JP5882856B2 - File move processing device - Google Patents

Description

  The present invention provides a method for quickly updating a file when a file is moved between the first file storage device and the second file storage device and the file is updated in the first file storage device. Regarding technology.

  Conventionally, a file stored in a high-quality file storage device (hereinafter referred to as a first file storage device) may be updated after a certain time from the last update date, for example. It is considered low and is transferred to a low-quality file storage device (hereinafter referred to as a second file storage device). As a result, the free capacity of the first file storage device can be increased.

  When there is a request for access to the file transferred to the second file storage device, the file is transferred to the first file storage device and updated, for example, in the first file storage device.

JP 2012-14632 A JP 2012-27934 A JP 2009-2111132 A

  As described above, conventionally, even if an attempt is made to update a file in the second file storage device, the file must first be moved to the first file storage device, and cannot be updated during that time. There is a problem that it cannot be done quickly.

  The present invention has been made in view of the above-described problems. The object of the present invention is to move a file between a first file storage device and a second file storage device, and to use the first file storage device. It is an object of the present invention to provide a technique for enabling a file to be updated quickly when updating a file.

In order to solve the above problems, a first aspect of the present invention is a file movement processing device for moving a file between a first file storage device and a second file storage device, wherein the file is the first file storage device. The file movement processing device is updated in a storage device, and the file movement processing device calculates a time value indicating a time period for updating the file, and when the file is updated, the file is stored in the second file storage. A file movement processing unit for moving a file to the first file storage device after a time corresponding to the time value has elapsed since the file was moved to the device and the file was moved to the second file storage device. It is characterized by providing.

According to a second aspect of the present invention, there is provided a file movement processing device for moving a file between a first file storage device and a second file storage device, wherein the file is stored in the first file storage device in a first update cycle. Alternatively, the file movement processing device is updated at a second update cycle longer than the first update cycle, and the file movement processing device has a first time value indicating the first update cycle and a second update cycle indicating the second update cycle. A time value calculation unit for calculating a time value of 2 , and when the time corresponding to the first time value has elapsed since the file was updated and the file was moved to the first file storage device When the time corresponding to the second time value has elapsed since the file was moved to the second file storage device and the file was moved to the second file storage device, Characterized in that it comprises a serial file movement processing unit for moving the first file storage.

  According to the present invention, when a file is moved between the first file storage device and the second file storage device and the file is updated by the first file storage device, a time value indicating the file update cycle is calculated. When the file is updated, the file is moved to the second file storage device, and when the time corresponding to the time value has elapsed since the file was moved to the second file storage device, the file is moved to the first file storage device. By moving to the file storage device, it is possible to reduce the possibility of a situation in which the file is moved to the first file storage device after a request for access to the file is generated. Can be done.

1 is a configuration diagram of a file management system including a file migration processing device according to a first embodiment. FIG. It is a figure for demonstrating the update cycle calculated from an update date and update date. 2 is a functional block diagram showing a schematic configuration of a file migration processing device 1. FIG. It is a flowchart which shows the flow of the process which the file movement processing apparatus 1 of 1st Embodiment performs regularly. It is a flowchart which shows the flow of the process which the file movement processing apparatus 1 of 2nd Embodiment performs regularly. It is a figure which shows an example of the update date in 2nd Embodiment, and an update period.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is a configuration diagram of a file management system including a file migration processing apparatus according to the first embodiment.

  The file management system is a network system including a file movement processing device 1, a first file storage device 2 (hereinafter referred to as file storage device 2), and a second file storage device 3 (hereinafter referred to as file storage device 3). Each of the file storage devices 2 and 3 is a device capable of storing and reading a file.

  When the file stored in the file storage device 2 is updated, the file movement processing device 1 moves the file to the file storage device 3, and when it is time to update the file, or there is a request for access to the file. If so, the file is moved to the file storage device 2.

  FIG. 1 shows a case where a file being moved passes through the file move processing device 1, but the file may be moved between the file storage devices 2 and 3 without going through the file move processing device 1.

