JPH07281939A - File transfer system - Google Patents

Abstract

PURPOSE:To provide a file transfer system which can prevent the frequent failures of file transfer due to shortage of an idle area of the transfer destination volume without applying any burden on a user. CONSTITUTION:A user inputs a file transfer instruction including a file name of a transfer subject file 2 and a volume name of a transfer destination disk volume 3-1. Thus the size of the file 2 is acquired by a file size acquiring means 11, and an idle area deciding means 12 decides whether the volume 3-1 has an idle area equal to the file size. If the volume has an idle area, a designated volume transfer means 13 transfers the file 2 to the volume 3-1. If the volume has no idle area, another volume transfer means 16 detects a disk volume having an idle area equal to the file size out of a disk volume group 3 and transfers the file 2 to this disk volume.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file transfer system for transferring a file to a disk volume in a system having a plurality of disk volumes.

[0002]

2. Description of the Related Art Conventionally, in a system having a plurality of disk volumes, in order to transfer a file stored in a magnetic tape or the like to a disk volume, a user has designated a transfer target file and a transfer destination disk volume. When the file transfer instruction is input to the file transfer function unit, the file transfer function unit compares the file size of the transfer target file with the size of the free area of the transfer destination disk volume, and the transfer destination disk volume has free space for the file size. If the area exists, the file to be transferred is transferred to the transfer destination disk volume and the transfer result is output.If it does not exist, a message indicating that there is no free space for the file size in the transfer destination disk file is output. It was terminating abnormally.

When the user sees the message output from the file transfer function unit and recognizes that the transfer destination disk volume does not have an empty area corresponding to the file size, another disk volume existing in the same system is transferred to the transfer destination disk. Input a file transfer instruction as a volume to the file transfer function unit. As a result, the file transfer function unit performs the same processing as described above.

[0004]

As described above, conventionally, if the size of the free area existing in the transfer destination disk volume designated by the file transfer instruction is smaller than the file size of the file to be transferred, abnormal termination occurs. Since the message only indicating that there is no free space for the file size in the transfer destination disk volume is output, the user once again selects the transfer destination disk volume whose free space size is smaller than the file size. There is a problem that the file transfer function unit may be abnormally terminated again when the file transfer instruction for the volume is input. That is, there is a problem that transfer failure may be repeated many times due to lack of free space in the transfer destination disk volume. Incidentally, if the user manages the sizes of the free areas of a plurality of disk volumes existing in the system, such a problem can be solved, but the user is burdened with the problem.

An object of the present invention is to provide a file transfer system which can prevent repeated file transfer failures due to lack of free space in a transfer destination disk volume without burdening a user. is there.

Incidentally, Japanese Patent Application Laid-Open No. 63-88656 discloses that
A technique has been disclosed that, if the requested space does not exist on the disk, the unnecessary files on the disk are determined and the files determined to be unnecessary are deleted in the transfer destination disk volume by the file size of the transfer target file. If there is no free space, delete unnecessary files from the transfer destination disk volume by using the above technique to secure a free space for the file size on the transfer destination disk volume, and transfer the target file to the secured free space. Although it may be transferred, there is a problem that the processing speed becomes slower because unnecessary file determination processing, file deletion processing, and the like must be performed.

[0007]

In order to achieve the above object, the present invention provides a plurality of disk volumes, a file size acquisition means for acquiring a file size of a transfer target file designated by a file transfer instruction, and the file transfer. A free space determining unit that determines whether or not a free area in which a file having the file size acquired by the file size acquiring unit can be transferred exists in the disk volume of the transfer destination specified by the instruction, and if the free space determining unit exists. As a result of the determination, it is determined that the file to be transferred designated by the file transfer instruction is transferred to the disk volume of the transfer destination designated by the file transfer instruction, and the free space determination means does not exist. Of the plurality of disk volumes A disk volume having a free area equal to or larger than the file size acquired by the file size acquisition means and outputting the volume name to an output device; and a transfer result of the file transfer by the designated volume transfer means. And a transfer result notifying unit for outputting to an output device.

Another object of the present invention is to notify the user when a disk volume having a free area corresponding to the file size of a file to be transferred does not exist among a plurality of disk volumes provided in the system. In order to achieve the above, when the free volume notifying means cannot find a disk volume having a free area equal to or larger than the file size acquired by the file size acquiring means from the plurality of disk volumes, the fact that the output device notifies Output to.

