JP2023106821A - Data management system, data management method, and data management program - Google Patents

Abstract

To provide a data management system, a data management method, and a data management program capable of saving data in a storage device even if a communication abnormality occurs between the storage device and a user terminal while the data stored in the storage device is being edited on the user terminal.SOLUTION: A data management system includes: a determination processing unit that determines the communication state of a first storage device; an evacuation processing unit that saves data being edited in a second storage device with which the user terminal can communicate when the determination processing unit determines that the communication state of the first storage device is abnormal while the user terminal is editing the data stored in the first storage device; and a saving processing unit that saves the data saved in the second storage device in the first storage device when the determination processing unit determines that the communication state is normal after the data being edited is saved in the second storage device.SELECTED DRAWING: Figure 2

Description

The present invention relates to a data management system, a data management method, and a data management program.

2. Description of the Related Art Conventionally, a system is known in which data stored in a storage device is saved in another device to prevent the loss of the data when a disaster or the like occurs (see, for example, Patent Documents 1 and 2).

JP 2008-185371 A JP 2014-2633 A

Here, when a user downloads data (files) stored in a storage device to his/her user terminal (PC) and is performing editing work, a disaster or the like occurs and the user terminal and the storage device become damaged. becomes unable to communicate, the data edited on the user terminal cannot be saved in the storage device. According to the conventional technology, the edited data can be saved in another device, but when the communication between the user terminal and the storage device is restored, the user himself/herself can save the edited data. It must be saved back to storage. Therefore, if the user forgets to save the edited data, the data saved in the storage device will not be updated. Such problems can occur not only in the event of a disaster, but also when the network environment between the user terminal and the storage device deteriorates.

SUMMARY OF THE INVENTION It is an object of the present invention to provide data management capable of saving data stored in a storage device in a storage device even if a communication error occurs between the storage device and the user terminal while the data is being edited on the user terminal. An object of the present invention is to provide a system, a data management method, and a data management program.

A data management system according to one aspect of the present invention includes a first storage device that stores data, and a user terminal that uses the data stored in the first storage device. The data management system comprises: a determination processing unit that determines a communication state of the first storage device; a save processing unit for saving the data being edited in a second storage device with which the user terminal can communicate when the communication state of the device is determined to be abnormal; and a save processing unit that saves the data saved in the second storage device in the first storage device when the determination processing unit determines that the communication state is normal after the data is saved.

A data management method according to another aspect of the present invention includes a determination step in which one or more processors determine a communication state of a first storage device storing data; When the user terminal used determines that the communication state of the first storage device is abnormal in the determination step while the data stored in the first storage device is being edited, the data being edited is transferred to the user terminal. a saving step of saving the data in a second storage device capable of communicating with the second storage device; and a saving step of saving the data saved in the device to the first storage device.

According to another aspect of the present invention, there is provided a data management program comprising: a determination step of determining a communication state of a first storage device storing data; When the communication state of the first storage device is determined to be abnormal in the determination step while the data stored in the first storage device is being edited, the data being edited is transferred to a second storage device with which the user terminal can communicate. a saving step of saving the data in a device; and the data saved in the second storage device when the communication state is determined to be normal in the determining step after the data being edited is saved in the second storage device. and a storing step of storing the in the first storage device.

According to the present invention, even if a communication error occurs between the storage device and the user terminal while the data stored in the storage device is being edited on the user terminal, the data can be saved in the storage device. A system, data management method, and data management program can be provided.

FIG. 1 is a schematic diagram showing a schematic configuration of a data management system according to an embodiment of the present invention. FIG. 2 is a functional block diagram showing the configuration of the data management system according to the embodiment of the invention. FIG. 3 is a diagram schematically showing the flow of processing when the NAS according to the embodiment of the present invention is damaged. FIG. 4 is a diagram schematically showing the flow of processing when the NAS according to the embodiment of the present invention is restored. FIG. 5 is a diagram showing an example of device information used in the data management system according to the embodiment of the present invention. FIG. 6 is a diagram showing an example of communication state information used in the data management system according to the embodiment of the invention. FIG. 7 is a flowchart for explaining an example of the procedure of data management processing executed by the data management system according to the embodiment of the present invention. FIG. 8 is a diagram showing an example of a notification page displayed on the user terminal according to the embodiment of the invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. It should be noted that the following embodiment is an example that embodies the present invention, and does not have the character of limiting the technical scope of the present invention.