  FIG. 2 is a diagram for explaining, for example, the update date / time managed by the file storage device 2 and the update cycle calculated from the update date / time.

  For example, the file storage device 2 stores the update date and time immediately after the update for each file. In the figure, only the update date is shown for simplification. Further, the file move processing device 1 may store the update date and time.

  Further, as shown in FIG. 2, in the present embodiment, the length of time between update dates and times (referred to as “update cycle”) is calculated.

  FIG. 3 is a functional block diagram illustrating a schematic configuration of the file migration processing apparatus 1.

  The file migration processing device 1 includes a time value calculation unit 11 for obtaining a time value indicating a file update cycle (hereinafter referred to as a time value T), and when the file is updated, the file is transferred from the file storage device 2 to the file storage device 3. When a time corresponding to the time value T has elapsed since the file was moved to the file storage device 3, the file movement processing unit 12 for moving the file to the file storage device 2 and the update cycle for each file are set. And an update cycle database 13 to be stored. The update cycle database 13 stores an update cycle as shown in FIG. 2 for each file.

  FIG. 4 is a flowchart illustrating a flow of processing that is regularly performed by the file migration processing apparatus 1 according to the first embodiment.

  When the file is stored in the file storage device 2, the file movement processing unit 12 inquires of the file storage device 2 whether the file has been updated (S1).

  If the file has not been updated (S1: NO), for example, after a predetermined time has elapsed, the file movement processing unit 12 inquires whether the file has been updated again (S1).

  On the other hand, when the file is updated (S1: YES), the file movement processing unit 12 acquires the contents of the file, applies a technology such as a base filter to the contents, and the file tends to be updated periodically. It is determined whether or not (S3).

  If the file has a tendency to be regularly updated (S3: YES), the file movement processing unit 12 acquires the latest update date and time from the file storage device 2 (S5).

  Next, the file movement processing unit 12 determines whether or not the update period is stored in the update period database 13, that is, whether or not the file has been updated before (S7).

  If the file has not been updated before (S7: NO), the file movement processing unit 12 returns to step S1 and inquires whether the file has been updated again (S1).

  On the other hand, if the file has been updated before (S7: YES), the time value calculator 11 obtains a time value T indicating the update period based on the update period of the update period database 13 (S9).

  Here, an example of a method for calculating the time value T will be described.

  For example, when there are two updates, the time value calculation unit 11 sets the update period between the first update date and time and the second update date and time as the time value T.

  Alternatively, when the time value calculation unit 11 has been updated three or more times, the time value calculation unit 11 sets an update cycle between a predetermined update time (for example, the latest time) and the update date and time immediately before the time value T And

Or the time value calculation part 11 calculates the time value T by Formula (1), for example, when n + 1 times (n is 2 or more) has been updated.

  However, A_i is an update cycle between the i-th update date and the i + 1-th update date (hereinafter referred to as the i-th update cycle).

  That is, the time value calculation unit 11 sets the average update period as the time value T.

Or the time value calculation part 11 calculates the time value T by Formula (2), for example, when n + 1 times (n is 2 or more) has been updated.

  However, A_i is the i-th update cycle.

Alternatively, the time value calculation unit 11 calculates all the update cycles. For example, when there are m types of update cycle lengths (m is 2 or more), the time value T is calculated by Equation (3). calculate.

Where A_j is the jth update cycle
N_j is the number of times the jth update cycle is obtained.

  If the file is not a file that tends to be updated regularly (S3: NO), or if the time value T is calculated (S9), the file movement processing unit 12 is in a situation that matches a predetermined policy. It is determined whether there is (S10).

  For example, (1) If a policy of “move a file immediately” is established, or (2) if a condition is satisfied due to a certain parameter (existing access date and time), or (3 ) If it is a predetermined number of days before the time value T, or (4) If there is no policy, YES is determined in step S10, and the file movement processing unit 12 moves the file to the file storage device 3 (S11). For example, the file movement processing unit 12 acquires a file from the file storage device 2 and transmits it to the file storage device 3 (S11). Alternatively, the file movement processing unit 12 instructs the file storage device 2 to transmit the file to the file storage device 3 (S11).

