JP7057541B2 - Network storage system - Google Patents

Description

The present invention relates to a network storage system connected to an information processing device via a communication network, and more particularly to a network storage system for storing at least mail data of a mail client.

In recent years, mail systems that handle e-mail (hereinafter, simply referred to as e-mail) have been formed in various forms.

In the conventional mail system, mails addressed to clients whose accounts are registered in the mail server are sequentially accumulated, and the client terminal receives (downloads) mails addressed to itself to the mail server via the network, which is often used. ing. In this aspect, the mail system (recipient mail server) has a storage for temporarily storing mail addressed to a client and its attached file.

On the other hand, today's mail systems often store all mails and attachments addressed to each account in the network. This aspect realizes the entire processing from browsing to transmission / reception using a mail server arranged on the Internet, and is called a Web mail system or a cloud mail system. In addition, a similar mail server is also operated in a company or the like. In this aspect, the mail system (recipient mail server) has a storage for storing a large amount of mail addressed to a client and its attached file for a long period of time. It is necessary to prepare enough storage capacity.

The storage capacity of the mail system needs to be increased according to the operating status together with the arithmetic resources related to the mail transmission / reception of the mail system. However, adding more than necessary adversely affects the cost. Therefore, a mechanism for reducing the capacity of this storage without impairing its function is being studied.

Patent Document 1 is mentioned as a related technique. This Patent Document 1 discloses a technique for deduplication of attached files in message delivery associated with an e-mail system or the like. In this technology, when the mail server delivers an email with an attachment to a specified destination, if the attachment is a saved data file in its own system, it provides a link to the saved data file. In addition, the identity of the attached file is identified. In this system, the mail server provides a link to the identity-identified attachment instead of saving it to a new disk. In addition, as one aspect, the system also discloses an aspect of identifying whether a data file that has already been treated as deleted by another account is a data file for which the identity with the attached file is to be identified. are doing.

Special Table 2015-525936

Patent Document 1 is generated (copied) in connection with the transmission / reception of file data between users when providing integrated services such as network drive service and mail service, such as the global service related to the applicant of the same document. ) Is replaced with a link to reduce the physical storage area (data capacity). The company's service also integrates a cloud service for document creation and a cloud service for creating presentation files, and various file data are exchanged by various methods among many users, and technology related to file deduplication is useful. Imagine that it works for you.

On the other hand, the mechanism disclosed in Patent Document 1 needs to identify whether the newly accepted data file such as an attached file is the same as the existing data file. The processing resources required for this identification increase as the number of retained files to be compared increases. In this regard, Patent Document 1 also discloses that the process of comparing whether a data file matches a data file by a hash function or a meta tag is reduced in resources.

The technique disclosed in Patent Document 1 contains many useful things. However, these mechanisms require the existing system (service) to be rebuilt or newly created. On the other hand, many mail systems are already in operation in the real world, and for example, replacing one's own mail system with another system can cause a great burden.

In recent years, the amount of storage required for mail systems has tended to increase day by day, and may continue to increase in the future.

We also want to avoid overburdening the computing power of existing mail systems. If capacity efficiency is achieved by information processing in a mail server (mail application), the load on the mail server will increase, which may hinder existing work from the viewpoint of performance. Therefore, whether or not capacity efficiency can be achieved on the mail server (mail application) side largely depends on the performance and specifications of the mail server.

An object of the present invention has been made in view of the above background, and an object of the present invention is to provide a storage system for a mail system that is compatible with an existing mail system and enables a reduction in the amount of stored mail data. ..

