JP2005258668A - Method for storing data in electronic computer system and electronic computer system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a server that enables the stable storage of data and can be extremely quickly restored to a normal state in the event of a failure. <P>SOLUTION: An electronic computer system includes an HDD-A2 directly connected to a motherboard 5, and an HDD-B3 and an HDD-C4 which form a RAID-1 structure via a RAID board. Fixed data stored in the HDD-A are backed up into the system backup area of the HDD-B by means of a general-purpose backup tool at predetermined timing. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a data storage method for an electronic computer system and an electronic computer system. Specifically, a computer that can restore fixed data to a normal state in a very short time even if a problem occurs by backing up fixed data at a predetermined timing and copying fluctuation data in real time. The present invention relates to a system data storage method and an electronic computer system.

  In a computer network, a server that provides its own functions and data to client computers is a key part of the network, and a server OS (Operating System) and server application software collectively manage information of the entire network. Data and information held by the server are very important assets for operating the network and performing business processing.

  As described above, in order to protect the property of a very important server, a normal server has a server-specific structure called a raid structure in which a plurality of hard disk drives (hereinafter referred to as HDDs) are collectively managed as one hard disk drive. (For example, refer nonpatent literature 1).

Hereinafter, typical raid-1 and raid-5 structures of the raid structure will be described.
For example, as shown in FIG. 3A, the RAID-1 structure is a method in which exactly the same data is simultaneously written to the first HDD 102 and the second HDD 103 connected via the RAID board 101. Is recorded with a mixture of OS, application software, data, etc., and when some data is recorded, changed or deleted in one HDD (for example, the first HDD), the other HDD (for example, the second HDD) is recorded. (HDD) data is also recorded, changed or deleted. In the RAID-1 structure, even if one HDD is damaged, data can be read from the other HDD, so that the system can continue to operate without any problem.

  In addition, the RAID-5 structure, for example, as shown in FIG. 3 (b), connects the first HDD 102, the second HDD 103, and the third HDD 104 via the RAID board 101, thereby providing a virtual large capacity drive. 105, and the OS, application software, data, etc. are recorded, such as the first HDD and the second HDD, the first HDD and the third HDD, or the second HDD and the third HDD. The same content is written to a plurality of HDDs. When one of the HDDs (for example, the second HDD) crashes (cannot be read / written due to damage or the like) and the HDD is replaced, another HDD (for example, , The data lost from the first HDD and the third HDD) is automatically recovered.

"IT Glossary of Terms e-Words", [online], [March 4, 2004 search], Internet <URL: http://e-words.jp/p/c-storage-magnetic-hd-raid. html>

  However, the above-described raid structure is a technique devised on the assumption that the HDD is replaced with a normal HDD when the HDD crashes, and is not a structure devised on the assumption that the data stored in the HDD is backed up ( For example, since the above-described Raid-1 structure simultaneously writes exactly the same data to two HDDs, one HDD system is affected by a virus or the like, and at the same time the other HDD system is also affected by a virus. In other words, the normal state of one HDD is not held in the other HDD, and the above-described Raid-5 structure is configured to write data in a distributed manner. , Backup is not done.) Data backup is not done on tape or backup dedicated server. It relies on the media.

  Moreover, even if the RAID-1 structure and the RAID-5 structure are adopted, a general server is a very unstable system environment in which a system and data are mixed.

  The present invention was devised in view of the above points, and enables stable data storage and can restore a normal state in a very short time even when a malfunction occurs. It is an object of the present invention to provide a data storage method for an electronic computer system and an electronic computer system.

  In order to achieve the above object, a data storage method for an electronic computer system according to the present invention is divided into a first storage device in which fixed data is stored and two or more areas, and variable data is divided into one area. A data storage method for an electronic computer system comprising: a second storage device in which is stored; and a third storage device configured to always store data similar to the second storage device, Storing the fixed data stored in the first storage device at another timing in another area of the second storage device.

  Here, fixed data stored in the first storage device at a predetermined timing, that is, data whose contents are not changed every time the electronic computer system is used is divided into two or more areas, and one area Are stored in the first storage device by storing them in another area of the second storage device in which the fluctuation data, that is, the data whose contents are changed each time the electronic computer system is used is stored. Fixed data backups can be taken in other areas of the second storage device. In addition, by performing backup at a predetermined timing, that is, not performing real-time backup, fixed data in a state before various problems occur can be stored as backup data.

  In addition, since the third storage device is configured to always store the same data as the second storage device, the variation data stored in one area of the second storage device and the second storage device The backup data of fixed data stored in another area of the storage device can be duplicated. In addition, since the third storage device always replicates the second storage device, that is, in order to save the replicated data in real time, the replicated data having the latest data content created by the user can be stored. .