[Data management system 10]
FIG. 1 is a diagram showing a schematic configuration of a data management system 10 according to an embodiment of the invention. The data management system 10 includes a management server 1 , a cloud server 2 , a communication device 3 , a NAS (Network Attached Storage) 4 and user terminals 5 . The cloud server 2 is, for example, a data server (second storage device of the present invention) constructed from one or more servers (virtual servers). The NAS 4 is a data server (first storage device of the present invention) connected to a network (LAN). The user terminal 5 is a terminal device such as a personal computer or a smart phone.

The data management system 10 is introduced to customers (also called tenants) such as offices, companies, and facilities. In the example shown in FIG. 1, a data management system 10 introduced to customer A is shown. Also, the communication device 3, the NAS 4, and the user terminal 5A are arranged inside the office, and the user terminal 5B is arranged outside the office (for example, at home). The communication device 3 is a router that performs data communication with the management server 1, the cloud server 2, the user terminal 5B, etc. via the network N1 (for example, the Internet). The NAS 4 and the user terminal 5A in the office are connected to a network N2 (for example, LAN), and perform data communication with the management server 1, the cloud server 2, the user terminal 5B and the like via the communication device 3. Also, the user terminal 5B performs data communication with the management server 1 and the cloud server 2 via the network N1 (for example, the Internet).

Also, the user terminal 5A performs data communication with the NAS 4 via the network N2, and the user terminal 5B performs data communication with the NAS 4 via the network N1. For example, each of the user terminals 5A and 5B downloads and edits data (files) stored in the NAS 4, and uploads (overwrites) the edited data to the NAS 4 in accordance with user operations. can do.

In this way, the NAS 4 and the user terminal 5A are connected by the network N2 (the first communication line of the present invention), the NAS 4 and the user terminal 5B are connected by the network N1 (the second communication line of the present invention), and the cloud server 2 and user terminals 5A and 5B are connected by a network N1.

The management server 1 provides customers with a data management service for managing data of the NAS 4 and the user terminals 5A and 5B. For example, the management server 1 manages data of the NAS 4 and user terminals 5A and 5B for each customer. In the data management service, the data management system 10 temporarily saves the data stored in the NAS 4 in the cloud server 2 when, for example, the NAS 4 is damaged while editing the data stored in the NAS 4 in the user terminal 5B. After recovery, the process of saving the data in NAS 4 is executed.

A specific example will be described with reference to FIGS. 3 and 4. FIG. FIG. 3 shows that the user of user terminal 5A downloads data d1 from NAS 4 and is editing it, and the user of user terminal 5B downloads data d2 from NAS 4 and is editing it. Here, when the NAS 4 acquires disaster information (for example, earthquake early warning) from an external organization (such as the Meteorological Agency), it transmits a disaster notification to the management server 1 . When receiving the disaster notification from the NAS 4, the management server 1 transmits the disaster notification to each of the user terminals 5A and 5B. Upon receiving the disaster notification from the management server 1, the user terminal 5A interrupts access to the NAS 4 and temporarily saves (stores) the data d1 being edited in the cloud server 2. FIG. Similarly, upon receiving the disaster notification from the management server 1, the user terminal 5B interrupts access to the NAS 4 and temporarily saves (stores) the data d2 being edited in the cloud server 2.

After that, when the disaster information is released or the access to the NAS 4 is restored, the NAS 4 transmits a restoration notification to the management server 1 . When the management server 1 receives the restoration notification from the NAS 4 , the management server 1 transmits the restoration notification to the cloud server 2 . When the cloud server 2 receives the restoration notification from the management server 1, it sends the temporarily stored data d1 and d2 to the NAS 4, respectively. When the NAS 4 receives the data d1 and d2 from the cloud server 2, it overwrites and saves them in the storage unit .

A specific configuration of the data management system 10 for realizing such a data management service will be described below.

[NAS4]
As shown in FIG. 2, the NAS 4 includes a control unit 41, a storage unit 42, a communication unit 43, and the like. The NAS 4 is a network-connected storage device accessible from the user terminal 5 .

The communication unit 43 connects the NAS 4 to the network N2 by wire or wirelessly, and communicates with the management server 1, the cloud server 2, and the user terminal 5 via the communication device 3 (see FIG. 1) according to a predetermined communication protocol. A communication interface for executing data communication.

