the disk storage module. Group 11 and stores the corresponding relationship between the file name of each file of the current period and the business data to which it belongs, the size of the file, and the backup time of the file stored in the tape storage module 12 Data table, and update the starting tape number in the tape number data according to the last tape area number corresponding to the last file in the last piece of data. In this embodiment, the processing module 14 updates the start tape number in the tape number data by adding the last tape area number plus a unit number, such as the sum of 1.

Referring to FIG. 1 and FIG. 4, the data storage system implements a data recovery program of the data storage method of the present invention. The data retrieval procedure explains how to retrieve the query period and the query file name to be retrieved to the disk storage module 11 and includes the following steps.

In step 313, when the processing module 14 receives a retrieval request including the query period and the query file name, the processing module 14 obtains a period containing the same period as the query period according to the query period. And compare the query file name with the tape area number corresponding to the query file name and the obtained comparison table.

In step 314, the processing module 14 returns a file corresponding to the tape area number from the tape storage module 12 to the disk storage module 11 according to the compared tape area number.

In summary, according to the data storage method and system of the present invention, the processing module 14 centrally stores business data corresponding to different business categories in each period, rather than separately storing business data of different business categories. Tapes that are far away from each other in multiple locations can avoid the need to control the robotic arm to take out different tapes to different locations in the automated tape library when reading such business data in the future, thus consuming a lot of reading time . In addition, the processing module 14 automatically obtains the tape area number corresponding to the query file name according to the retrieval request, and automatically retrieves a file corresponding to the tape area number from the tape storage module 12 to the tape area number. The magnetic disk storage module 11 can reduce manual operations and speed up the recovery time. Furthermore, the processing module 14 compares the number of files of the business data in the previous period with the number of files of the business data in the current period. And determine whether the backup time of the file in the previous period is later than the storage time of the file in the current period to automatically supervise whether the sales data generated by each salesperson using its business-end device 2 is abnormal Conditions, it can indeed achieve the purpose of the invention.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited in this way, any simple equivalent changes and modifications made in accordance with the scope of the patent application and the content of the patent specification of the present invention are still Within the scope of the invention patent.

11‧‧‧Disk storage module
12‧‧‧Tape Storage Module
13‧‧‧Communication Module
14‧‧‧Processing Module
100‧‧‧Communication Network
2‧‧‧Business Device
301 ~ 314‧‧‧step

Other features and effects of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: FIG. 1 is a block diagram of an embodiment of the data storage system of the present invention; FIG. 2 and FIG. 3 illustrate the present invention in cooperation A data storage program in the embodiment of the data storage method; and FIG. 4 is a flowchart illustrating a data recovery program in the embodiment of the data storage method of the present invention.

11‧‧‧Disk storage module

12‧‧‧Tape Storage Module

13‧‧‧Communication Module

14‧‧‧Processing Module

100‧‧‧Communication Network

2‧‧‧Business Device

Claims (10)