  Further, the data storage method of the electronic computer system according to the present invention includes a first storage device storing first fixed data including user account information, and a user stored in the first storage device. The second storage device storing the second fixed data including the account information common to the first account information and the second variable data is divided into two or more areas, and the first variation data is stored in one area. 3 storage devices, a fourth storage device that is divided into two or more regions and stores the second variation data in one region, and always stores the same data as the third storage device A data storage method for an electronic computer system comprising a fifth storage device configured and a sixth storage device configured to always store data similar to that of the fourth storage device, wherein the first predetermined At the timing of the first Storing the first fixed data stored in the device in another area of the third storage device; and the second fixed data stored in the second storage device at a second predetermined timing. Storing fixed data in another area of the fourth storage device.

  Here, the first fixed data stored in the first storage device at the first predetermined timing is divided into two or more areas, and the first variation data is stored in one area. By storing in the other area of the third storage device, the backup of the first fixed data stored in the first storage device can be taken in the other area of the third storage device. Further, the second fixed data stored in the second storage device at the second predetermined timing is divided into two or more areas, and the second variation data is stored in one area. By storing in the other area of the storage device, the backup of the second fixed data stored in the second storage device can be taken in the other area of the fourth storage device. Since real-time backup is not performed as described above, the first fixed data and the second fixed data in a state before various problems occur can be stored as backup data.

  Further, since the fifth storage device is always configured to store the same data as the third storage device, the first variation data stored in one area of the third storage device and The backup data of the first fixed data stored in another area of the third storage device can be duplicated. Further, since the sixth storage device is always configured to store the same data as the fourth storage device, the second variation data stored in one area of the fourth storage device and The backup data of the second fixed data stored in another area of the fourth storage device can be duplicated. Note that by storing the replicated data in real time as described above, the replicated data having the latest data content created by the user can be stored.

  Further, since the account information common to the user account information stored in the first storage device is stored in the second storage device, one of the first storage device and the second storage device is stored. Even if a crash occurs, the user can log in to the electronic computer system.

  In order to achieve the above object, an electronic computer system according to the present invention is divided into a first storage device in which fixed data is stored and two or more areas, and variable data is stored in one area. A second storage device, and a third storage device configured to always store the same data as the second storage device, the computer system comprising: The other area is formed so as to store fixed data stored in the first storage device at a predetermined timing.

  In addition, an electronic computer system according to the present invention includes a first storage device in which fixed data is stored, and a second storage device that is divided into two or more areas and in which variation data is stored in one area. An electronic computer system including a third storage device configured to always store data similar to that of the second storage device, the fixed storage being stored in the first storage device at a predetermined timing Storage means for storing data in another area of the second storage device is provided.

  Here, the other area of the second storage device is formed to store the fixed data stored in the first storage device at a predetermined timing, and the first area at the predetermined timing. The fixed data stored in the storage device is stored in another area of the second storage device, and the fixed data stored in the first storage device is backed up by another storage device in the second storage device. Can be taken to the area.

  In addition, an electronic computer system according to the present invention includes a first storage device storing first fixed data including user account information, and user account information stored in the first storage device. A second storage device that stores second fixed data including common account information, and a third storage device that is divided into two or more areas and stores the first variation data in one area And a fourth storage device that is divided into two or more areas and stores the second variation data in one area, and is configured to always store data similar to the third storage apparatus. 5 and a sixth storage device configured to always store the same data as the fourth storage device, and the other areas of the third storage device are: The first description is performed at a first predetermined timing. It is formed to store the first fixed data stored in the device, and the other area of the fourth storage device is stored in the second storage device at a second predetermined timing. 2 fixed data is stored.

  In addition, an electronic computer system according to the present invention includes a first storage device storing first fixed data including user account information, and user account information stored in the first storage device. A second storage device that stores second fixed data including common account information, and a third storage device that is divided into two or more areas and stores the first variation data in one area And a fourth storage device that is divided into two or more areas and stores the second variation data in one area, and is configured to always store data similar to the third storage apparatus. And a sixth storage device configured to always store data similar to that of the fourth storage device, the first storage at a first predetermined timing. First fix stored in the device First storage means for storing data in another area of the third storage device, and second fixed data stored in the second storage device at a second predetermined timing, Second storage means for storing in another area of the fourth storage device is provided.

  Here, the other area of the third storage device is formed to store the first fixed data stored in the first storage device at the first predetermined timing. Backup of the first fixed data by the first storage means for storing the first fixed data stored in the first storage device at another predetermined timing in another area of the third storage device. It can be taken in other areas of the third storage device. Further, the other area of the fourth storage device is formed so as to store the second fixed data stored in the second storage device at the second predetermined timing. The second fixed data stored in the second storage device at a predetermined timing is stored in another area of the fourth storage device by the second storage means, and the second fixed data is backed up to the fourth time. Can be taken to other areas of the storage device.