The network storage system according to an embodiment of the present invention is a network storage system linked on a network with a mail server corresponding to a mailing list function, and is an e-mail of a mailing list address and one or more mail addresses included in the mailing list. It is a storage area where data (hereinafter, e-mail is abbreviated as e-mail) can be stored in relation to transmission and reception, and file data associated with each mail can be stored in relation to each mail. When a write request is received for the storage area , which is, and the mail data of the mail using the mailing list from the mail server, the mail data using the mailing list is stored in the storage area reserved for the mailing list address. In addition to storing, when a write request regarding the mail data of the mail to each mail address included in the mailing list is received from the mail server, each of them is stored in the storage area reserved for each of the corresponding mail addresses. In the mail data receiving means for storing mail data, the storage area reserved for the mailing list address by the mail data receiving means, and the storage area reserved for each of the mail addresses included in the mailing list . If the mail using the mailing list contains the file data associated with the mail before saving each mail data requested to be written by the mail server, the storage reserved for the mailing list address. While storing the file data in the area, the file data is not copied to each storage area reserved for each mail address included in the mailing list, but for each mail address included in the mailing list. Each of the reserved storage areas is provided with a record management means for recording a link to the file data recorded in the storage area of the mailing list address in place of the file data.

The method for storing mail data by the storage system according to the embodiment of the present invention is a storage area capable of storing a mailing list address and mail data of one or more mail addresses included in the mailing list in relation to transmission and reception, respectively. It is a method of storing mail data by a network storage system having a storage area that can store the file data associated with each mail in association with each mail, and the network storage system supports the mailing list function. When a write request for mail data of a mail using a mailing list is received from a mail server, the mail data using the mailing list is stored in the storage area reserved for the mailing list address, and the above. When a write request for the mail data of the mail to each mail address included in the mailing list is received from the mail server, each mail data is stored in the storage area reserved for each of the corresponding mail addresses. Along with the processing, each mail data requested to be written by the mail server is stored in the storage area reserved for the mailing list address and the storage area reserved for each of the mail addresses included in the mailing list. If the mail using the mailing list contains the file data associated with the mail, the file data is stored in the storage area reserved for the mailing list address, while the mailing list is stored. Instead of copying the file data to each storage area reserved for each email address included in, the mailing list address is assigned to each storage area reserved for each email address included in the mailing list. It is characterized in that mail data in the storage area is managed by executing a process of recording a link to the file data recorded in the storage area instead of the file data.

The program according to the embodiment of the present invention is a device included in a network storage system that provides a storage area to another information processing device via a network, and is linked with a mail server corresponding to a mailing list function on the network. The processor of the network storage device handles the storage area so that the mail data of the mailing list address and one or more mail addresses included in the mailing list can be stored in relation to transmission and reception, respectively, and each of the storage areas. The file data associated with the mail is handled so that it can be stored by associating it with each mail, and it is secured for the mailing list address when receiving a write request regarding the mail data of the mail using the mailing list from the mail server. The mail data using the mailing list is stored in the storage area, and when a request for writing the mail data of the mail to each mail address included in the mailing list is received from the mail server, the corresponding mail address is received. It is included in the mail data receiving means for storing each mail data in the storage area reserved for each, the storage area reserved for the mailing list address by the mail data receiving means, and the mailing list. The storage area reserved for each e-mail address contains the file data associated with the e- mail in the e-mail using the mailing list before saving each e-mail data requested to be written by the e-mail server. If so, the file data is stored in the storage area reserved for the mailing list address, while the file data is copied to each storage area reserved for each mail address included in the mailing list. Instead of recording the link to the file data recorded in the storage area of the mailing list address in each of the storage areas reserved for each mail address included in the mailing list . It is characterized by operating as a record management means.

According to the present invention, it is possible to provide a storage system for a mail system that has an affinity with an existing mail system and enables a reduction in the amount of stored mail data.

It is a block diagram which shows the structure of the network storage system 1 of 1st Embodiment of this invention. It is a flowchart of the processing operation of the mail data storage method. It is a block diagram which shows the structure of the network storage system 2 of the 2nd Embodiment of this invention. It is explanatory drawing for demonstrating the operation of the whole network system to affect mail delivery. (Create a link to the directory for the inbound folder) It is explanatory drawing for demonstrating the operation of the whole network system to affect mail delivery. (Create a link to the user directory in the storage) It is a block diagram which showed one configuration example for handling the difference file which accompanies the change / update of each file data which generated the link. It is a block diagram which showed one configuration example of the network storage system of this invention.

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

[First Embodiment]
FIG. 1 is a block diagram showing a configuration of a storage system 1 according to an embodiment.

