JP2006079389A - Data backup control device and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To determine a highly reliable data processing device as a backup destination from among a plurality of data processing devices connected via a network. <P>SOLUTION: A data processing device 1 being a backup source accesses a plurality of other data processing devices 1 to acquire reliability levels of each data processing device 1 at that time, and determines a data processing device 1 having high reliability as a backup destination by comparing each reliability level. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a data backup control device and a program that select any one of a plurality of data processing devices connected via a network as a backup destination.

Generally, a data processing device such as a personal computer saves the data stored in an external storage device such as a disk from other external storage devices, CD-ROMs, flexible disks, etc. in order to protect the data from failure. Although data is backed up, there is a problem in workability and operation management. Therefore, conventionally, in a server / client system, a backup control unit is provided on the server and the client side computer, and the disk on each client side is not available. There is a file backup processing method that selects a computer that has unused space required to store the data file to be backed up as the backup destination, and transfers the data file to the backup destination. Known (special References 1).
Japanese Patent Laid-Open No. 7-253917

  However, in the backup processing method of Patent Document 1 described above, the unused area of the disk can be used effectively, and workability and operation management are facilitated, but the data file to be backed up is stored. However, it was only possible to select a computer having an unused area necessary for backup as a backup destination, and it did not guarantee the reliability and efficiency of data backup.

  An object of the first invention is to select a highly reliable data processing device as a backup destination when any one of a plurality of data processing devices connected via a network is determined as a backup destination. To be able to decide.

  An object of the second invention is to determine a data processing device having a high processing capacity as a backup destination when any one of a plurality of data processing devices connected via a network is determined as a backup destination. To be able to decide.

  According to a third aspect of the present invention, when any one of a plurality of data processing devices connected via a network is determined as a backup destination, among reliability, processing capability, and memory free space The backup destination can be determined based on at least one of them.

  According to a fourth aspect of the present invention, when any one of a plurality of data processing devices connected via a network is determined as a backup destination, the installation location of the data processing device that is the backup source is determined. This is to make it possible to determine a data processing apparatus that is geographically distant as a backup destination.

The invention according to claim 1 (first invention) is a data backup control device that selects any one of a plurality of data processing devices connected via a network as a backup destination, When backing up data, an acquisition unit that acquires information on reliability of each data processing device at that time by accessing a plurality of data processing devices is compared with information on each reliability acquired by the acquisition unit And determining means for determining a highly reliable data processing apparatus as a backup destination.
Furthermore, a program for realizing the main functions shown in the invention described in claim 1 is provided to the computer (the invention described in claim 9).
The “backup control device” may be a server device constituting a server / client type system or each data processing device constituting a peer-to-peer type system (hereinafter the same).

The information on the reliability of the data processing device may be information indicating at least one of the information on the uninterruptible power supply, the disk array, the disk failure history, and the system down history (claim 2). Invention).
The determining means may preferentially determine a backup destination having a record of storing the same data in the past by referring to the backup history (the invention according to claim 6).

The invention according to claim 3 (second invention) is a data backup control device that selects any one of a plurality of data processing devices connected via a network as a backup destination, When backing up data, an acquisition unit that acquires information on the processing capability of each data processing device at that time by accessing a plurality of data processing devices is compared with information on each processing capability acquired by the acquisition unit. And a determining means for determining a data processing apparatus having a high processing capacity as a backup destination.
Furthermore, a program for realizing the main functions shown in the invention described in claim 3 is provided to the computer (the invention described in claim 10).

The information on the processing capacity of the data processing device may be information including at least one of the current operation status and communication status of the data processing device (the invention according to claim 4). The operating status may indicate an operating status such as standby, processing operation, or mass processing, and the communication status may be the degree of congestion of the communication line.
The determining means may preferentially determine a backup destination having a record of storing the same data in the past by referring to the backup history (the invention according to claim 6).

The invention according to claim 5 (third invention) is a data backup control device that selects any one of a plurality of data processing devices connected via a network as a backup destination, When backing up data, by accessing multiple data processing devices, the backup destination is determined based on information on the reliability of each data processing device, information on processing capacity, and information on free memory capacity at that time In addition, as a determination factor, a selection unit that selects at least one of reliability, processing capability, and free space, and when reliability is selected by the selection unit, each acquired from each data processing device By comparing reliability information, a highly reliable data processing device can be used as a backup destination. When a processing capacity is selected, a data processing apparatus having a high processing capacity is determined as a backup destination by comparing information on each processing capacity acquired from each data processing apparatus, and a free capacity is selected. And determining means for determining a data processing device having a large free space as a backup destination by comparing information regarding the free space of each memory acquired from each data processing device. On the other hand, a program for realizing the main functions shown in the invention described in claim 5 is provided (the invention described in claim 11).

  The determining means may preferentially determine a backup destination having a record of storing the same data in the past by referring to the backup history (the invention according to claim 6).