The storage unit 42 is a nonvolatile storage unit such as an HDD (Hard Disk Drive), an SSD (Solid State Drive), or a flash memory that stores various types of information. The storage unit 42 stores a data management program for causing the control unit 41 to execute data management processing (see FIG. 7), which will be described later. For example, the data management program is non-temporarily recorded on a computer-readable recording medium such as a CD or DVD, read by a reading device (not shown) such as a CD drive or DVD drive provided in the NAS 4, and stored in the storage unit 42. stored in Note that the data management program may be distributed from another server and stored in the storage unit 42 .

Various data (files) that can be used by the user terminal 5 are stored in the storage unit 42 . Further, the identification information (user ID, password, etc.) of the user terminal 5 that can access the NAS 4 may be registered in advance in the storage unit 42 . By inputting the identification information, the user of the user terminal 5 can log in to the NAS 4 and use (edit, download, etc.) the saved data.

The control unit 41 has control devices such as a CPU, ROM, and RAM. The CPU is a processor that executes various kinds of arithmetic processing. The ROM stores in advance control programs such as BIOS and OS for causing the CPU to execute various processes. The RAM stores various information and is used as a temporary storage memory (work area) for various processes executed by the CPU. The control unit 41 controls the NAS 4 by causing the CPU to execute various control programs pre-stored in the ROM or storage unit 42 .

Specifically, the control unit 41 includes various processing units such as an update processing unit 411, a disaster information acquisition processing unit 412, a notification processing unit 413, and the like. The control unit 41 functions as the various processing units by executing various processing according to the data management program. Also, part or all of the processing units included in the control unit 41 may be configured by electronic circuits. The data management program may be a program for causing a plurality of processors to function as the various processing units.

The update processing unit 411 saves data transmitted from the user terminal 5 in the storage unit 42 . For example, when a user who has access rights to the NAS 4 downloads and edits predetermined data stored in the NAS 4 in the user terminal 5 and then uploads it to the NAS 4, the update processing unit 411 receives the data from the user terminal 5. Then, the data is overwritten (updated) in the storage unit 42 . A user of each user terminal 5 network-connected to the NAS 4 can access the NAS 4 to view and edit desired data.

The disaster information acquisition processing unit 412 acquires disaster information (disaster prevention information). For example, the disaster information acquisition processing unit 412 acquires disaster information from an external organization (the Meteorological Agency, a local government, etc.) that has jurisdiction over the area where the NAS 4 is installed. The disaster information includes earthquake information, fire information, landslide information, volcano information, tsunami information, weather information, and the like. The disaster information acquisition processing unit 412 may periodically access the server of the external organization to acquire the disaster information, or may acquire the disaster information transmitted from the server of the external organization when a disaster occurs. good too. The disaster information acquisition processing unit 412 may determine the communication state between the NAS 4 and the user terminal 5 based on the disaster information (disaster prevention information). In this case, the disaster information acquisition processing unit 412 is an example of the determination processing unit of the present invention.

When the disaster information acquisition processing unit 412 acquires the disaster information, the notification processing unit 413 transmits information indicating that the NAS 4 has been damaged (disaster notification) to the management server 1 . Specifically, the notification processing unit 413 transmits the disaster notification to the management server 1 when it determines that the disaster level in the disaster information is a level at which access to the NAS 4 is disabled (communication disabled). . For example, when the disaster information is an earthquake early warning, the notification processing unit 413 transmits the disaster notification to the management server 1 when the maximum seismic intensity is 5 or more. If the maximum seismic intensity is less than 4, access to the NAS 4 is unlikely to be disabled, so the notification processing unit 413 does not send the disaster notification to the management server 1 .

The disaster notification includes identification information (NAS_ID) of the NAS 4 that has suffered a disaster. Also, the disaster notification may include NAS_ID and identification information (user terminal ID) of the user terminal 5 currently editing data.

Further, the notification processing unit 413 transmits information (restoration notification) indicating that the NAS 4 has been restored to the management server 1 when the communication state of the NAS 4 is restored to normal. For example, when the disaster information is canceled or the access (data communication) to the NAS 4 is restored, the notification processing unit 413 transmits the restoration notification to the management server 1 . The recovery notification includes identification information (NAS_ID) of the recovered NAS 4 .

In addition to the above-described processes, the control unit 41 executes a process of authenticating a user who accesses the NAS 4, a process of saving new data (files) uploaded from each user terminal 5, and the like.

[Management Server 1]
As shown in FIG. 2, the management server 1 includes a control unit 11, a storage unit 12, an operation display unit 13, a communication unit 14, and the like. The management server 1 is an information processing device such as a personal computer.