The storage system 1 includes a mail data reception unit 11 and a record management unit 12 together with a storage unit 10.

The storage unit 10 may be configured by using any storage hardware, and may be configured by an HDD (Hard Disk Drive), an SSD (Solid State Drive), or the like. In addition, RAID (Redundant Arrays of Inexpensive Disks) may be formed as needed.

The storage unit 10 is configured to have a first storage area configured to store e-mail data of mailing list addresses and e-mail data of one or more e-mail addresses included in the mailing list. A second storage area is logically provided. The mailing list may be managed by the existing mail server (mail server application). The first storage area and the second storage area are prepared corresponding to the mailing list and the mail account handled by the mail server, respectively.

The mail data receiving unit 11 is configured to receive mail data to be stored from the mail server and store it in a predetermined area of the storage unit 10. The mail data reception unit 11 receives a write request from the mail server and puts it in the mail data storage area for mailing list (first storage area) or the mail data storage area for each account (second storage area) for each mail. Store.

That is, when a mailing list mail recording command is received from the mail server, the mailing list mail data is stored in the first storage area, and the mail recording command from the mail server to each mail address is received. At that time, the notified e-mail data is stored in the storage area of the corresponding e-mail address when an e-mail recording command is appropriately received.

The record management unit 12 executes the following processing before the mail data receiving unit 11 stores the mail data in the storage unit 10. When an attached file is attached to the mail of the mailing list, the record management unit 12 receives a recording command from the mail server to the storage area of each destination included in the mailing list (notification to save this attached file). Instead of executing the above, record the link to the attachment recorded in the storage area of the mailing list address to the individual destination instead of the attachment data.

Next, a processing operation example of the method of storing mail data by the storage system 1 will be described.

FIG. 2 is a flowchart showing a processing operation example of a method of storing mail data.

The mail data receiving unit 11 identifies a request for writing mail data from the mail server to the storage unit 10 (S101).

The mail data record management unit 12 determines whether the mail data is sent to a plurality of destinations at the same time before actually storing the mail data in the storage unit 10 (S102).

Then, when the mail data is sent to a plurality of destinations at the same time, the mail data record management unit 12 stores one mail data as a link destination and writes the link information in the rest instead (S103). Emails addressed to the mailing list can be linked to in the save folder. Although not limited, it may be determined whether the mail data is sent to a plurality of destinations at the same time by using the storage of the mail data addressed to the mailing list as a trigger.

Finally, the mail data record management unit 12 responds to the completion of writing the mail data (S104).

The mail data record management unit 12 stores the mail data in the designated storage area unless the mail data is sent to a plurality of destinations at the same time (S105).

By storing the mail data as shown in this flowchart, the access to the mail data is as follows.
1. 1. When each mail data is accessed, the storage system 1 responds to the mail data if it exists in the corresponding area.
2. 2. When each mail data is accessed, the storage system 1 responds to the mail data by following the link information if there is link information in the corresponding area.
In either case, the operation is the same as before from the user and peripheral devices.

In the conventional mail system, when the same mail and its attached file are delivered to multiple destinations such as to a mailing list, the mail server stores duplicate mail data in the storage area for each destination. To.

By performing the processing linked with the mail data reception unit 11 and the record management unit 12, if the attached file is attached to the mail of the mailing list, the actual file data is stored only in the mail storage area of the mailing list, and the mailing list In the mail storage area of individual addresses, the actual file data is not stored and only the link is recorded. Therefore, as in the past, the attached file attached to all the destinations of the mailing list is notified, and the attached file is not recorded in the storage area of each destination. Further, according to this mechanism, it is possible to realize a mechanism for reducing the amount of stored mail data without changing the mail server and the interface to the user.

Therefore, for example, when a user sends an e-mail with an attached file to a mailing list, the mail server operates as it is, and the storage system 1 autonomously avoids duplicate storage of the attached file when saving the data and has a storage capacity. Can reduce the consumption of. That is, it is possible to reduce the amount of stored mail data without affecting the user's operation or the operation of the mail server.

[Second Embodiment]
The network storage system 2 of the second embodiment enhances the function of the network storage system 1 of the first embodiment.