The invention according to claim 7 (fourth invention) is a data backup control device that selects any one of a plurality of data processing devices connected via a network as a backup destination, By comparing the installation location storage means for storing and managing information relating to the installation location of each data processing device, the installation location of the data processing device that is the backup source for backing up the data, and the installation location of each other data processing device And determining means for determining another data processing apparatus geographically separated from the backup source as a backup destination.
Further, a program for realizing the main functions shown in the above-described invention according to claim 7 is provided to the computer (the invention according to claim 12).

  The information regarding the installation location of the data processing device may be information indicating at least one of information regarding a telephone number, an address, and a postal code (the invention according to claim 8).

  According to the invention described in claim 1 (first invention), when data is backed up, by accessing a plurality of data processing devices, information on the reliability of each data processing device at that time is obtained, Since the data processing device with high reliability is determined as the backup destination by comparing the information on each reliability, the data processing device with a low risk of causing a failure is selected as the backup destination from the plurality of data processing devices. In addition to improving the reliability at the time of backup, it is also possible to improve the reliability at the time of recovery after a failure occurs at the backup source.

  In this case, the information on the reliability of the data processing device indicates at least one of the information on the uninterruptible power supply, the disk array, the operation rate, the disk failure history, and the system down history (claim 2). For example, the backup destination can be determined by referring to the presence / absence of an uninterruptible power supply, presence / absence of a disk array, disk failure history, and system down history. The uninterruptible power supply (UPS) may be a UPS that switches to battery output in the event of an input power failure. However, in order to improve reliability, the battery output may always be AC-converted and supplied. When performing disk mirroring in which the same data is written to a plurality of disks, the array may perform parity encoding on the data and write the data to the plurality of disks. Further, the backup destination may be determined according to the presence / absence of the disk failure history and system down history, the degree of failure, and the frequency.

  When determining a highly reliable data processing device 1 as a backup destination, if there are a plurality of highly reliable data processing devices 1, the past record of the same data can be obtained by referring to the backup history. Since the backup destination is determined with priority (the invention according to claim 6), the backup destination that has been successfully backed up and returned to normal before can be determined with priority (hereinafter referred to as the backup destination). The same).

  According to the invention described in claim 3 (second invention), when backing up data, by accessing a plurality of data processing devices, information on the processing capability of each data processing device at that time is acquired, Since data processing devices with high processing power are determined as backup destinations by comparing information on each processing capacity, the processing time during data backup is shortened, and when a failure occurs at the backup source The processing time can be shortened.

  In this case, since the information includes at least one of the operation status and communication status of the data processing apparatus at the present time (the invention according to claim 4), for example, a busy state indicating that a large amount of processing is being performed, a busy communication line, etc. The backup destination can be determined in consideration of the condition.

  According to the invention described in claim 5 (third invention), the backup destination is determined based on the information on the reliability of each data processing device at the time of data backup, the information on the processing capacity, and the information on the free capacity of the memory. When the reliability is selected from among reliability, processing capability, and free capacity, the reliability information is compared by comparing information about each reliability acquired from each data processing device. When a high data processing device is determined as a backup destination and processing capacity is selected, a data processing device with a high processing capacity is determined as a backup destination by comparing information on each processing capability acquired from each data processing device If the free space is selected, the information about the free space of each memory acquired from each data processing device is displayed. It is so arranged to determine the more data processing apparatus of free space as the backup destination by compare, it is possible to determine the best backup destination in consideration of system conditions of the moment. In this case, an element for determining the backup destination can be arbitrarily selected by a user operation, or may be automatically selected according to the current system status.

  According to the seventh aspect of the present invention (fourth invention), in a state where information relating to the location of each data processing device is stored and managed, the location of the data processing device that is the backup source for backing up the data The other data processing devices that are geographically distant from the backup source are determined as the backup destination by comparing with the installation location of each of the data processing devices, for example, even if an earthquake occurs Data processing devices installed in areas that are not easily affected by disasters, such as areas that are not affected and areas with different power conditions, can be determined as backup destinations, and safety can be increased.

  In this case, since the information regarding the installation location of the data processing apparatus is information indicating at least one of the information regarding the telephone number, the address, and the postal code (the invention according to claim 8), the information regarding the installation location is the telephone. If it is a number, for example, the upper two digits of the administrator telephone number of the backup source and the administrator telephone number of the backup destination are compared, and geographically separated on condition that the value is “2” or more If it is an address, it can be determined that it is geographically separated (not easily subject to simultaneous disasters) according to the prefecture name.

Example 1
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a block diagram showing an overview of the overall configuration of the private communication system in this embodiment.
This on-site communication system is a peer-to-peer system in which a plurality of data processing devices 1 are connected via a network 2. For example, an intranet / extra network using an HTTP protocol using a TCP / IP communication protocol is used. Configure the net. This on-site communication system uses CIFS (Common Internet File System), which is a shared Internet file system, as a communication protocol, and in a state in which the disk DK on each data processing device 1 side is open for sharing on the network, When each data processing device 1 backs up an arbitrary data file 3 to be backed up, the other data processing devices 1 are accessed by broadcast (broadcast), so that each data processing device 1 at that point in time is accessed. Information on reliability, information on processing capacity, and information on free capacity of the disk DK is collected and acquired, and the data processing apparatus 1 with high reliability, the data processing apparatus 1 with high processing capacity, or the data processing apparatus 1 with sufficient free capacity is obtained. The backup destination is determined and the backup destination The data file 3 to be backed up is transmitted to the data processing apparatus 1. Here, the above-described three types of methods for determining the backup destination are prepared, and the user can arbitrarily select one of them.