A data storage method is implemented by a data storage system. The data storage system includes a plurality of business data related to a current period and corresponding to different business categories, and a tape including a starting tape number. Numbering data, and storing at least one magnetic disk storage module corresponding to at least one previous comparison table, a magnetic tape storage module including a plurality of magnetic tapes, and an electrical connection between the magnetic disk storage module and the magnetic tape storage module Processing module of the group, each business data contains multiple files, each file has its own different file content, each correspondence table corresponding to a previous period contains the file name of each file corresponding to the previous period and Correspondence between tape area numbers, the data storage method includes the following steps: (A) the processing module according to the amount of data of each file and the capacity of each tape in the business data stored in the disk storage module And the tape number data, calculate a tape area number corresponding to each file; (B) the processing module corresponds to each file in the business data The tape area number stores each file in the business data in an area corresponding to the tape area number in the tape storage module; (C) the processing module stores the corresponding current period and contains A comparison table of the correspondence between the file name of each file in the business data and one of its tape area numbers is on the disk storage module; (D) when the processing module receives a file containing a query period and a When inquiring the file name retrieval request, the processing module obtains a comparison table containing the same period type as the query period according to the query period, and compares the query file name and the obtained comparison table according to the query period. A tape area number corresponding to the query file name; and (E) the processing module returns a file corresponding to the tape area number from the tape storage module to the disk according to the compared tape area number Storage module. According to the method for saving data described in claim 1, before step (A), it further comprises a step (F). When the processing module receives at least one piece of business data, the processing module stores at least one piece of data previously stored in the The disk storage module and the previous business data corresponding to the at least one piece of business data are updated to the received at least one piece of business data. According to the data saving method described in claim 1, the magnetic disk storage module further stores at least one data table corresponding to the at least one previous period, and each data table corresponding to the previous period includes a corresponding previous period. The correspondence between the file name of each file and the business data to which it belongs belongs to. Before step (A), it also includes the following steps: (G) For each business data currently stored in the disk storage module, the The processing module obtains the number of files in the business data corresponding to the business data of the previous period according to a data table corresponding to the previous period, and according to the business data currently stored in the disk storage module To obtain the number of files included in the business data corresponding to the current period; and (H) the processing module compares the number of files corresponding to the business data in the previous period with the number of files corresponding to the business data in the current period. Whether they are equal; and (I) when the processing module compares the number of files corresponding to the business data of the previous period not equal to the number of files corresponding to the business data of the current period, the processing module generates an exception Indication output. According to the data saving method described in claim 1, the magnetic disk storage module further stores at least one data table corresponding to the at least one previous period, and each data table corresponding to the previous period includes a corresponding previous period. The file name of each file and its backup time stored in the tape storage module, before step (A), also include the following steps: (J) For each transaction currently stored in the disk storage module For each file of business data, the processing module obtains a backup time of the file corresponding to the file of the previous period according to a data table corresponding to the previous period, and according to the current storage in the disk storage module Group of the files to obtain a storage time corresponding to the current period of the file; (K) the processing module determines whether the backup time of the file corresponding to the previous period is later than that of the file corresponding to the current period The storage time of the file; and (L) when it is determined that the backup time corresponding to the file in the previous period is later than the storage time corresponding to the file in the current period, the processing module generates an abnormal indication Output. According to the data saving method described in claim 1, after step (A), a step (M) is further included, and the processing module updates the last tape area number corresponding to the last file area corresponding to the last file in the last piece of data. The starting tape number in the tape number data. A data storage system including: a magnetic disk storage module for storing multiple pieces of business data related to a current period and corresponding to different business categories, and tape numbering data including a starting tape number, and storing at least A comparison table corresponding to at least one previous period, each business data contains multiple files, each file has its own different file content, each comparison table corresponding to a previous period contains each corresponding to the previous period The correspondence between the file name of a file and its tape area number; a tape storage module containing multiple tapes, and used to store each file in the business data related to the current period, and store the file related to the at least Each file in the plurality of business data corresponding to each of the previous periods; and a processing module, which electrically connects the magnetic disk storage module and the magnetic tape storage module and is used to store the magnetic disk storage module according to The data amount of each file in the business data of the storage module, the capacity of each tape, and the tape number data, and calculate a tape area number corresponding to each file And according to the tape area number corresponding to each file in the business data stored in the disk storage module, each file in the business data is stored in the tape storage module corresponding to the The area of the tape area number is stored in the disk storage module corresponding to the current period and contains a comparison table of the correspondence between the file name of each file in the business data and one of its tape area numbers. When the processing module receives a retrieval request including a query period and a query file name, the processing module obtains a comparison table containing the same period type as the query period according to the query period, and according to The query file name and the obtained comparison table compare a tape region number corresponding to the query file name, and the processing module restores the corresponding tape region number from the tape storage module according to the compared tape region number. The file of the tape area number is sent to the disk storage module. The data storage system according to claim 6, wherein, when the processing module receives at least one piece of business data, the processing module stores at least one piece of business data previously stored in the disk storage module and corresponds to at least one piece of business data The previous business data of is updated to the at least one business data received. The data storage system according to claim 6, wherein the disk storage module further stores at least one data table corresponding to the at least one previous period, and each data table corresponding to the previous period includes a corresponding first There is a correspondence between the file name of each file in the previous period and the business data to which it belongs. For each business data currently stored in the disk storage module, the processing module also corresponds to the corresponding one in the previous period. Data table to obtain the business data corresponding to the number of files included in the business data of the previous period, and to obtain the business data corresponding to the current period based on the business data currently stored in the disk storage module Whether the number of files included in the processing module is equal to the number of files corresponding to the business data of the previous period and the number of files corresponding to the business data of the current period is equal. When the number of files of periodical business data is not equal to the number of files corresponding to the current period of business data, the processing module generates an abnormal instruction output. The data storage system according to claim 6, wherein the disk storage module further stores at least one data table corresponding to the at least one previous period, and each data table corresponding to the previous period includes a corresponding first The file name of each file in the previous period and a backup time stored in the tape storage module. For each file of each business data currently stored in the disk storage module, the processing module also Corresponds to a data table of the previous period, obtains a backup time of the file corresponding to the file of the previous period, and obtains a file corresponding to the current period according to the file currently stored in the disk storage module. A storage time of the file, the processing module also determines whether the backup time corresponding to the file in the previous period is later than the storage time corresponding to the file in the current period, and when the processing module determines that it should When the backup time of the file in the previous period is later than the storage time corresponding to the file in the current period, the processing module generates an abnormal indication output. The data storage system according to claim 6, wherein the processing module further updates a start tape number in the tape number data according to a last tape area number corresponding to a last file in the last piece of data.