FIG. 3 is a block diagram showing a configuration of the storage system 2 of the second embodiment.

The storage system 2 includes an antivirus unit 13 in addition to the configuration of the storage system 1.

The antivirus unit 13 is an antivirus mechanism provided in the storage system, and scans the file data stored in the storage area for viruses according to the settings of the administrator.

In the real-time scan, the antivirus unit 13 scans the mail data including the attached file received from the mail server. Then, when there is no problem in the scan result, the antivirus unit 13 stores it in the storage area. At this time, in the case of mailing list mail data, the storage system 2 does not perform virus scanning of the file data via a link to the file data recorded in the storage area of each destination.

Further, in the periodic scan, the antivirus unit 13 scans the mail data including the attached file received from the mail server and stored in the storage area. Also in this case, in the case of mailing list mail data, the storage system 2 does not perform virus scanning of the file data via a link to the file data recorded in the storage area of each destination.

As a result, since the mail data to the individual addresses to be scanned is reduced by the duplication countermeasure, the calculation resource required for scanning is reduced for the storage system that stores all of them.

Also, when scanning a file in the storage from the client side, the file that has been scanned once and has not been updated after that should be grasped by the scanning software based on the information on the storage side of the file and excluded from the scanning target. Can be done. By using this function, when scanning on each client side, if it is executed by the client that received it first, the scan result for the file is retained, and other clients do not need to scan again due to the result. Therefore, in the system using the network storage system 2, the load of scanning on the client side can be reduced.

[Third Embodiment]
The network storage system 3 of the third embodiment enhances the function of the network storage system 1 of the first embodiment. The function of the network storage system 2 of the second embodiment may be enhanced. Since the configuration of the network storage system 3 is the same as that of the network storage system 1, the description thereof will be omitted.

The network storage system 1 of the first embodiment is necessary to record the attachment file recorded in the storage assigned to the destination included in the mailing list when the attachment file is transmitted using the mailing list. The storage area can be reduced. On the other hand, the network storage system 3 of the third embodiment reduces the storage area required for recording both the mail and the attached file recorded in the storage assigned to the destination included in the mailing list. ..

The record management unit 12 receives, via the mail data reception unit 11, a mail recording command for the mailing list from the mail server and a mail recording command for each mail address included in the mailing list to the storage unit 10. When identified, the link information to the mail data of the mailing list stored in the storage area of the mailing list address is stored without storing the notified mail data for the recording command to each address of the mail. In addition, the recording command to each address of the attached file is also replaced with the link information.

By operating the record management unit 12 in this way, it is possible to reduce the storage capacity for storing the mail itself of each address.

When the record management unit 12 identifies the change processing of an individual user to the file data recorded in the storage area for the mailing list by the mail data reception unit 11, the change content is used as a difference file for the file data of the user. You may manage it.

By operating in this way, even if many users change or update the files spread on the mailing list, the changes or updates can be managed by the difference data, and the storage capacity can be substantially reduced.

Further, when the record management unit 12 identifies the storage process of an individual user of the file data recorded in the storage area for the mailing list by the mail data reception unit 11, the storage destination specified by the user is managed by the own storage system. If it is a storage area to be stored, a link to the file data recorded in the storage area for the mailing list may be placed in the corresponding storage destination so as not to substantially store the file data.

By operating in this way, for example, if the user specifies the storage system as the storage destination of the attached file, the amount of storage required for saving the attached file can be reduced.

Further, for example, in the case of a VM (Virtual Machine) that operates with this storage system as a recording unit, for example, the C drive (virtual C drive) or desktop (virtual desktop) of the VM is specified as the storage destination of the attached file. Even so, the amount of storage required to save the attached file can be reduced.

[Configuration example]
Hereinafter, the network storage system 3 will be described by explaining the operation in some states of the mail system.

4 and 5 are explanatory views for showing the operation of the entire network system related to mail delivery. The network storage system 3 is represented as Storage 031 in the figure.

In the following description, the mail sender is a terminal (sender 001), and the mail server (Mail server 021) distributes mail addressed to the mailing list to mailing list members. This mailing list is composed of three addresses, receiver011, receiver012, and receiver013 as members.