FIG. 2 is a diagram for explaining the relationship between the method for determining the backup destination and the flag value associated therewith.
In this case, as described above, the method of determining the backup destination by giving priority to the information on the reliability of each data processing device 1 at the time of backup (reliability priority), and the processing capability of each data processing device 1 at the time of backup. A method of prioritizing information to determine a backup destination (priority of processing capacity), a method of prioritizing information on the free capacity of the disk DK of each data processing device 1 at the time of backup (priority of free capacity), And flag values for identifying “reliability priority”, “processing capacity priority”, and “free space priority” are associated with each determination method. When the user selects and designates an arbitrary method from the three types, a flag “FLAG” having a value corresponding to the method is set.

FIG. 3 is a diagram showing the contents of the history file 4 that is set to be transmitted to the backup destination side when the backup data processing device 1 backs up data to another data processing device 1.
The history file 4 has items “TIME”, “S-ADR”, and “DKID”, where “TIME” indicates the date and time when the backup was executed, and “S-ADR” is self ( “DKID” indicates an identifier for identifying the disk area in the backup source where the data file 3 to be backed up is stored. The computer name is a NETBIOS (Net Work Basic Input Output System) computer name.

FIG. 4 is a diagram showing backup response information 5 that is returned by the data processing apparatus 1 that has received a backup request from any of the data processing apparatuses 1 in response to the request.
The backup response information 5 includes items “ADR”, “QUALITY”, “CAPACITY”, “POWER”, “S-ADR”, and “DKID”. “ADR” is the name of the NETBIOS computer, “QUALITY” indicates the level of reliability, “CAPACITY” indicates the level of free capacity, “POWER” indicates the level of processing capability, and “ “S-ADR” and “DKID” are the backup source computer name and the backup source disk area identifier as described above. The backup response information 5 is stored in the “MACHINE-INFO” area. Hereinafter, the backup response information 5 and “MACHINE-INFO” may be referred to synonymously.

FIG. 5 is a diagram for explaining the reliability level “QUALITY” in the backup response information 5.
The reliability level “QUALITY” is divided into four stages as shown in the figure, and level (1) is a case where an uninterruptible power supply (UPS) is installed or a disk array is installed. The UPS may be switched to a battery output in the event of an input power failure, but the battery output may always be AC-converted and supplied in order to increase reliability. When performing disk mirroring to write data to a plurality of disks, the data may be parity encoded and written to the plurality of disks. Level (2) indicates a normal level. For example, neither UPS nor disk array is installed, but the operating rate is good. Level (3) indicates a case where there is a disk failure history, and level (4) indicates a case where there is a system down history. The level may be divided according to the disk failure history, the system down history, and the frequency.

FIG. 6 is a diagram for explaining the free capacity level “CAPACITY” in the backup response information 5.
The free capacity level “CAPACITY” is divided into four stages as shown in the figure, and level (1) is a case where 100% or more free space exists for the data capacity required for backup. Level (2) has a level of 50% or more with respect to the required backup capacity, level (3) has a level of 10% or more with respect to the required backup capacity ( 4) is a case where the capacity is insufficient with respect to the required backup capacity.

FIG. 7 is a diagram for explaining the processing capability level “POWER” in the backup response information 5.
The processing power level “POWER” is divided into four stages as shown in the figure. Level (1) is waiting for input, level (2) is during processing operation, level (3) is during mass processing, level (4) is a busy state in which a new request cannot be answered. The processing capability level “POWER” may be divided into levels according to the degree of complication of the communication line.

FIG. 8 is a block diagram showing basic components of each data processing apparatus 1.
The CPU 11 is a central processing unit that controls the overall operation of each data processing device 1 in accordance with the operating system in the ROM 12 and various application software. The ROM 12 has a program area and a data area, and a program for realizing the present embodiment is stored in this program area in accordance with operation procedures shown in FIGS. The RAM 13 has a program execution area and a work area. The external storage device 14 is a magnetic memory, an optical memory, a semiconductor memory, or the like, and the auxiliary storage device 15 is a removable storage medium such as a flexible disk, a CD-ROM, or a DVD.

  On the other hand, an input device 16, a display device 17, and a communication I / F (interface) 18, which are input / output peripheral devices, are connected to the CPU 11 via a bus line. Controls the operation of the I / O device. The input device 16 is an operation unit that constitutes a pointing device such as a keyboard, a touch panel or a mouse, and a touch input pen, and inputs character string data and various commands. The display device 17 is a liquid crystal display device that performs full color display, a CRT display device, a plasma display device, or the like. The communication I / F 18 is a wired / wireless interface that performs data communication with a partner via a network, such as a modem or a terminal adapter.