Further, according to the present invention, when the transfer destination disk volume designated by the user does not have a free area for the file size of the transfer target file, another disk volume having a free area for the file size of the transfer target file is provided. In order to achieve the purpose of being able to automatically transfer the transfer target file, a plurality of disk volumes, a file size acquisition unit for acquiring the file size of the transfer target file designated by the file transfer instruction, and the file A free space determining unit that determines whether or not a free area in which a file having the file size acquired by the file size acquiring unit can be transferred exists in the transfer destination disk volume specified by the transfer instruction, and the free space determining unit exists. If it is determined that the file transfer instruction And volume specified transfer means for transferring the indicated transfer target file to a disk volume of transfer destination designated by said file transfer instruction I,
When the free space determination unit determines that the disk volume does not exist, a search is made for a disk volume having a free area equal to or larger than the file size acquired by the file size acquisition unit, and the transfer target is transferred to the disk volume. Separate volume transfer means for transferring a file, and when file transfer is performed by the designated volume transfer means, the transfer result by the designated volume transfer means is output to an output device, and the file transfer is performed by the different volume transfer means. And a transfer result notifying means for outputting the transfer result by the separate volume transfer means to the output device, and further outputting the volume name of the transfer destination disk volume to the output device when the transfer result is normally completed. It is equipped with.

Further, according to the present invention, in the case where a disk volume having a free area corresponding to the file size of a file to be transferred does not exist among a plurality of disk volumes provided in the system, the user is notified of that fact. In order to achieve the purpose of notifying, the transfer result notifying means is capable of finding a disk volume having a free area equal to or larger than the file size acquired by the file size acquisition means from the plurality of disk volumes by the different volume transfer means. If not, that effect is output to the output device.

[0011]

When the user inputs a file transfer instruction, the file size acquisition means acquires the file size of the transfer target file instructed by the file transfer instruction, and the free space determination means receives the transfer destination disk volume instructed by the file transfer instruction. It is determined whether or not there is a free area corresponding to the file size of the transfer target file.

If the free space determining means determines that the transfer destination disk volume has a free area corresponding to the file size of the transfer target file, the designated volume transferring means transfers the transfer target file to the transfer destination disk volume, The transfer result notifying means notifies the user of the transfer result.

If the free space determining means determines that the transfer destination volume does not have a free area corresponding to the file size of the transfer target file, the free volume notifying means causes the free volume notifying means to select among a plurality of disk volumes provided in the system. A disk volume having a free area corresponding to the file size of the transfer target file is searched from, and the volume name of the searched disk volume is output to the output device to notify the user. When the free volume notifying means cannot find a disk volume having a free area equal to or larger than the file size of the transfer target file, the transfer result notifying means notifies the user by outputting the fact to the output device.

In another configuration, when the user inputs a file transfer instruction, the file size acquisition means acquires the file size of the transfer target file instructed by the file transfer instruction, and the vacancy determination means receives the file transfer instruction. It is determined whether or not there is a free area corresponding to the file size of the transfer target file in the designated transfer destination disk volume.

If the free space determining means determines that the transfer destination disk volume has a free area corresponding to the file size of the transfer target file, the designated volume transferring means transfers the transfer target file to the transfer destination disk volume. The transfer result notifying means notifies the user of the transfer result.

If the free space determining means determines that the transfer destination disk volume does not have a free area for the file size of the file to be transferred, another volume transferring means is used for the plurality of disk volumes provided in the system. A disk volume having a free area equal to or larger than the file size of the transfer target file is searched from the inside, the transfer target file is transferred to the found disk volume, and the transfer result notifying unit notifies the user of the transfer result.
If the transfer result is normal termination, the transfer result notifying means also notifies the user of the volume name of the transfer destination disk volume. Further, if the separate volume transfer means cannot find a disk volume having a free area for the transfer target file size from the plurality of disk volumes provided in the system, the transfer result notifying means notifies that fact. Notify the user.

[0017]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention. A file transfer function unit 1, a file 2 stored on a magnetic tape to be transferred, and a plurality of disk volumes 3-1 to be transfer destinations. The disk volume group 3 is composed of 3-n, the keyboard 4 and the display device 5.

The file transfer function unit 1 is composed of a file size acquisition means 11, a free space determination means 12, a designated volume transfer means 13, a transfer result notification means 14, and a free volume notification means 15.