In the network storage system 3 (Storage031), a mailing list storage area (folder) and a storage area (folder) for each account (address) are set and registered in advance as their respective storage areas.

The mail addressed to the mailing list sent by the mail sender terminal (sender 001) is a mail with an attached file, and the attached file (Mail attached file 051) is sent together with the body (Mail txt 041).

FIG. 4 shows the process of generating a link to the mailing list mail to the receiving folder of each member included in the mailing list when the mailing list mail is received.

When a mail addressed to a mailing list is received, the mail server (Mail server021) sends a mail sent by a sender terminal (sender 001) in the storage unit 10 of the network storage system 3 as a process of the mailing list. A record command to the receive folder / mail / mailshare061 for the mail and a record command to the receive folders / mail / reciever001, / mail / reciever002, and / mail / reciever003 to the mail addresses of each member included in the mailing list. Generate.

The network storage system 3 (record management unit 12) sends a record command to the receiving folder / mail / mailshare061 for the mailing list mail and the mail address of each member included in the mailing list by the mail server (Mail server021). When identifying a record command to the mail receiving folders / mail / reciever001, / mail / reciever002, and / mail / reciever003, the receiving folders / mail / reciever001, / mail / reciever002, and / mail / reciever003 are to / mail. Record the link with / mailshare061.

By providing this link, each member of the mailing list can browse the mailing list mail without any problem by browsing each receiving folder. When browsing each received folder of each member, the actual file is referred to the mail data or attached file in / mail / mailshare061. As a result, the same data file does not spread to each receiving folder of each member, and the storage capacity can be reduced.

FIG. 5 shows the process of generating a link to an email attachment when each member's attachment is stored in storage.

For example, when the member (reciever001) saves the attached file (Mail attached file 051), even if the personal folder / share / reciever001 of / share of the storage system Storage031 is specified, the record management unit 12 performs the save process. , Place a link to the attached file (file 052) stored in / mail / mailshare061 in / share / reciever001, and do not actually save the file data.

In this case as well, the actual file is in / mail / mailshare061, and the storage capacity can be reduced by substituting the same file with a link without spreading it to each personal folder.

When each file data for which a link was generated was changed or updated, the record management unit 12 identified the individual user's change to the file data (Mail attached file 051) recorded in the storage area for the mailing list. At that time, the corresponding change contents are managed as a difference file related to the file data of the corresponding user.

In this way, by managing the differences such as file changes and updates separately from the actual file, the main file Mail attached file 051 becomes valid as it is, and you can continue to enjoy capacity efficiency.

FIG. 6 is a configuration example for handling a difference file accompanying a change / update of each file data for which a link is generated.

The record management unit 12 may be configured to include a DIFF unit for performing differences, a SIS unit for determining capacity efficiency, and a MOVE unit for moving files judged to be capable of capacity efficiency to the capacity efficiency target folder mailshare. good.

First, the record management unit 12 assigns the capacity efficiency flag sis_r011: T041-F052 to the file (attached file) determined to be capacity efficiency, so that the storage Storage031 can manage the file (attached file).

Next, in the record management unit 12, since the flag is sis_r011: T041-F052, it can be determined that the file mail attached file051 attached to the mail body mail txt 041 of reciever 001 is the target, and it is stored in mailshare. Matches with the flag File052 (sis_r011: T041-F052) attached to the attached file. As a result, the links stored in the received folders / reciever001, / reciever002, / reciever003 can be linked to the actual file mail attached file051.

As described above, the network storage system to which the present invention is applied can provide a storage system for a mail system that has an affinity with an existing mail system and enables a reduction in the amount of stored mail data.

The capacity reduction effect is maintained as long as one of the users leaves the file in the storage. Further, even if the attached file is edited individually, the capacity of the entire storage area is suppressed by managing only the difference in the storage area allocated to each user.

Even if it is linked with the mail application of the mail server, the capacity reduction processing on the storage side is executed instead of executing the capacity reduction processing by the mail application function. Therefore, it is possible to realize capacity efficiency without increasing the load on the mail application and the mail server side while cooperating with the mail application.