  Next, the operation concept of each data processing apparatus 1 in the first embodiment will be described with reference to the flowcharts shown in FIGS. Here, each function described in these flowcharts is stored in the form of a readable program code, and operations according to the program code are sequentially executed. Moreover, the operation | movement according to the above-mentioned program code transmitted via the transmission medium can also be performed sequentially. This also applies to other embodiments described later, and in addition to the recording medium, operations specific to this embodiment can be executed using programs / data supplied externally via a transmission medium.

FIG. 9 is a flowchart showing backup control that is started in response to a backup instruction from an operator when a data processing apparatus 1 backs up data to another data processing apparatus 1.
First, when the backup control program is activated in response to a backup instruction from the operator, the CPU 11 displays a message screen for guiding the selection of the disk DK and area to be backed up, and in response to this, When the disk DK to be backed up is selected and specified, and the disk area is selected and specified, the backup source disk area is identified by specifying the number of selected disks and the number of selected areas. An identifier “DKID” is generated (step A1). Then, the selected disk area capacity is calculated to generate a backup size “BSIZE” (step A2). Then, after displaying and outputting a message for prompting selection of the backup destination determination method, when the backup destination determination method is selected and designated in response, the flag value FLAG (see FIG. 2) corresponding to the selection method is set. Specify (step A3). In this state, the CPU 11 performs backup destination determination control (step A4).

FIG. 10 is a flowchart for explaining the backup destination determination control (step A4) shown in FIG. 9 in detail.
Currently, the user can select and specify an arbitrary method from among the three types of methods that have been prepared in advance as a backup destination determination method: "Reliability priority", "Processing capacity priority", and "Free space priority". Assume that the flag “FLAG” of the value to be set is set.
First, the CPU 11 secures a necessary information management area in the RAM 13 as a “MACHINE-INFO” area in order to prepare for collection management of the backup response information 5 from each data processing device 1 (step B1). In this state, after transmitting a backup request packet to all the other data processing devices 1 by broadcast (broadcast) (step B2), in response to this backup request, any data from the data processing device 1 is sent. The system waits until the backup response information 5 is received (step B3).

FIG. 11 is a flowchart showing information collection control in the data processing apparatus 1 on the receiving side.
First, when a backup request packet is received from any of the data processing devices 1 (YES in step C1), the reliability level “QUALITY” at that time is determined (step C2). That is, it is checked whether the UPS is installed, the disk array is installed, the operation rate is good, the disk failure history is present, or the system down history is present, and the corresponding reliability level “QUALITY” is checked. Is determined.

  Next, the free capacity level “CAPACITY” at the time of the backup request is determined (step C3). That is, whether there is 100% or more free space, 50% or more free space, 10% or more free space for the data capacity required for backup, Whether or not the capacity is insufficient is determined, and the corresponding free capacity level “CAPACITY” is determined.

  Further, the processing capability level “POWER” at the time of the backup request is determined (step C4). That is, it is checked whether input is waiting, processing is being performed, a large amount of processing is being performed, or a busy state in which a new request cannot be answered, and a corresponding processing capability level “POWER” is determined. After determining the reliability level “QUALITY”, the free capacity level “CAPACITY”, and the processing capability level “POWER” at the time of the backup request in this way, whether the history file 4 has a backup history corresponding to the backup request source. (Step C5).

  If the corresponding backup history exists, the backup source computer name “S-ADR” is read from the history file 4 (step C6), and the backup source disk area identifier “DKID” is read (step C7). ). In addition to the reliability level “QUALITY”, free capacity level “CAPACITY”, processing capacity level “POWER”, backup source computer name “S-ADR”, backup source disk area identifier “DKID”, etc. Then, based on its own NETBIOS computer name “ADR”, the backup response information 5 is created as data “MACHINE-INFO” for one device, and is transmitted to the data processing device 1 that is the backup request source (step C8).

  Here, when the backup request source data processing device 1 receives the backup response information 5 from any of the data processing devices 1 (YES in step B3 in FIG. 10), the backup response information 5 is stored in the “MACHINE-INFO” area. Is written as data for one unit (step B4). Thereafter, the above-described operation is repeated until it is determined in the next step B5 that there is no received data, that is, until responses are received from all the data processing devices 1 (steps B3 to B5). Here, when the absence of received data is detected in step B5, the above-mentioned flag “FLAG” is referred, and the determination method selected and designated in advance is “reliability priority”, “processing capacity priority”, “ It is checked whether or not “free space priority” (steps B6 and B7).

   If “reliability priority” is selected (YES in step B6), processing for determining a backup destination with priority on reliability is executed (step B8). That is, by accessing each reliability level “QUALITY” in the “MACHINE-INFO” area and comparing them, the data processing device 1 having the highest reliability level is determined as the backup destination. If there are multiple high reliability levels, refer to the backup source computer name “S-ADR” and the backup source disk area identifier “DKID” to prioritize the backup destination that has saved the same data in the past. To make decisions.