The communication unit 14 connects the management server 1 to the network N1 by wire or wirelessly, and performs data communication according to a predetermined communication protocol with the cloud server 2, the NAS 4, and the user terminal 5 via the network N1. communication interface.

The operation display unit 13 is a user interface including a display unit such as a liquid crystal display or an organic EL display that displays various types of information, and an operation unit such as a mouse, keyboard, or touch panel that receives operations.

The storage unit 12 is a nonvolatile storage unit such as an HDD, SSD, or flash memory that stores various types of information. The storage unit 12 stores a data management program for causing the control unit 11 to execute data management processing (see FIG. 7), which will be described later. For example, the data management program is non-temporarily recorded on a computer-readable recording medium such as a CD or DVD, read by a reading device (not shown) such as a CD drive or DVD drive provided in the management server 1, and stored. stored in the unit 12; Note that the data management program may be distributed from another server and stored in the storage unit 12 .

The storage unit 12 also stores data such as the device information D1 and the communication state information D2. FIG. 5 is an example of the device information D1, and FIG. 6 is an example of the communication state information D2.

As shown in FIG. 5, in the device information D1, a customer ID, NAS_ID, cloud server ID, and user terminal ID are associated and registered for each customer. The customer ID is identification information of a customer who uses the data management service. Customer ID "0001" is identification information of customer A (see FIG. 1). The NAS_ID is identification information of the NAS 4 , the cloud server ID is identification information of the cloud server 2 , and the user terminal ID is identification information of the user terminal 5 . The management server 1 manages the NAS 4 and the user terminals 5 connected to the NAS 4 for each customer using the device information D1.

As shown in FIG. 6, information indicating the communication status of each NAS 4 is registered in the communication status information D2. For example, when the NAS 4 acquires disaster information, "abnormality (disaster)" is registered in the communication status information D2. FIG. 6 shows that the communication status of NAS 4 (NAS_ID "n0001") of customer A is abnormal. The management server 1 manages the communication status of the NAS 4 located at each customer by means of the communication status information D2.

The control unit 11 has control devices such as a CPU, ROM, and RAM. The CPU is a processor that executes various kinds of arithmetic processing. The ROM stores in advance control programs such as BIOS and OS for causing the CPU to execute various processes. The RAM stores various information and is used as a temporary storage memory (work area) for various processes executed by the CPU. The control unit 11 controls the management server 1 by causing the CPU to execute various control programs pre-stored in the ROM or storage unit 12 .

Specifically, the control unit 11 includes various processing units such as a determination processing unit 111 and a notification processing unit 112 . The control unit 11 functions as the various processing units by executing various processing according to the data management program. Also, part or all of the processing units included in the control unit 11 may be configured by electronic circuits. The data management program may be a program for causing a plurality of processors to function as the various processing units.

The determination processing unit 111 determines the communication state of NAS4. Specifically, the determination processing unit 111 determines the communication state of the NAS 4 based on the disaster information acquired by the NAS 4 . For example, when the NAS 4 of customer A acquires the disaster information from an external organization and transmits the disaster notification to the management server 1, the management server 1 receives the disaster notification. The determination processing unit 111 determines that the communication state of the NAS 4 of the customer A is abnormal when the disaster notification is received. When the determination processing unit 111 determines that the communication state of the NAS 4 is abnormal, it registers "abnormal" information in the communication state information D2 (see FIG. 6). The determination processing unit 111 is an example of the determination processing unit of the present invention.

The notification processing unit 112 transmits an abnormality notification (disaster notification) indicating that the communication state is abnormal to the user terminal 5 when the determination processing unit 111 determines that the communication state of the NAS 4 is abnormal. Specifically, when the communication state of the NAS 4 is abnormal, the notification processing unit 112 transmits a disaster notification indicating that the NAS 4 has been damaged to the user terminal 5 associated with the NAS 4 . The disaster notification includes identification information (NAS_ID) of the NAS 4 that has suffered a disaster.

Here, the notification processing unit 112 may transmit the disaster notification to all the user terminals 5 associated with the NAS 4 that has suffered a disaster, or only the user terminal 5 that is editing the data saved in the NAS 4 that has suffered a disaster. You may transmit the said disaster notice to. In the example shown in FIG. 3, the notification processing unit 112 transmits the disaster notification to each of the user terminals 5A and 5B.