The network storage system may be realized by using a combination of hardware and software of a computer system as illustrated in FIG. 7. The computer system includes one or more processors and memory tailored to the desired form. Further, in the form of this computer system, in each part, a mail duplication data countermeasure program is deployed in the above memory, and based on this program, hardware such as one or more processors is operated by an execution instruction group or a code group. , Should be realized. At this time, if necessary, this program may realize each part in cooperation with the functions provided by the software such as the operating system, the microprogram, and the driver.

The program data expanded in the memory appropriately includes an execution instruction group, a code group, a table file, content data, and the like that operate the processor as one or more of the above-mentioned parts.

Further, a part / all parts of the computer system may be replaced with hardware or firmware (for example, one or more LSIs: Large-Scale Integration, FPGA: Field Programmable Gate Array, a combination of electronic elements). Similarly, only a part of each part may be replaced with hardware or firmware.

In addition, this program may be temporarily recorded on a recording medium and distributed. The program recorded on the recording medium is read into the memory via wired, wireless, or the recording medium itself, and operates a processor or the like.

In the present specification, the recording medium includes a storage medium, a memory device, a storage device, and the like of similar terms. Examples of this recording medium include optical disks, magnetic disks, semiconductor memory devices, hard disk devices, tape media, and the like. Further, it is desirable that the recording medium is non-volatile. Further, as the recording medium, a combination of a volatile module (for example, RAM: Random Access Memory) and a non-volatile module (for example, ROM: Read Only Memory) may be used.

The present invention has been described by exemplifying embodiments. However, the specific configuration of the present invention is not limited to the above-described embodiment, and is included in the present invention even if there are changes to the extent that the gist of the present invention is not deviated. For example, changes such as separation and merging of the block configuration of the above-described embodiment and replacement of procedures are free as long as the gist of the present invention and the functions described are satisfied, and the above description does not limit the present invention.

In addition, some or all of the above embodiments may also be described as follows. The following notes do not limit the present invention in any way.
[Appendix 1]
A storage area configured to store the mailing list address and the e-mail data of one or more e-mail addresses included in the mailing list, respectively.
When receiving a mail recording command using a mailing list from a mail server, the mail data using the mailing list is stored in the storage area of the mailing list address, and the mail address included in the mailing list from the mail server is stored. A mail data receiving means that stores the notified mail data in the storage area of the corresponding mail address when receiving the mail recording order of the above-mentioned mail.
If the file data associated with the mail using the mailing list is included before the mail data is stored in the storage area by the mail data receiving means, the storage area of the individual destination included in the mailing list is the said. A record management means that records a link to the file data recorded in the storage area of the mailing list address to an individual destination instead of the file data without copying the file data.
A network storage system characterized by being equipped with.

[Appendix 2]
When the record management means identifies the mail recording command using the mailing list from the mail server and the mail recording command to the mail address included in the mailing list via the mail data receiving means. In response to the mail recording command, the link information to the mail data using the mailing list stored in the storage area of the mailing list address is stored without storing the notified mail data. The network storage system described in.

[Appendix 3]
When the record management means identifies an individual user's change process to the file data recorded in the storage area for the mailing list by the mail data receiving means, the change content is a difference file relating to the file data of the user. The network storage system according to Appendix 1 or 2, characterized in that it is managed as.

[Appendix 4]
When the record management means identifies the storage process of an individual user of the file data recorded in the storage area for the mailing list by the mail data receiving means, the storage destination specified by the user is managed by the own storage system. If it is a storage area, any one of Supplementary note 1 to 3 is characterized in that a link to the file data recorded in the storage area for the mailing list is arranged in the corresponding storage destination and the file data is not saved. The network storage system described in paragraph 1.

[Appendix 5]
The mail received from the mail server is scanned for viruses with reference to the storage area of the mailing list address, and the file is recorded via a link to the file data recorded in the storage area of an individual destination. The network storage system according to any one of Supplementary note 1 to 4, further comprising an antivirus unit that does not perform virus scanning of data.