The file size acquisition means 11 has a function of acquiring the file size of the transfer target file designated by the file transfer instruction including the file name of the transfer target file and the volume name of the transfer destination disk volume.

The free space determining means 12 determines whether or not a free area corresponding to the file size acquired by the file size acquiring means 11 exists in the transfer destination disk volume. Is started, and if it does not exist, the empty volume notifying means 15
Has the function of starting up.

When it is determined by the free space determining means 12 that the transfer destination disk volume instructed by the file transfer instruction has a free area for the file size of the transfer target file, the designated volume transfer means 13 determines that the transfer target file is to be transferred. It has the function of transferring to the transfer destination disk volume.

The transfer result notifying means 14 has a function of displaying the transfer result (normal end, abnormal end) by the designated volume transfer means 13 on the display device 5.

If the free volume notifying means 15 determines that the free space determining means 12 does not have a free area of the file size of the transfer target file in the transfer destination disk volume instructed by the file transfer instruction, the disk volume group It has a function of searching for a disk volume having a free area corresponding to the file size of the transfer target file from among 3 and displaying the volume name of the found disk volume on the display device 5. Furthermore,
The free volume notifying means 15 has a function of displaying the fact on the display device 5 when the disk volume satisfying the above-mentioned conditions cannot be found.

FIG. 2 is a flow chart showing a processing example of the file size acquisition means 11, FIG. 3 is a flow chart showing a processing example of the free space determining means 12, FIG. 4 is a flow chart showing a processing example of the designated volume transfer means 13, and FIG. It is a flow chart showing a processing example of the free volume notifying means 15, and the operation of this embodiment will be described below with reference to each drawing.

When transferring a file to the disk volume using the file transfer function unit 1, the user inputs a file transfer instruction including the file name of the transfer target file and the volume name of the transfer destination disk volume from the keyboard 4. Now, for example, if the file 2 is transferred to the disk volume 3-1, the user includes the file name of the file 2 as the file name of the transfer target file and the disk volume 3-1 as the volume name of the transfer destination disk volume. The file transfer instruction including the volume name will be input.

When a file transfer instruction is input from the keyboard 1, the file transfer function unit 1 activates the file size acquisition means 11.

When the file size acquisition means 11 is activated, as shown in the flow chart of FIG. 2, the file size of the file 2 for which transfer is instructed by the file transfer instruction is referred to the header part of the file 2. By doing so (step S1), the obtained file size is passed to the free space determining means 12 (step S2).

When the file size of the file 2 is passed from the file size acquisition means 11, the free space determination means 12 starts the processing shown in the flowchart of FIG. 3, and first, a file transfer instruction instructs the file to be the transfer destination. The size of the free area existing in the disk volume 3-1 (the total value of the free areas when there are a plurality of free areas) is obtained by referring to the directory provided in the disk volume 3-1 (step S11).

Next, the vacancy judging means 12 carries out step S
When the size of the free area of the disk volume 3-1 obtained in 11 and the file size of the file 2 passed from the file size acquisition means 11 are compared and the size of the free area is equal to or larger than the file size (YES in step S12).
S) passes the position information of the free area existing on the disk volume 3-1 to the designated volume transfer means 13 (step S13), and otherwise starts the free volume notification means 15 (step S14).

When the designated volume transfer means 13 receives the position information of the free area existing on the disk volume 3-1 from the free space determination means 12, the free space determination means 12 stores the file 2 as shown in the flow chart of FIG. Transfer to the free area of the disk volume 3-1 according to the position information of the free area passed from (step S21).

When the transfer of the file 2 is successful
(YES in step S22), the designated volume transfer means 13 changes the directory of the disk volume 3-1 to match the state after transfer of the file 2 (step S23), and then the file transfer is completed normally. Is sent to the transfer result notifying means 14 (step S24). By displaying this message on the display device 5, the transfer result notifying means 14 notifies the user that the file transfer has been completed normally.

If the file transfer fails (NO in step S22), the process in step S21 is executed again, and the file transfer is not successful even after executing the process in step S21 a predetermined number of times (step S22). Is N
O, YES in step S25) is a message indicating that the file transfer has ended abnormally.
To (step S26). The transfer result notifying means 14
By displaying this message on the display device 5, the user is notified that the file transfer has ended abnormally.