Further, when the communication state of NAS 4 is restored to normal and the notification of restoration is received from NAS 4 , notification processing unit 112 transmits the notification of restoration to cloud server 2 . As another embodiment, the notification processing unit 112 may transmit the restoration notification to the user terminal 5 to which the disaster notification is transmitted. The restoration notification includes the identification information (NAS_ID) of the NAS 4 whose communication state has been restored. The notification processor 112 is an example of the notification processor of the present invention.

As another embodiment, the notification processing unit 112 sends the data being edited to the cloud server 2 when an abnormality occurs in the communication state of the NAS 4 while the user terminal 5 is editing the data stored in the NAS 4. A save instruction to save (save) may be sent to the user terminal 5 . In this case, the user terminal 5 saves the data in the cloud server 2 according to the evacuation instruction received from the management server 1 . The notification processing unit 112 is an example of the saving processing unit of the present invention.

[User terminal 5]
As shown in FIG. 2, the user terminal 5 includes a control section 51, a storage section 52, an operation display section 53, a communication section 54, and the like. In the example shown in FIG. 1, a user terminal 5A arranged inside the office and a user terminal 5B arranged outside the operator are shown.

The communication unit 54 is a communication interface for connecting the user terminal 5 to a network by wire or wirelessly, and performing data communication according to a predetermined communication protocol with other devices via the network. For example, the communication unit 54 of the user terminal 5A connects to the network N2 (for example, LAN) by wire or wirelessly, and performs data communication according to a predetermined communication protocol with the NAS 4 via the network N2. Also, the communication unit 54 of the user terminal 5A performs data communication according to a predetermined communication protocol with the management server 1 and the cloud server 2 via the communication device 3 connected to the network N2. The communication unit 54 of the user terminal 5B is connected to the network N1 (for example, the Internet) by wire or wirelessly, and communicates data with the management server 1, the cloud server 2, and the NAS 4 via the network N1 according to a predetermined communication protocol. carry out communication.

The operation display unit 53 is a user interface including a display unit such as a liquid crystal display or an organic EL display that displays various information, and an operation unit such as a mouse, keyboard, or touch panel that receives operations.

The storage unit 52 is a nonvolatile storage unit such as an HDD, SSD, or flash memory that stores various information. The storage unit 52 stores a data management program for causing the control unit 51 to execute data management processing (see FIG. 7), which will be described later. For example, the data management program is non-temporarily recorded on a computer-readable recording medium such as a CD or DVD, and read and stored by a reading device (not shown) such as a CD drive or DVD drive provided in the user terminal 5. stored in unit 52 . Note that the data management program may be distributed from another server and stored in the storage unit 52 .

In this embodiment, an application corresponding to the data management service is installed in the user terminal 5 and stored in the storage unit 52 . As another embodiment, the application may be stored in a server (eg, management server 1 or cloud server 2), and the server may provide the website of the data management service. In this case, the user terminal 5 can access the website and use the application.

The control unit 51 has control devices such as a CPU, ROM, and RAM. The CPU is a processor that executes various kinds of arithmetic processing. The ROM stores in advance control programs such as BIOS and OS for causing the CPU to execute various processes. The RAM stores various information and is used as a temporary storage memory (work area) for various processes executed by the CPU. The control unit 51 controls the user terminal 5 by causing the CPU to execute various control programs pre-stored in the ROM or storage unit 52 .

Specifically, the control unit 51 includes various processing units such as a data acquisition processing unit 511, an editing processing unit 512, and a saving processing unit 513. The control unit 51 functions as the various processing units by executing various processing according to the data management program. Also, part or all of the processing units included in the control unit 51 may be configured by electronic circuits. The data management program may be a program for causing a plurality of processors to function as the various processing units.

The data acquisition processing unit 511 acquires data from the NAS 4 according to user's operation. For example, when the user accesses the NAS 4 on the user terminal 5, selects desired data (file), and performs a download operation, the data acquisition processing unit 511 acquires the data. The data acquisition processing unit 511 stores the acquired data in the storage unit 52 .

The editing processing unit 512 executes editing processing of the data according to user's operation. For example, when the user edits the data on the user terminal 5, the editing processor 512 updates (overwrites) the data. In addition, the editing processing unit 512 stores (uploads) the edited data in the NAS 4 according to the user's operation.