[Appendix 6]
The network storage system according to any one of Supplementary note 1 to 5, wherein the record management means manages a storage area of a mailing list address and a storage area of an individual mail address in a directory, respectively.

[Appendix 7]
A method of storing mail data by a network storage system having a storage area configured to store mail data of a mailing list address and one or more mail addresses included in the mailing list.
Network storage system
When receiving a mail recording command using a mailing list from a mail server, the process of storing the mail data using the mailing list in the storage area of the mailing list address, and
When the mail server receives an order to record the mail to the mail address included in the mailing list, the notified mail data is stored in the storage area of the mail address.
With
If the file data associated with the mail using the mailing list is included before the mail data is saved in the storage area, the file data is not copied to the storage area of the individual destination included in the mailing list. In addition, the storage of mail data by a storage system is characterized in that mail data is managed by recording a link to the file data recorded in the storage area of the mailing list address to an individual destination instead of the file data. Method.

[Appendix 8]
When the network storage system identifies the mail recording command using the mailing list from the mail server and the mail recording command to the mail address included in the mailing list, the network storage system responds to the mail recording command. , The mail data by the storage system according to the appendix 7, which stores the link information to the mail data using the mailing list stored in the storage area of the mailing list address without storing the notified mail data. Storage method.

[Appendix 9]
A processor of a network storage device that provides a storage area to other information processing devices via a network.
The storage area handles the mailing list address and the e-mail data of one or more mail addresses included in the mailing list so that they can be stored, and when a mail recording command using the mailing list is received from the mail server, the mailing list address is used. The mail data using the mailing list is stored in the storage area, and when the mail server receives an order to record the mail to the mail address included in the mailing list, the storage area of the mail address is notified. A means of receiving mail data that stores the received mail data,
If the file data associated with the mail using the mailing list is included before the mail data is stored in the storage area by the mail data receiving means, the storage area of the individual destination included in the mailing list is the said. A program characterized by operating as a record management means for recording a link to the file data recorded in the storage area of the mailing list address to an individual destination instead of copying the file data. ..

[Appendix 10]
The processor
When the mail recording command using the mailing list from the mail server and the mail recording command to the mail address included in the mailing list are identified via the mail data receiving means, the mail recording command is specified. However, it is described in Appendix 9 that it operates so as to store the link information to the mail data using the mailing list stored in the storage area of the mailing list address without storing the notified mail data. Program.

1, 2, 3 Network storage system (storage system)
10 Storage unit (storage area)
11 Mail data reception department (mail data reception means)
12 Records management department (record management means)
13 Anti-virus department (anti-virus measures)

Claims (10)