  If “free space priority” is selected (YES in step B7), processing for determining a backup destination with priority on free space is executed (step B9). That is, by accessing each free capacity level “CAPACITY” in the “MACHINE-INFO” area and comparing them, the data processing apparatus 1 having the highest free capacity level is determined as the backup destination. If there are multiple high free capacity levels, refer to the backup source computer name “S-ADR” and the backup source disk area identifier “DKID” to prioritize the backup destination that has a record of storing the same data in the past. To make decisions.

  Furthermore, when “processing capacity priority” is selected (NO in step B7), a process of prioritizing processing capacity and determining a backup destination is executed (step B10). That is, by accessing each processing capability level “POWER” in the “MACHINE-INFO” area and comparing them, the data processing device 1 having the highest processing capability level is determined as the backup destination. If there are multiple high processing capability levels, refer to the backup source computer name “S-ADR” and the backup source disk area identifier “DKID” to prioritize the backup destination that has saved the same data in the past. To make decisions.

  When the backup destination determination control is completed in this way, the process proceeds to step A5 in FIG. 9 to check whether or not the backup can be determined. Here, when the backup is determined, the backup source data processing apparatus 1 transmits the backup target file (original data) 3 to the data processing apparatus 1 determined as the backup destination (step A6). Here, the data processing apparatus 1 at the backup destination executes the backup process for receiving the backup target data 3 and writing it to the disk DK. At this time, it returns a response indicating whether the backup process has been executed normally. I have to. The data processing apparatus 1 of the backup source discriminates this reply response, and when this reply response is an affirmative response (OK) (YES in Step A7), the backup date and time (current date and time), the backup source computer name “S− The history file 4 is created based on “ADR” and the backup source disk area identifier “DKID” and transmitted to the data processing apparatus 1 at the backup destination (step A8). In this case, the backup data processing apparatus 1 stores and manages the history file 4 corresponding to the backup target data.

  On the other hand, if the reply response is a negative response for some reason (NO in step A7), it is checked whether the backup target data has been repeatedly transmitted for a predetermined number of retries (step A9). If a negative response is received even after retrying this number of times, the process returns to step A4 of the backup destination determination control described above in order to determine a new backup destination to replace the previous backup destination. In this case, if there are a plurality of the same level at the time of the previous determination, another data processing apparatus 1 is determined as the current backup destination, but if there are not a plurality of the same level, the next higher level is set as the backup destination. Determine as. For example, if the previous level is “level 1”, this time “level 2” is determined as the backup destination, and if the previous time is “level 2”, this time “level 3” is determined as the backup destination. However, in this embodiment, “level 3” is the limit. If the optimum backup destination cannot be determined even after repeating such an operation (NO in step A5), the backup target data is written in its own auxiliary storage device 15 for backup (step A10). ).

  As described above, in the first embodiment, the backup source data processing apparatus 1 obtains the reliability level of each data processing apparatus 1 at that time by accessing the other data processing apparatuses 1. Since the data processing device 1 having a high reliability level is determined as the backup destination by comparing the respective reliability levels, the data processing device 1 having a low risk of failure can be determined as the backup destination. In addition to improving the reliability at the time of backup, it is also possible to improve the reliability at the time of recovery after a failure occurs at the backup source.

  The backup source data processing device 1 obtains the processing capability level of each data processing device 1 at that time by accessing the plurality of data processing devices 1, and compares the processing capability levels to determine the processing capability level. Since the high data processing apparatus 1 is determined as the backup destination, the processing time at the time of data backup is shortened, and the processing time at the time of recovery when a failure occurs at the backup source can be shortened.

  The backup source data processing apparatus 1 determines the reliability, processing capacity, and free capacity when determining the backup destination based on the reliability level, processing capacity level, and free capacity level of each data processing apparatus at the time of data backup. When reliability is selected, the data processing device 1 having a high reliability level is determined as a backup destination by comparing the reliability levels acquired from the data processing devices 1, and the processing capability is selected. In this case, the data processing device 1 having a high processing capability level is determined as a backup destination by comparing the processing capability levels acquired from the respective data processing devices 1. By comparing the free capacity levels acquired from the data processing apparatus 1, the data processing apparatus 1 having a high free capacity level is obtained. Since it is determined as the backup destination, the optimal backup destination can be determined in consideration of the current system status, etc., and either one of reliability, processing capacity, or free capacity can be determined by user operation as necessary Can be arbitrarily selected.

Further, when the data processing apparatus 1 having the highest level is determined as the backup destination, if there are a plurality of the same level, the backup source computer name “S-ADR” and the backup source disk area identifier “DKID” are referred to. In this way, the backup destination with the history of saving the same data in the past is preferentially determined, so the backup destination that has been successfully backed up and returned to normal before can be preferentially determined. Can do.
If a negative response is received even if the backup target data is repeatedly transmitted to the data processing apparatus 1 determined as the backup destination for a predetermined number of retries, a new backup destination that replaces the previous backup destination is determined. Can do.