The saving processing unit 513 temporarily saves (saves) the data being edited in the cloud server 2 when an abnormality occurs in the communication state of the NAS 4 while the data is being edited. For example, when the NAS 4 acquires the disaster information and transmits the disaster notification to the management server 1 while the user terminal 5 is editing the data, the user terminal 5 receives the disaster notification from the management server 1 . When receiving the disaster notification, the save processing unit 513 interrupts access to the NAS 4 and transmits the data being edited to the cloud server 2 for storage.

Specifically, when the evacuation processing unit 513 receives the disaster notification from the management server 1, the data being edited, the identification information (NAS_ID) of the NAS 4 that is the storage source of the data, and the user terminal 5 identification information (user terminal ID) to the cloud server 2 . The save processing unit 513 is an example of the save processing unit of the present invention.

[Cloud server 2]
As shown in FIG. 2, the cloud server 2 includes a control unit 21, a storage unit 22, a communication unit 23, and the like. The cloud server 2 is a storage device (data server) connected to a network so as to be accessible from the user terminal 5 .

The communication unit 23 connects the cloud server 2 to the network N1 (see FIG. 1) by wire or wirelessly, and exchanges data according to a predetermined communication protocol with the management server 1, NAS 4, and user terminal 5 via the network N1. A communication interface for executing communication.

The storage unit 22 is a nonvolatile storage unit such as an HDD, SSD, or flash memory that stores various types of information. The storage unit 22 stores a data management program for causing the control unit 21 to execute data management processing (see FIG. 7), which will be described later. For example, the data management program is non-temporarily recorded on a computer-readable recording medium such as a CD or DVD, and read and stored by a reading device (not shown) such as a CD drive or DVD drive provided in the cloud server 2. Stored in unit 22 . Note that the data management program may be distributed from another server and stored in the storage unit 22 .

The control unit 21 has control devices such as a CPU, ROM, and RAM. The CPU is a processor that executes various kinds of arithmetic processing. The ROM stores in advance control programs such as BIOS and OS for causing the CPU to execute various processes. The RAM stores various information and is used as a temporary storage memory (work area) for various processes executed by the CPU. The control unit 21 controls the cloud server 2 by causing the CPU to execute various control programs pre-stored in the ROM or storage unit 22 .

Specifically, the control unit 21 includes various processing units such as a reception processing unit 211 and a transmission processing unit 212 . The control unit 21 functions as the various processing units by executing various processing according to the data management program. Also, part or all of the processing units included in the control unit 21 may be configured by electronic circuits. The data management program may be a program for causing a plurality of processors to function as the various processing units.

The reception processing unit 211 receives the data from the user terminal 5 . For example, when an abnormality occurs in the communication state of the NAS 4 while the user terminal 5 is editing the data, the user terminal 5 transmits the data being edited to the cloud server 2 . The reception processing unit 211 receives the data being edited, the NAS_ID, and the user terminal ID from the user terminal 5 and stores them in the storage unit 22 . The storage unit 22 temporarily stores one or more pieces of data associated with NAS_IDs and user terminal IDs. In the example shown in FIG. 3, the data d1 received from the user terminal 5A and the data d2 received from the user terminal 5B are temporarily stored in the cloud server 2. FIG.

The transmission processing unit 212 saves the data in the NAS 4 when the communication state of the NAS 4 is restored normally after the data being edited is saved (saved) in the cloud server 2 . For example, when the communication state of the NAS 4 of customer A is restored to normal, the transmission processing unit 212 transmits the data associated with the NAS_ID of the NAS 4 of customer A to the NAS 4 . In the example shown in FIG. 3, the transmission processing unit 212 transmits the data d1 and the data d2 to the NAS 4 associated with the NAS_ID. When the NAS 4 receives the data d 1 and the data d 2 from the cloud server 2 , it overwrites and saves them in the storage unit 42 . The transmission processing unit 212 is an example of the storage processing unit of the present invention.

[Data management processing]
An example of the procedure of data management processing executed in the data management system 10 will be described below with reference to FIG.

The present invention can be regarded as an invention of a data management method for executing one or more steps included in the data management process. Also, one or more steps included in the data management process described here may be omitted as appropriate. Further, each step in the data management process may have a different execution order as long as the same effects are produced. Furthermore, here, the case where the control unit 11 of the management server 1, the control unit 21 of the cloud server 2, the control unit 41 of the NAS 4, and the control unit 51 of the user terminal 5 execute each step in the data management process is taken as an example. However, in other embodiments, one or more processors may distribute and execute each step in the data management process.

In step S11, the control unit 51 of the user terminal 5 accesses the NAS 4 and transmits a download request for desired data (file) according to the user's operation.