A network storage system that links to a mail server that supports the mailing list function on the network.
A storage area in which e-mail data of a mailing list address and one or more e-mail addresses included in the mailing list (hereinafter, e-mail is abbreviated as e-mail) can be stored in relation to transmission and reception , respectively. A storage area that can store file data associated with emails by associating them with each email, and
When a write request for mail data of a mail using a mailing list is received from the mail server, the mail data using the mailing list is stored in the storage area reserved for the mailing list address, and the mail is stored. When a write request for the mail data of the mail to each mail address included in the mailing list is received from the server, each mail data is stored in the storage area reserved for each of the corresponding mail addresses. E-mail data reception method and
Each mail data requested to be written by the mail server is stored in the storage area reserved for the mailing list address by the mail data receiving means and the storage area reserved for each of the mail addresses included in the mailing list. Before saving
If the mail using the mailing list contains file data associated with the mail ,
While storing the file data in the storage area reserved for the mailing list address, the file data is not copied to each storage area reserved for each mail address included in the mailing list. ,
A link to the file data recorded in the storage area of the mailing list address is recorded in place of the file data in each storage area reserved for each mail address included in the mailing list .
Records management means and
A network storage system characterized by being equipped with. When the record management means identifies a request for writing the mail using the mailing list from the mail server and a request for writing the mail to the mail address included in the mailing list via the mail data receiving means. The claim is characterized in that, in response to the mail writing request, the link information to the mail data using the mailing list stored in the storage area of the mailing list address is stored without storing the notified mail data. The network storage system according to 1. When the record management means identifies the change processing of an individual user to the file data recorded in the storage area reserved for the mailing list address by the mail data receiving means, the change content is transferred to the user. The network storage system according to claim 1 or 2, wherein the file data is managed as a difference file. In the record management means, when the storage process of the individual user of the file data recorded in the storage area reserved for the mailing list address by the mail data receiving means is identified, the storage destination specified by the corresponding user is set. If it is a storage area managed by the own storage system, a link to the file data recorded in the storage area secured for the mailing list address is placed in the corresponding storage destination, and the file data is not saved. The network storage system according to any one of claims 1 to 3, wherein the network storage system is characterized by the above. The mail received from the mail server is scanned for viruses with reference to the storage area of the mailing list address, and the file is recorded via a link to the file data recorded in the storage area of an individual destination. The network storage system according to any one of claims 1 to 4, further comprising an antivirus unit that does not perform virus scanning of data. The network storage system according to any one of claims 1 to 5, wherein the record management means manages a storage area of a mailing list address and a storage area of each individual mail address in a directory, respectively. .. A storage area that can store mailing list addresses and mail data of one or more mail addresses included in the mailing list in relation to transmission and reception, respectively, and file data associated with each mail is stored in each mail. A method of storing mail data by a network storage system that has a storage area that can be associated and stored .
Network storage system
When a write request for mail data using a mailing list is received from a mail server that supports the mailing list function, the mail data using the mailing list is stored in the storage area reserved for the mailing list address. Processing and
When a write request is received from the mail server regarding the mail data of the mail to each mail address included in the mailing list, each mail data is stored in the storage area reserved for each of the corresponding mail addresses. And the processing to do
With
Before storing each mail data requested to be written by the mail server in the storage area reserved for the mailing list address and the storage area reserved for each of the mail addresses included in the mailing list .
If the mail using the mailing list contains file data associated with the mail ,
While storing the file data in the storage area reserved for the mailing list address, the file data is not copied to each storage area reserved for each mail address included in the mailing list. ,
To execute the process of recording the link to the file data recorded in the storage area of the mailing list address in place of the file data in each storage area reserved for each e-mail address included in the mailing list. A method of storing mail data by a storage system, which is characterized by managing mail data in the storage area. When the network storage system identifies a request for writing the mail using the mailing list from the mail server and a request for writing the mail to the mail address included in the mailing list, the network storage system responds to the request for writing the mail. The mail data by the storage system according to claim 7, wherein the link information to the mail data using the mailing list stored in the storage area of the mailing list address is stored without storing the notified mail data. How to store. A device included in a network storage system that provides a storage area to other information processing devices via a network, and is a processor of a network storage device that links with a mail server that supports the mailing list function on the network.
The storage area handles mail data of a mailing list address and one or more mail addresses included in the mailing list in relation to transmission and reception, respectively , and a file associated with each mail for the storage area. The mailing list is stored in the storage area reserved for the mailing list address when a write request is received for the mail data of the mail using the mailing list from the mail server. When receiving a request from the mail server to write the mail data of the mail to each mail address included in the mailing list, the mail data is stored for each of the corresponding mail addresses. A mail data receiving means that stores each mail data in the existing storage area,
Each mail data requested to be written by the mail server is stored in the storage area reserved for the mailing list address by the mail data receiving means and the storage area reserved for each of the mail addresses included in the mailing list. Before saving
If the mail using the mailing list contains file data associated with the mail ,
While storing the file data in the storage area reserved for the mailing list address, the file data is not copied to each storage area reserved for each mail address included in the mailing list. ,
A link to the file data recorded in the storage area of the mailing list address is recorded in place of the file data in each storage area reserved for each mail address included in the mailing list .
Records management means,
A program characterized by operating as. The processor
When the request for writing the mail using the mailing list from the mail server and the request for writing the mail to the mail address included in the mailing list are identified via the mail data receiving means, the request for writing the mail is made. The ninth aspect of the present invention is to operate so as to store the link information to the mail data using the mailing list stored in the storage area of the mailing list address without storing the notified mail data. The described program.

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