  In the first embodiment described above, the backup source data processing apparatus 1 receives the items of the reliability level “QUALITY”, the free capacity level “CAPACITY”, and the processing capacity level “POWER” from the other data processing apparatuses 1. "MACHINE-INFO" is collected, but if any of reliability, processing capability, and free space is selected by the user operation, only the selected item data is collected. Also good. In the first embodiment described above, the backup control program is activated in response to the backup instruction from the operator. For example, the backup control program is activated at the timing of the end of business or the scheduled activation. May be.

  In the first embodiment described above, any one of reliability, processing capacity, and free capacity is arbitrarily selected by a user operation. However, automatic selection is made according to the current system status. It is also possible to select and specify any combination of reliability, processing capacity, and free capacity. Furthermore, when determining the backup destination, all of reliability, processing capacity, and free capacity are specified. It may be an element.

In the first embodiment described above, the shared Internet file system (CIFC) is used to publish the disk area of each data processing device 1 on the network at all times. However, other existing file sharing technologies are used. Furthermore, the communication protocol is arbitrary.
In the first embodiment described above, one data processing device 1 is determined as a backup destination. However, a plurality of data processing devices 1 are determined, and the same backup target data is determined as a plurality of data processing devices 1. If it is transmitted to and individually backed up, safety can be further increased.

  On the other hand, a recording medium (for example, a CD-ROM, a flexible disk, a RAM card, etc.) on which program codes for executing the above-described units are recorded may be provided to the computer. That is, a recording medium having a computer-readable program code, and a function of acquiring information on reliability of each data processing device at that time by accessing a plurality of data processing devices when backing up data And a computer-readable recording medium recording a program for realizing a function of determining a currently highly reliable data processing apparatus as a backup destination by comparing the acquired information on each reliability You may do it.

  Also, a recording medium having a computer readable program code, and a function of acquiring information on processing capability of each data processing device at that time by accessing a plurality of data processing devices when backing up data And a computer-readable recording medium storing a program for realizing a function of determining a data processing apparatus having a high processing capacity at this time as a backup destination by comparing acquired information on each processing capacity You may do it.

Further, the recording medium has a computer readable program code, and the backup destination is determined based on the information on the reliability of each data processing device at the time of data backup, the information on the processing capability, and the information on the free capacity of the memory. When determining the reliability, processing capability, and the capacity to select at least one of the free capacity and the reliability obtained from each data processing device when reliability is selected. By comparing the information regarding the processing capability, a highly reliable data processing device is determined as the backup destination, and when the processing capability is selected, the processing capability is compared by comparing the information regarding each processing capability acquired from each data processing device. A data processing device with a high capacity is selected as the backup destination and free space is selected. Can be read by a computer recording a program for realizing a function of determining a data processing device with a large free space as a backup destination by comparing information on the free space of each memory acquired from each data processing device A simple recording medium may be provided.
(Example 2)

A second embodiment of the present invention will be described below with reference to FIGS.
In the first embodiment described above, the backup source data processing apparatus determines the backup destination based on the reliability level / processing capacity level / free capacity level of each data processing apparatus at the time of data backup. However, in this second embodiment, a data processing device that is geographically separated from the installation location of the data processing device that is the backup source is determined as the backup destination.

FIG. 12 is a block diagram showing the overall configuration of the server / client system.
The server / client system is a nationwide wide-area communication system, and includes a server-side data processing device 21 and a plurality of client-side data processing devices 22, for example, an HTTP protocol using a TCP / IP communication protocol. The extranet is configured by, for example. Furthermore, SIP (Session Initiation protocol) used for Internet telephone (IP telephone) or the like is used as a communication protocol. Here, when the client-side data processing device (client device) 22 calls the server-side data processing device (server device) 21 using SIP, the server device 21 calls the communication partner client device 22. To establish communication status. The server device 21 and the client device 22 are provided with a disk DK as in the first embodiment described above.

FIG. 13 is a diagram showing the contents of the backup destination management information 23 stored and managed on the server device 21 side.
This backup destination management information 23 associates the correspondence between the backup source and the backup destination, and includes items of “backup source ID”, “IP phone number”, “administrator phone number”, and “backup destination ID”. Have. The “backup source ID” and “backup destination ID” indicate the correspondence determined at the time of the previous backup, and “0” indicates “undecided”. “Administrator telephone number” is a telephone number on the user side, and the server device 21 estimates the installation location of the client device 22 based on the upper two digits of the area code in the “administrator telephone number”. ing.

  Here, when the server device 21 receives a call from the backup source, the server device 21 specifies the backup source ID from the sender address, and determines the backup destination by referring to the backup destination management information 23 based on the backup source ID. Thus, communication is established by calling the other party based on the “IP telephone number” corresponding to this backup destination. In addition, when determining the backup destination, it is preferable to use an area where the power situation is different, or a remote area which is not damaged at the same time even if an earthquake disaster occurs. In this case, as a result of comparing the backup source and the backup destination administrator telephone number, if the upper two digits of the area code are more than "2", there is a rule that these areas are not adjacent, Based on this rule, data processing devices installed in areas with different power conditions and in remote areas that are not damaged at the same time after an earthquake are determined as backup destinations.