Next, in step S12, the controller 41 of the NAS 4 transmits data to the user terminal 5 in response to the download request.

Next, in step S13, upon receiving the data, the control unit 51 of the user terminal 5 executes editing processing according to the user's operation. For example, the control unit 51 stores (uploads) the edited data in the NAS 4 .

In step S14, the control unit 41 of the NAS 4 determines whether or not disaster information has been acquired. For example, the control unit 41 accesses an external organization (such as the Meteorological Agency) to determine the presence or absence of disaster information. When the control unit 41 acquires the disaster information (S14: Yes), the process proceeds to step S15.

In step S<b>15 , the control unit 41 transmits a disaster notification to the management server 1 indicating that the NAS 4 has been damaged.

Next, in step S<b>16 , upon receiving the disaster notification from the NAS 4 , the control unit 11 of the management server 1 transmits the disaster notification to the user terminal 5 .

Next, in step S<b>17 , upon receiving the disaster notification from the management server 1 , the control unit 51 of the user terminal 5 transmits the data being edited and the identification information (NAS_ID) of the NAS 4 to the cloud server 2 .

Next, in step S<b>18 , upon receiving the data and the NAS_ID from the user terminal 5 , the control unit 21 of the cloud server 2 temporarily stores them in the storage unit 22 .

In step S19, the control unit 41 of the NAS 4 determines whether or not the communication state of the NAS 4 has been restored to normal. When the communication state of the NAS 4 is restored to normal (S19: Yes), the control unit 41 shifts the process to step S20.

In step S20, the control unit 41 transmits to the management server 1 a restoration notification indicating that the NAS 4 has been restored.

Next, in step S<b>21 , the control unit 11 of the management server 1 transmits the recovery notification to the cloud server 2 upon receiving the recovery notification from the NAS 4 .

Next, in step S22, upon receiving the restoration notification from the management server 1, the control unit 21 of the cloud server 2 transmits the temporarily stored data to the NAS 4 associated with the data.

In step S<b>23 , upon receiving the data from the cloud server 2 , the control unit 41 of the NAS 4 overwrites the data in the storage unit 42 . As described above, the data management system 10 executes the data management processing.

As described above, the data management system 10 according to this embodiment includes the NAS 4 that stores data and the user terminal 5 that uses the data stored in the NAS 4, determines the communication state of the NAS 4, When 5 determines that the communication state of NAS 4 is abnormal while editing the data stored in NAS 4, the data being edited is stored (saved) in cloud server 2 with which user terminal 5 can communicate. Further, when the data management system 10 determines that the communication state of the NAS 4 is normal after the data being edited is saved in the cloud server 2, the data saved in the cloud server 2 is saved in the NAS 4.

According to the above configuration, when a communication error occurs between the NAS 4 and the user terminal 5 while data stored in the NAS 4 is being edited in the user terminal 5, the data is temporarily saved in the cloud server 2. be able to. Also, when communication is restored between the NAS 4 and the user terminal 5, the data temporarily stored in the cloud server 2 can be stored in the NAS 4 without intervention of the user's operation.

[Other embodiments]
The invention is not limited to the embodiments described above. Other embodiments of the present invention will be described below.
As another embodiment of the present invention, when the control unit 11 of the management server 1 receives the disaster notification from the NAS 4, the control unit 11 notifies the user terminal 5 of a message asking whether to save the data to the cloud server 2. You may FIG. 8 shows an example of a notification page P1 containing the message. The user selects whether or not to save the data to the cloud server 2 on the notification page P<b>1 displayed on the user terminal 5 . When the user presses "OK" on the notification page P1, the control unit 51 of the user terminal 5 transmits the data to the cloud server 2 (step S17 in FIG. 7).

Also, as another embodiment of the present invention, the control unit 11 of the management server 1 may determine the communication state of the NAS 4 . For example, the control unit 11 may acquire the disaster information (disaster prevention information) from an external organization and determine whether or not the NAS 4 will be unable to communicate. The control unit 11 transmits a disaster notification to the user terminal 5 when it determines that the NAS 4 becomes incommunicable. Also, the control unit 11 transmits a recovery notification to the cloud server 2 when determining that the communication state of the NAS 4 has been recovered.

Further, as another embodiment of the present invention, the control unit 11 of the management server 1 may transmit the recovery notification to the user terminal 5 when receiving the recovery notification from the NAS 4 . In this case, when the control unit 51 of the user terminal 5 receives the restoration notification from the management server 1 , it transmits the data to the NAS 4 .