On the other hand, when the free volume notifying means 15 is activated by the free space determining means 12, as shown in the flow chart of FIG. 5, the first disk volume 3-1 in the disk volume group 3 transfers the file. It is determined whether or not the transfer destination disk volume is designated by the instruction (steps S31 and S32).

In the case of this example, the transfer destination disk volume instructed by the file transfer instruction is the disk volume 3-1 and the determination result of step S32 is YES.
Therefore, the free volume notifying means 15 determines whether or not the second disk volume 3-2 is the transfer destination disk volume instructed by the file transfer instruction (steps S36, S37, S32).

Since the second disk volume 3-2 is not the transfer destination disk volume instructed by the file transfer instruction, and the judgment result in step S32 is NO, the free volume notifying means 15 causes the second disk volume 3-2 to operate. The size of the free area of the volume 3-2 is calculated (step S33), and the calculated size of the free area is compared with the file size of the transfer target file 2 (step S3).
4).

Then, the second disk volume 3
-2 when the size of the free area is equal to or larger than the file size of the transfer target file 2 (step S34), the volume name of the second disk volume 3-2 is displayed on the display device 5 (step S35), and otherwise. In this case, the same processing is performed on the third disk volume 3-3. Even if the above-described processing is performed on all the disk volumes, it is not possible to find a disk volume whose free area size is equal to or larger than the file size of the transfer target file 2 (YES in step S37).
Indicates that the free volume notifying means 15 displays a message indicating that there is no disk volume having a free area sufficient to transfer the file 2.
Is displayed (step S38).

Now, for example, if the size of the free area of the second disk volume 3-2 is equal to or larger than the file size of the transfer target file 2, the free volume notifying means 15 causes the display device 5 to display the second free volume. The volume name of the disk volume 3-2 is displayed, and the processing ends.

When the volume name of the disk volume 3-2 is displayed on the display device 5, the user includes the file name of the file 2 as the file name of the transfer target file and the second volume name of the transfer destination disk volume. A file transfer instruction including the volume name of the second disk volume 3-2 is input from the keyboard 4. In this case, the second disk volume 3-2
Has a free area equal to or larger than the file size of the transfer target file 2, the file transfer will not fail due to lack of free area.

If a message indicating that there is no disk volume capable of transferring the file 2 is displayed on the display device 5, the user selects, for example, an unnecessary file from the disk volumes 3-1 to 3-n. Select a disk volume that stores the file, delete unnecessary files from the disk volume, and create enough free space to transfer file 2.
The processing such as inputting a file transfer instruction is performed again.

FIG. 6 is a block diagram of another embodiment of the present invention. The difference from the embodiment shown in FIG. 1 is that a file transfer function unit 1'is provided instead of the file transfer function unit 1. is there. In FIG. 6, the same symbols as those in FIG. 1 represent the same parts.

The file transfer function unit 1'is composed of a file size acquisition unit 11, a space determination unit 12 ', a designated volume transfer unit 13, a transfer result notification unit 14', and another volume transfer unit 16. There is.

The free space determining means 12 'determines whether or not a free space corresponding to the file size of the transfer target file acquired by the file size acquiring means 11 exists in the transfer destination disk volume. It has a function of passing the position information of the free area existing in the transfer target disk volume to the designated volume transfer means 13, and activating the separate volume transfer means 16 when it does not exist.

The separate volume transfer means 16 has a function of searching the disk volume group 3 for a disk volume having a free area corresponding to the file size of the transfer target file and transferring the transfer target file to the disk volume.

The transfer result notifying means 14 'is the transfer result by the designated volume transfer means 13 (normal end, abnormal end) and the transfer result by another volume transfer means 16 (normal end, abnormal end, normal end, destination disk). The display device 5 has a function of displaying the volume name of the volume).

FIG. 7 is a flow chart showing a processing example of the vacancy judging means 12 ', and FIG. 8 is a flow chart showing a processing example of the separate volume transfer means 16. The operation of this embodiment will be described below with reference to the drawings. .

When the user inputs a file transfer instruction including the file name of the file to be transferred (file 2) and the volume name of the transfer destination disk volume (disk volume 3-1) from the keyboard 4, the file size is acquired. The means 11 acquires the file size of the transfer target file 2 and passes the acquired file size to the free space judging means 12 ′, as described above.