FIG. 14 is a flowchart showing data processing between the server apparatus 21 and the client apparatus 22 on the transmission side (backup source) and the reception side (backup destination).
First, when data is backed up at the time of business end and scheduled start-up, the client device 22 on the transmission side transmits to the server device 21 (step D1). Here, the server device 21 executes processing for selecting the receiving side (backup destination) when receiving a call from any of the client devices 22 in a reception waiting state from the transmitting side (YES in step E1) (step S1). Step E2).

FIG. 15 is a flowchart showing a receiving side (backup destination) selection process.
First, the server device 21 specifies the backup source ID from the sender address, searches for the backup source ID from the backup destination management information 23 (step G1), and also backs up the backup destination ID associated with the backup source ID. Is read and acquired (step G2). Here, based on whether the value of the backup destination ID is “0 (zero)”, it is determined whether the backup destination has not been decided or has been decided (step G3), and the backup destination ID is a numerical value other than “0”. If determined, the process proceeds to step E3 in FIG. 14 in order to set the previously determined backup destination as the current backup destination. If the value is “0”, the backup destination is determined using a hash function. The management information 23 is searched (step G4).

  Thus, when a temporary backup destination is randomly searched, an “administrator telephone number” associated with the backup source ID and an “administrator telephone number” associated with the temporary backup destination ID are read out. As a result of subtracting those area codes (upper two digits) (step G5), it is checked whether the subtraction value (absolute value) is "2" or more (step G6). If it is less than “2”, the process returns to step G4 and the above operation is repeated while searching the backup destination management information 23 again (steps G4 to G6). Now, if it is “2” or more, it can be recognized that the location is sufficiently distant from the backup source, and can be determined as the current backup destination.

  When such a receiving side (backup destination) selection process is completed, the server device 21 reads and acquires the “IP telephone number” associated with the backup destination ID and calls the receiving side (step in FIG. 14). E3). Here, if the receiving side is in a power-on state and is in a communicable state, it is determined in step E4 that the receiving side is OK. If it is in any other state, transmission is not possible in order to notify the transmitting side to that effect. (Step E5). If it is determined that the receiving side is OK, a redirection designation is made by calling the receiving side “IP telephone number” (step E6), and then a transmission enable notification is sent to the transmitting side (step E7).

  On the other hand, on the transmission side, after making a call to the server device 21 (step D1), until a transmission enable notification is received from the server device 21 (step D2), the operation of making a call again at a predetermined time interval is repeated. (Step D3). Here, when a transmission enable notification is received, the backup target data (original data) is transmitted to the backup destination (step D4). On the receiving side, when it is detected that it is a call to itself in the wait state for redirect designation from the server device 21 (step F1), backup processing for receiving the original data from the transmitting side and writing it in the free disk area Is executed (step F2).

  As described above, in the second embodiment, the server device 21 compares the administrator telephone numbers of the backup source client device 22 and each of the other client devices 22 in a state where the backup destination management information 23 is stored. Thus, other client devices 22 that are geographically distant from the backup source are determined as backup destinations. For example, areas that do not suffer a simultaneous disaster even if an earthquake occurs, areas with different power conditions, etc. The client device 22 installed in an area that is not easily affected by the disaster can be determined as a backup destination, further increasing the safety.

In the second embodiment described above, it is determined whether or not geographically away from the backup source based on the administrator telephone number. However, the determination element is not limited to the administrator telephone number, but an address. Or a zip code.
In the second embodiment described above, one client device 22 is determined as a backup destination. However, a plurality of client devices 22 are determined, and the same backup target data is transferred to the plurality of client devices 22. If it is transmitted and individually backed up, safety can be further increased.

  In the second embodiment described above, when determining the backup destination, the element is whether it is geographically separated from the backup source. However, the reliability, processing capability, and free space are arbitrarily selected and designated. In addition, all of reliability, processing capability, and free space may be used as elements.

 Also, a recording medium having a computer readable program code for storing and managing information relating to the installation location of each data processing device, the installation location of the data processing device as a backup source for backing up data, and other A computer that records a program for realizing a function of determining another data processing apparatus geographically separated from the backup source as a backup destination by comparing with the installation location of each data processing apparatus is readable A recording medium may be provided.