As another embodiment of the present invention, when the same data is edited simultaneously by a plurality of user terminals 5, the control unit 41 of the NAS 4 receives the edited data from the cloud server 2 after restoration of the NAS 4. Check who last updated the data. If the last updater of the received data is the same as the last updater of the original data stored in the storage unit 42, the control unit 41 overwrites and saves the data. On the other hand, when the last updater of the received data is different from the last updater of the original data stored in the storage unit 42, the control unit 41 saves the received data under a different file name. , to notify the last updater of the received data of warning information or the like.

In the above embodiment, the management server 1 determines the communication status of the NAS 4 based on disaster information. bandwidth, etc.), the communication state of the NAS 4 and the communication state between the NAS 4 and the user terminal 5 may be determined.

In the above-described embodiment, the data management system 10 corresponds to the data management system of the invention, but the data management system of the invention is not limited to this. For example, the data management system of the present invention may consist of the management server 1 alone.

1: Management server 2: Cloud server 3: Communication device 5: User terminal 10: Data management system 111: Judgment processing unit 112: Notification processing unit 211: Reception processing unit 212: Transmission processing unit 411: Update processing unit 412: Disaster information Acquisition processing unit 413: Notification processing unit 511: Data acquisition processing unit 512: Editing processing unit 513: Saving processing unit

Claims (11)

A data management system including a first storage device that stores data and a user terminal that uses the data stored in the first storage device,
a determination processing unit that determines the communication state of the first storage device;
When the determination processing unit determines that the communication state of the first storage device is abnormal while the user terminal is editing the data stored in the first storage device, the data being edited is transferred to the user terminal. A save processing unit that saves in a second storage device that can communicate with
When the determination processing unit determines that the communication state is normal after the data being edited is stored in the second storage device, the data stored in the second storage device is stored in the first storage device. a saving processing unit for saving;
A data management system with wherein the save processing unit transmits the data being edited and the identification information of the first storage device to the second storage device;
The data management system of claim 1. further comprising a notification processing unit that, when the determination processing unit determines that the communication state of the first storage device is abnormal, transmits an abnormality notification indicating that the communication state is abnormal to the user terminal;
When the user terminal receives the abnormality notification, the save processing unit transmits the data being edited and the identification information of the first storage device to the second storage device.
The data management system according to claim 2. The first storage device and the user terminal are connected by a first communication line, and the second storage device and the user terminal are connected by a second communication line,
The data management system according to any one of claims 1 to 3. The determination processing unit determines the communication state based on disaster information.
The data management system according to any one of claims 1 to 3. The data management system further includes a management server capable of communicating with each of the first storage device, the second storage device, and the user terminal,
The management server associates and stores the identification information of the first storage device, the identification information of the user terminal, and the communication state.
The data management system according to any one of claims 1 to 5. When the first storage device acquires the disaster information, the management server transmits a disaster notification indicating that the first storage device has been damaged to the user terminal,
When the user terminal receives the disaster notification, the user terminal transmits the data being edited and the identification information of the first storage device to the second storage device.
The data management system according to claim 6. When the first storage device is recovered, the management server transmits a recovery notification indicating that the first storage device has been recovered to the second storage device,
The second storage device transmits the data being edited to the first storage device when the recovery notification is received.
The data management system according to claim 6 or 7. The first storage device is a NAS (Network Attached Storage), and the second storage device is a cloud server,
The data management system according to any one of claims 1 to 8. one or more processors
a determination step of determining a communication state of a first storage device that stores data;
The user terminal using the data stored in the first storage device determines that the communication state of the first storage device is abnormal in the determining step while the data stored in the first storage device is being edited. a saving step of saving the data being edited in a second storage device with which the user terminal can communicate;
If the communication state is determined to be normal in the determination step after the data being edited is stored in the second storage device, the data stored in the second storage device is stored in the first storage device. a saving step that causes
data management methods that perform a determination step of determining a communication state of a first storage device that stores data;
The user terminal using the data stored in the first storage device determines that the communication state of the first storage device is abnormal in the determining step while the data stored in the first storage device is being edited. a saving step of saving the data being edited in a second storage device with which the user terminal can communicate;
If the communication state is determined to be normal in the determination step after the data being edited is stored in the second storage device, the data stored in the second storage device is stored in the first storage device. a saving step that causes
data management program for executing on one or more processors.