When the file size of the transfer target file 2 is passed from the file size acquisition means 11, the vacancy judging means 12 'receives the transfer destination disk volume 3-specified by the file transfer instruction as shown in the flowchart of FIG.
The size of the free area existing in 1 is calculated (step S4
1) Then, it is determined whether or not the size of the free area existing in the transfer destination disk volume 3-1 is equal to or larger than the file size of the transfer target file 2 (step S4).
2).

When it is determined that the size of the free area is equal to or larger than the file size (YES in step S42).
S) passes the position information of the free area existing on the transfer destination volume 3-1 to the designated volume transfer means 13 (step S43), and otherwise (step S42 returns N.
O) activates the separate volume transfer means 16 (step S44).

When the position information of the free area is passed from the free space determining means 12 ', the designated volume transfer means 13 transfers the file 2 to the transfer destination disk volume 3-1 as described above, and shows the transfer result. The message is passed to the transfer result notifying means 14 '. The transfer result notifying means 14 'displays the message passed from the designated volume transferring means 13 on the display device 5 to notify the user of whether the file transfer is normally completed or abnormally ended.

On the other hand, when the separate volume transfer means 16 is activated by the free space determination means 12 ', as shown in the flowchart of FIG. 8, the transfer of the first disk volume 3-1 designated by the file transfer instruction. It is determined whether it is the destination disk volume (steps S51 and S5).
2).

In the case of this example, the first disk volume 3-1 is the transfer destination disk volume instructed by the file transfer instruction, and the determination result of step S52 is YES, so the separate volume transfer means 16
It is determined whether the second disk volume 3-2 is the transfer destination disk volume designated by the file transfer instruction (steps S55, S5).
6, S52).

The second disk volume 3-2 is not the transfer destination disk volume instructed by the file transfer instruction, and the determination result in step S52 is NO. Therefore, the separate volume transfer means 16 operates the second disk volume 3-2. The size of the free area existing in the volume 3-2 is calculated (step S53), and then the size of the free area of the disk volume 3-2 calculated in step S53 is the transfer target file 2 acquired by the file size acquisition means 11.
It is determined whether the file size is equal to or larger than the file size (step S54).

When it is determined that the size of the empty area is equal to or larger than the file size (YES in step S54).
In S), the separate volume transfer means 16 transfers the file 2 to the free area of the disk volume 3-2 (step S58).

If the file transfer is successful (YES in step S59), another volume transfer means 16
Changes the directory of the second disk volume 3-2 to match the state after the transfer of the file 2 (step S60), and then transfers the transfer destination disk volume 3
-2 volume name and a message indicating that the file transfer has ended normally are passed to the transfer result notifying means 14 '.
(Step S61). The transfer result notifying means 14 'displays this message on the display device 5 to notify the user that the file transfer is normally completed.

If the file transfer fails (NO in step S59), the process in step S58 is executed again, and the file transfer is not successful even after executing the process in step S58 a predetermined number of times (step S59). Is N
O, YES at step S62) passes the message indicating that the file transfer has ended abnormally even if the alternative disk volume is used and the volume name of the alternative disk volume to the transfer result notifying means 14 '(step S6).
3). The transfer result notifying means 14 'displays this message on the display device 5 to notify the user that the file transfer has ended abnormally.

Further, the separate volume transfer means 16 can find a disk volume whose free area size is equal to or larger than the file size of the transfer target file 2 even if the above-mentioned processing is performed for all the disk volumes 3-1 to 3-n. If not (step S56 is YES), a message indicating that there is no disk volume to which the file 2 can be transferred is displayed on the display device 5.
(Step S57). When this message is displayed on the display device 5, the user again inputs the file transfer instruction after performing processing such as deletion of unnecessary files in the same manner as described above, for example.

[0058]

As described above, according to the present invention, when the transfer destination disk volume designated by the file transfer instruction does not have a free space corresponding to the file size of the transfer target file designated by the file transfer instruction, the file of the transfer target file is Equipped with a free volume notification unit that searches for another disk volume that has a free area equal to or larger than the size and outputs the volume name, even if the user does not manage the free space of each disk volume that the system has, the free volume Since the output of the notifying means makes it possible to know the disk volume having a sufficient free area for file transfer, file transfer failure due to insufficient free area of the transfer destination disk volume can be performed without imposing a burden on the user. Effect that can be prevented from being repeated many times A.