  In the electronic computer system data storage method and electronic computer system of the present invention described above, the entire system environment (OS, installation information, account information, peripheral device and network information, application setting information, etc.) is regularly stored in another storage device. Since the backup is performed, the system environment can be recovered in a very short time even when a crash or a storage device is damaged.

  In addition, the “reinstallation work” that is generally performed to restore the system is not required, and a high-level system engineer is not required to be resident.

  In addition, the data that is most important to the user is stored in a storage device that is separate from the system, and a duplicate is automatically generated in another storage device. Even if one storage device crashes, continuous system operation can be realized by using data stored in the other storage device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings to facilitate understanding of the present invention.
FIG. 1 is a schematic diagram for explaining an example of an electronic computer system to which the present invention is applied. An electronic computer system 1 composed of a single server shown here includes three built-in HDDs indicated by reference numerals 2 to 4. (HDD-A, HDD-B, HDD-C) are attached. The HDD-A is directly connected to the mother board 5, and the HDD-B and HDD-C are configured to be mirrored by a RAID-1 structure via the RAID board 6.

  A server OS and application software are installed in the system area (A) of the HDD-A. The HDD-B is partitioned into a data and cache area (B-1) and a system backup area (B-2), and the data and cache area (B-1) is installed in the system area. Save application software data.

  In addition, the server OS and application software installed in the system area are set to be backed up to the system backup area (B-2) of the HDD-B at a fixed time by a general-purpose backup tool.

  Here, in the present embodiment, the explanation is given by taking a server with three built-in HDDs as an example, but the HDD-C is set to store the same contents as the HDD-B. Need only be built in the server. That is, the HDD-B and the HDD-C may be connected via a network, and the same content as the HDD-B may be stored in the HDD-C via the network.

  In the present embodiment, the HDD-B and the HDD-C have been described with an example in which mirroring is performed with a RAID-1 structure via a RAID board. However, the same contents as the HDD-B are described. It is sufficient if it is configured so that it can be stored in the HDD-C, and it is not always necessary to adopt the RAID-1 structure, and real-time backup may be performed using a general-purpose backup tool.

  In an example of an electronic computer system to which the present invention is applied, because the system area of HDD-A is backed up at a scheduled time, even if the system area of HDD-A enters a crash state, HDD-B The system area can be restored in a short time from the normal system image file before the crash state stored in the system backup area (B-2), server OS and application software reinstallation, network settings, etc. There is no need to make various settings.

  Data is stored in the HDD-B data and cache area (B-1), and the server OS and application software are stored in the HDD-A system area (A). Since the data stored in the server is stored separately from the server OS and application software, the data is not damaged by the server OS crash or virus infection.

  Further, since the HDD-B storing the data generates the HDD-C which is a duplicate HDD by mirroring, even if the HDD-B is physically damaged, various data are not affected. .

  FIG. 2 is a schematic diagram for explaining another example of an electronic computer system to which the present invention is applied. An electronic computer system 7 composed of two servers shown here is connected via a network 8. 1 server 9 and second server 10.

  The above-described first server has three built-in HDDs (HDD-D, HDD-E, and HDD-F) indicated by reference numerals 11 to 13, and each HDD is directly connected to the motherboard. Further, the above-described second server has three built-in HDDs (HDD-G, HDD-H, HDD-I) indicated by reference numerals 14 to 16, and each HDD is directly connected to the motherboard.

  A server OS is installed in the system area (D) of the HDD-D of the first server, and this server OS is set as a “primary domain controller (PDC)”.

  Further, a server OS is installed in the system area (G) of the HDD-G of the second server described above, and this server OS is set as a “backup domain controller (BDC)”.

  Here, the PDC is a logon management, printer sharing management, and file sharing server, and the BDC installs server applications such as groupware and a business database. Note that the account information for logging in to the network is automatically copied between the PDC and the BDC by the function of the server OS itself.

  The HDD-E of the first server is partitioned into a data and cache area (E-1) and a system backup area (E-2). The data and cache area (E-1) includes an HDD. -Save the data of the installed application software in the system area (D) of D.

  Similarly, the HDD-H of the second server described above is partitioned into a data and cache area (H-1) and a system backup area (H-2), and the data and cache area (H-1) includes Data of application software installed in the system area (G) of the HDD-G is stored.

  In addition, the server OS and application software installed in the HDD-D system area (D) of the first server can be changed to the HDD-E system backup area (E-2) by a general-purpose backup tool. It is set to be backed up.