  On the other hand, if NO is determined in step S10, the process returns to step S1, and the file movement processing unit 12 inquires again whether the file has been updated (S1).

  That is, by performing step S10, it is possible not to move the file to the file storage device 3 uniformly after updating, but to keep the file in the file storage device 2 depending on a combination of various conditions. That is, in the concept of Information Lifecycle management, it is natural to move a file to the file storage device 3, but various combinations of conditions can be considered, and depending on the file, depending on the file, It is also possible to keep the storage device 2.

  If the file is moved (S11), the file movement processing unit 12 determines whether or not a time corresponding to the time value T has elapsed since the file was moved to the file storage device 3 (S13).

  If the time corresponding to the time value T has not elapsed (S13: NO), the file movement processing unit 12 inquires of the file storage device 2 whether there is a request to access the file (S15).

  If there is no request for access to the file (S15: NO), the file movement processing unit 12 returns to step S13 and determines again whether or not the time corresponding to the time value T has passed (S13).

  If the time corresponding to the time value T has elapsed (S13: YES) or if there is a request for access to the file (S15: YES), the file movement processing unit 12 moves the file to the file storage device 2. (S17). For example, the file movement processing unit 12 acquires a file from the file storage device 3 and transmits it to the file storage device 2 (S17). Alternatively, the file movement processing unit 12 instructs the file storage device 3 to transmit the file to the file storage device 2 (S17). The file moved to the file storage device 2 is accessed as requested, for example. At that time, the file is updated, for example.

  Thereafter, returning to step S1, the file movement processing unit 12 inquires again whether or not the file has been updated (S1).

  Therefore, according to the first embodiment, when a time corresponding to the time value T has elapsed, a file in the file storage device 3 is moved to the file storage device 2 to access or update the file. Can be done instantly. In other words, it is possible to reduce the possibility of a situation in which a file is moved to the file storage device 2 after a request for access to the file is generated, thereby enabling quick access and update of the file.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. In the second embodiment, the same or similar apparatus and apparatus configuration as those in the first embodiment are used, and the same or similar elements are redundantly described by using the reference numerals used in the first embodiment. For brevity, the description will focus on matters different from the first embodiment.

  FIG. 5 is a flowchart illustrating a flow of processing that is regularly performed by the file migration processing apparatus 1 according to the second embodiment.

  When the file is stored in the file storage device 2, the file movement processing unit 12 inquires of the file storage device 2 whether or not the file has been updated (S101).

  If the file has been updated (S101: YES), the file movement processing unit 12 acquires the contents of the file, applies a technique such as a base filter to the contents, and the file tends to be updated periodically. It is determined whether or not (S103).

  If the file has a tendency to be regularly updated (S103: YES), the file movement processing unit 12 acquires the latest update date and time from the file storage device 2 (S105).

  Next, the file movement processing unit 12 determines whether or not the update period is stored in the update period database 13, that is, whether or not the file has been updated before (S7).

  If the file has been updated before (S107: YES), the time value calculator 11 calculates a time value indicating the file update cycle (S109).

  Here, the time value calculation unit 11 performs the first time value corresponding to the first update cycle when the file is updated at the first update cycle or the second update cycle longer than the first update cycle. Then, a second time value corresponding to the second update cycle is obtained (S109).

  For example, as shown in FIG. 6, the time value calculation unit 11 is arranged in the order of 1 day, 1 day, 7 days, 1 day, 8 days,... A first time value is calculated for “1 day”, and a second time value is calculated for the update period “7 days” and “8 days”.

  Here, an example of a calculation method of the first and second time values will be described.

  For example, the time value calculation unit 11 sets the minimum value of all the update cycles as the first time value and sets the maximum value as the second time value.

  Alternatively, the time value calculation unit 11 calculates the standard deviation σ of the update cycle and the time value T according to the above formula (1), T-3σ is set as the first time value, and T + 3σ is set as the second time value. To do.

  Alternatively, the time value calculation unit 11 groups all update cycles into short update cycles and long update cycles under the following conditions.