The block diagram which showed the outline | summary of the whole structure of a local communication system. The figure for demonstrating the relationship between the method of determining a backup destination, and the flag value matched with it. The figure which showed the content of the log | history file 4 transmitted and set with respect to this backup destination side, when the data processing apparatus 1 of backup origin backs up data to the other data processing apparatus 1. The figure which showed the backup response information 5 which the data processing apparatus 1 which received the backup request from any one of the data processing apparatuses 1 responds in response to the request. The figure for demonstrating the reliability level "QUALITY" in the backup response information 5. FIG. The figure for demonstrating the free capacity level "CAPACITY" in the backup response information 5. FIG. The figure for demonstrating the processing capability level "POWER" in the backup response information 5. FIG. FIG. 2 is a block diagram showing basic components of each data processing device 1. 6 is a flowchart showing backup control that is started in response to a backup instruction from an operator when a data processing apparatus 1 backs up data to another data processing apparatus 1. 10 is a flowchart for explaining the backup destination determination control shown in FIG. 9 in detail. The flowchart which showed the information collection control in the data processing apparatus 1 of the side which receives a backup request. The block diagram which showed the whole structure of the server client system in 2nd Example. The figure which showed the content of the backup destination management information 23 memorize | stored and managed by the server apparatus 21 side. The flowchart which showed the data processing between the server apparatus 21 and the client apparatus 22 of a transmission side (backup source) and a receiving side (backup destination). The flowchart which showed the receiving side (backup destination) selection process.

Explanation of symbols

1 Data processing device 2 Network 3 Data file to be backed up 4 History file 5 Backup response information 11 CPU
12 ROM
13 RAM
14 External storage device 15 Auxiliary storage device 16 Input device 17 Display device 18 Communication I / F
21 Server device 22 Client device 23 Backup destination management information DK disk

Claims (12)

A data backup control device that selects any one of a plurality of data processing devices connected via a network as a backup destination,
An acquisition means for acquiring information on reliability of each data processing device at that time by accessing a plurality of data processing devices when backing up data;
Determining means for determining a highly reliable data processing device as a backup destination by comparing information on each reliability acquired by the acquiring means;
A data backup control device comprising:   The information on the reliability of the data processing device is information indicating at least one of information on an uninterruptible power supply, a disk array, an operation rate, a disk failure history, and a system down history. Item 1. A data backup control device according to item 1. A data backup control device that selects any one of a plurality of data processing devices connected via a network as a backup destination,
An acquisition means for acquiring information on the processing capability of each data processing device at that time by accessing a plurality of data processing devices when backing up data;
A determining unit that determines a data processing device having a high processing capability as a backup destination by comparing information on each processing capability acquired by the acquiring unit;
A data backup control device comprising:   4. The data backup control device according to claim 3, wherein the information regarding the processing capability of the data processing device is information including at least one of an operation status and a communication status of the data processing device at the present time. A data backup control device that selects any one of a plurality of data processing devices connected via a network as a backup destination,
When determining the backup destination based on the information on the reliability of each data processing device at the time of data backup, the information on the processing capacity, and the information on the free capacity of the memory, reliability, processing capacity, free Selecting means for selecting at least one of the capacities;
When reliability is selected by this selection means, a high-reliability data processing device is determined as a backup destination by comparing information on each reliability acquired from each data processing device, and the processing capability is selected. In this case, a data processing device having a high processing capability is determined as a backup destination by comparing information on each processing capability acquired from each data processing device. Determining means for determining a data processing device having a large free space as a backup destination by comparing information on the free space of each memory acquired from
A data backup control device comprising: The determining means preferentially determines a backup destination having a record of storing the same data in the past by referring to the backup history,
The data backup control device according to any one of claims 1, 3, and 5. A data backup control device that selects any one of a plurality of data processing devices connected via a network as a backup destination,
Installation location storage means for storing and managing information relating to the installation location of each data processing device;
By comparing the installation location of the data processing device that is the backup source for backing up data with the installation location of each other data processing device, another data processing device that is geographically separated from the backup source is determined as the backup destination. A decision means to
A data backup control device comprising:   8. The data backup control device according to claim 7, wherein the information relating to the installation location of the data processing device is information indicating at least one of information relating to a telephone number, an address, and a postal code. Against the computer,
When backing up data, a function of acquiring information on the reliability of each data processing device at that time by accessing a plurality of data processing devices;
A function for determining a currently highly reliable data processing device as a backup destination by comparing the obtained information on each reliability; and
A program to realize Against the computer,
When backing up data, a function of acquiring information on the processing capacity of each data processing device at that time by accessing a plurality of data processing devices;
A function to determine a data processing device having a high processing capacity as a backup destination at the present time by comparing information about each acquired processing capacity;
A program to realize Against the computer,
When determining the backup destination based on the information on the reliability of each data processing device at the time of data backup, the information on the processing capacity, and the information on the free capacity of the memory, reliability, processing capacity, free A function to select at least one of the capacities,
When reliability is selected, a highly reliable data processing device is determined as a backup destination by comparing information on each reliability acquired from each data processing device, and when processing capability is selected The data processing device having a high processing capacity is determined as a backup destination by comparing the information on each processing capability acquired from each data processing device, and when the free capacity is selected, each data processing device acquired from each data processing device A function for determining a data processing device with a large free space as a backup destination by comparing information on free space in the memory;
A program to realize Against the computer,
A function for storing and managing information on the location of each data processing device;
By comparing the installation location of the data processing device that is the backup source for backing up data with the installation location of each other data processing device, another data processing device that is geographically separated from the backup source is determined as the backup destination. Function to
A program to realize

Images