  Similarly, the server OS and application software installed in the system area (G) of the HDD-G of the second server can be changed on a regular basis by a general-purpose backup tool. The system backup area (H-2) of the HDD-H Is set to be backed up.

  Further, the HDD-E of the first server is configured to automatically copy the entire server to the HDD-I of the second server via the network, and similarly, the HDD of the second server. -H is configured to automatically copy the whole to the HDD-F of the first server via the network in real time.

In another example of an electronic computer system to which the present invention is applied, account information for logging in to the network is automatically copied between the PDC and the BDC, so even if the PDC has a system crash, The client PC can log in to the network and can use shared resources such as a printer. Further, the PDC system itself can be restored in a short time from the latest system image stored in the HDD-E. Furthermore, while restoring the PDC system, the client can proceed with the business using the data copied to the BDC.
These are the same even when the BDC crashes.

  Further, even if data in either the PDC or BDC and the cache area have crashed, they can be restored from a copy stored in a server that has not crashed.

  Furthermore, an electronic computer system can be constructed using a normal HDD supplied for a client PC, and a server can be constructed at an extremely low cost. That is, a RAID board for duplicating the HDD is not required, and an extremely expensive RAID board is not used, so that a server can be constructed at a low cost.

It is a schematic diagram for demonstrating an example of the electronic computer system to which this invention is applied. It is a schematic diagram for demonstrating another example of the electronic computer system to which this invention is applied. It is a schematic diagram for demonstrating a raid structure.

Explanation of symbols

1 Computer system 2 HDD-A
3 HDD-B
4 HDD-C
5 Motherboard 6 Raid Board 7 Computer System 8 Network 9 First Server 10 Second Server 11 HDD-D
12 HDD-E
13 HDD-F
14 HDD-G
15 HDD-H
16 HDD-I

Claims (6)

A first storage device in which fixed data is stored;
A second storage device that is divided into two or more areas and in which the variation data is stored in one area;
A data storage method for an electronic computer system comprising a third storage device configured to always store the same data as the second storage device,
A method of storing data in an electronic computer system, comprising: storing fixed data stored in the first storage device at a predetermined timing in another area of the second storage device. A first storage device storing first fixed data including user account information;
A second storage device in which second fixed data including account information common to the user account information stored in the first storage device is stored;
A third storage device that is divided into two or more areas and in which the first variation data is stored in one area;
A fourth storage device that is divided into two or more areas and in which the second variation data is stored in one area;
A fifth storage device configured to always store data similar to the third storage device;
A data storage method for an electronic computer system comprising a sixth storage device configured to always store data similar to that of the fourth storage device,
Storing the first fixed data stored in the first storage device at a first predetermined timing in another area of the third storage device;
A step of storing the second fixed data stored in the second storage device at a second predetermined timing in another area of the fourth storage device. Data storage method. A first storage device in which fixed data is stored;
A second storage device that is divided into two or more areas and in which the variation data is stored in one area;
An electronic computer system comprising a third storage device configured to always store data similar to the second storage device,
The other area of the second storage device is formed so as to store fixed data stored in the first storage device at a predetermined timing. A first storage device storing first fixed data including user account information;
A second storage device in which second fixed data including account information common to the user account information stored in the first storage device is stored;
A third storage device that is divided into two or more areas and in which the first variation data is stored in one area;
A fourth storage device that is divided into two or more areas and in which the second variation data is stored in one area;
A fifth storage device configured to always store data similar to the third storage device;
An electronic computer system comprising a sixth storage device configured to always store data similar to the fourth storage device,
The other area of the third storage device is formed to store the first fixed data stored in the first storage device at a first predetermined timing,
The other area of the fourth storage device is formed to store the second fixed data stored in the second storage device at a second predetermined timing. system. A first storage device in which fixed data is stored;
A second storage device that is divided into two or more areas and in which the variation data is stored in one area;
An electronic computer system comprising a third storage device configured to always store data similar to the second storage device,
An electronic computer system comprising storage means for storing fixed data stored in the first storage device at a predetermined timing in another area of the second storage device. A first storage device storing first fixed data including user account information;
A second storage device in which second fixed data including account information common to the user account information stored in the first storage device is stored;
A third storage device that is divided into two or more areas and in which the first variation data is stored in one area;
A fourth storage device that is divided into two or more areas and in which the second variation data is stored in one area;
A fifth storage device configured to always store data similar to the third storage device;
An electronic computer system comprising a sixth storage device configured to always store data similar to the fourth storage device,
First storage means for storing first fixed data stored in the first storage device at a first predetermined timing in another area of the third storage device;
A second storage unit configured to store the second fixed data stored in the second storage device at a second predetermined timing in another area of the fourth storage device; Electronic computer system.

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