Further, according to the present invention, when the free volume notifying means cannot find a disk volume having a free area equal to or larger than the file size of the file to be transferred from a plurality of disk volumes provided in the system, it notifies the transfer result. Since the means outputs that fact to the output device, the user can take some action upon knowing that there is no disk volume to which the file can be transferred.

Further, according to the present invention, when the transfer destination disk volume instructed by the file transfer instruction does not have a free space corresponding to the file size of the transfer target file instructed by the file transfer instruction, a free area equal to or larger than the file size of the transfer target file is obtained. Since another volume transfer means for locating another disk volume having the above and transferring the transfer target file to that disk volume is provided, even when the free area of the disk volume for which the file transfer is instructed is smaller than the file size, There is an effect that files can be transferred to another disk volume without burdening the user.

Further, according to the present invention, when the separate volume transfer means cannot find a disk volume having a free area equal to or larger than the file size of the transfer target file from the plurality of disk volumes provided in the system, the fact is notified. Since the data is output to the output device, the user can know if the disk volume to which the file can be transferred does not exist in the system and take some action.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a flowchart showing a processing example of a file size acquisition means 11.

FIG. 3 is a flowchart showing a processing example of a vacancy judging means 12.

FIG. 4 is a flowchart showing a processing example of a designated volume transfer means 13.

FIG. 5 is a flowchart showing a processing example of an empty volume notifying unit 15.

FIG. 6 is a block diagram of another embodiment of the present invention.

FIG. 7 is a flowchart showing a processing example of a vacancy judging means 12 ′.

FIG. 8 is a flowchart showing a processing example of another volume transfer means 16.

[Explanation of symbols]

 1, 1 '... File transfer function unit 11 ... File size acquisition means 12, 12' ... Free space determination means 13 ... Designated volume transfer means 14, 14 '... Transfer result notification means 15 ... Free volume notification means 16 ... Separate volume transfer means 2 ... file 3 ... disk volume group 3-1 to 3-n ... disk volume 4 ... keyboard 5 ... display device

Claims (4)

[Claims] 1. A plurality of disk volumes, a file size acquisition unit for acquiring a file size of a transfer target file instructed by a file transfer instruction, and a file volume in the transfer destination disk volume instructed by the file transfer instruction. A free space determining unit that determines whether or not there is a free area in which a file having the file size acquired by the size acquiring unit can be transferred; and a file transfer instruction that is specified by the free space determining unit. The designated volume transfer means for transferring the transfer target file to the transfer destination disk volume instructed by the file transfer instruction, and the file among the plurality of disk volumes when the free space judgment means judges that the file does not exist. The size acquired by the size acquisition means Free volume notifying means for finding a disk volume having a free area equal to or larger than the file size and outputting the volume name to the output device, and transfer result notifying means for outputting the transfer result of the file transfer by the designated volume transfer means to the output device A file transfer method characterized by having and. 2. When the free volume notifying means is unable to find a disk volume having a free area equal to or larger than the file size acquired by the file size acquiring means from among the plurality of disk volumes, the output device notifies that fact. The file transfer method according to claim 1, wherein 3. A plurality of disk volumes, a file size acquisition unit for acquiring the file size of a transfer target file instructed by a file transfer instruction, and a file volume in the transfer destination disk volume instructed by the file transfer instruction. A free space determining unit that determines whether or not there is a free area in which a file having the file size acquired by the size acquiring unit can be transferred; and a file transfer instruction that is specified by the free space determining unit. The designated volume transfer means for transferring the transfer target file to the transfer destination disk volume instructed by the file transfer instruction, and the file among the plurality of disk volumes when the free space judgment means judges that the file does not exist. The size acquired by the size acquisition means Another volume transfer unit that searches for a disk volume having a free area equal to or larger than the file size and transfers the transfer target file to the disk volume; and, if file transfer is performed by the designated volume transfer unit, by the designated volume transfer unit. The transfer result is output to the output device, and when the file transfer is performed by the separate volume transfer means, the transfer result by the separate volume transfer means is output to the output device.
A file transfer method comprising: a transfer result notifying unit that outputs the volume name of a transfer destination disk volume to the output device when the transfer result is a normal end. 4. The transfer result notifying means, if the separate volume transfer means cannot find a disk volume having a free area larger than the file size acquired by the file size acquisition means from the plurality of disk volumes. The file transfer method according to claim 3, wherein the fact is output to the output device.