  Condition: When the standard deviation of the short update cycle is σ, the long update cycle is longer than 3σ.

  Then, the time value calculation unit 11 calculates the first time value as if the time value T was calculated from the short update cycle group, and the time value T was calculated from the long update cycle group. Second time value is calculated.

  If the file has not been updated (S101: NO), or if the first and second time values have been calculated (S109), the file movement processing unit 12 proceeds to step S111 and moves the file to the file storage device 2 It is determined whether or not a time corresponding to the first time value has elapsed since the movement to (S111).

  If the time corresponding to the first time value has not elapsed (S111: NO), the file movement processing unit 12 returns to step S101 and inquires whether the file has been updated again (S101).

  If the file is not a file that tends to be regularly updated (S103: NO), or if the file has not been updated before (S107: NO), or the first time If the time corresponding to the value has elapsed (S111: YES), the file is moved to the file storage device 3 (S113). For example, the file movement processing unit 12 acquires a file from the file storage device 2 and transmits it to the file storage device 3 (S113). Alternatively, the file movement processing unit 12 instructs the file storage device 2 to transmit the file to the file storage device 3 (S113).

  Next, the file movement processing unit 12 determines whether or not a time corresponding to the second time value has elapsed since the file was moved to the file storage device 3 (S115).

  If the time corresponding to the second time value has not elapsed (S115: NO), the file movement processing unit 12 inquires of the file storage device 2 whether there is a request for access to the file (S117). ). If there is no request for access to the file (S117: NO), the file move processing unit 12 returns to step S115 and determines again whether or not the time corresponding to the second time value has passed (S115).

  If the time corresponding to the second time value has elapsed (S115: YES) or if there is a request for access to the file (S117: YES), the file movement processing unit 12 stores the file in the file storage device 2. Move (S119). For example, the file movement processing unit 12 acquires a file from the file storage device 3 and transmits it to the file storage device 2 (S119). Alternatively, the file movement processing unit 12 instructs the file storage device 3 to transmit the file to the file storage device 2 (S119). The file moved to the file storage device 2 is accessed as requested, for example. At that time, the file is updated, for example.

  Thereafter, returning to step S101, the file movement processing unit 12 inquires again whether or not the file has been updated (S101).

  Therefore, according to the second embodiment, as in the first embodiment, when a time corresponding to the second time value has passed, a file in the file storage device 3 is stored in the file storage device 2. By moving it, you can instantly access and update the file. That is, the second time value is used for the same purpose as the time value T.

  Further, according to the second embodiment, the file in the file storage device 2 is not moved to the file storage device 3 immediately after the update, but until the time corresponding to the first time value elapses. By keeping it in the file storage device 2, it is possible to immediately access and update the file. That is, when there is a request for access to the file, the file is already moved to the file storage device 3, and therefore, the possibility that the file must be returned to the file storage device 2 can be reduced. , Can access and update files quickly.

DESCRIPTION OF SYMBOLS 1 File movement processing apparatus 2 1st file storage apparatus 3 2nd file storage apparatus 11 Time value calculation part 12 File movement processing part 13 Update period database

Claims (2)

A file movement processing device for moving a file between a first file storage device and a second file storage device,
The file is updated in the first file storage device;
The file movement processing device
A time value calculation unit for calculating a time value indicating an update cycle of the file;
When the file is updated, the file is moved to the second file storage device, and when the time corresponding to the time value has elapsed since the file was moved to the second file storage device, the file is moved to the second file storage device. And a file movement processing unit for moving to the first file storage device. A file movement processing device for moving a file between a first file storage device and a second file storage device,
The file is updated in the first file storage device in a first update cycle or a second update cycle longer than the first update cycle,
The file movement processing device
And time value calculating unit for calculating a second time value indicating a first time value and the second update cycle indicating the first update cycle,
When a time corresponding to the first time value has elapsed since the file was updated and the file was moved to the first file storage device, the file is moved to the second file storage device. A file movement processing unit for moving a file to the first file storage device after a time corresponding to the second time value has elapsed since the file was moved to the second file storage device ;
File movement processing apparatus you comprising: a.

Images