WO2011013891A1

WO2011013891A1 - Tree-structured network hard disk copy system based on linux

Info

Publication number: WO2011013891A1
Application number: PCT/KR2010/001932
Authority: WO
Inventors: 최승일; 문종범
Original assignee: 엑스투씨앤씨(주)
Priority date: 2009-07-28
Filing date: 2010-03-30
Publication date: 2011-02-03
Also published as: KR100928243B1

Abstract

The present invention relates to a Linux-based tree structure network hard disk copy system which is characterized by: saving data to a group which indicates the shortest response time after grouping sub PCs as the response evaluation which evaluates the response message arrival time from the sub PCs which pertains to a check parity transmission query from a main PC if data is saved to the sub PCs from the main PC which is one of the plural PCs connected to each other through a network; and classifying the rest of the sub PCs into at least two groups according to the arrival time in order to save the data from an upper group PC to a lower group PC sequentially. Therefore, the system is able to minimize data loss and lost time.

Description

Tree-based network hard disk copy system based on Linux

The present invention relates to a network hard disk copying system based on Linux, and more particularly, when a main PC connected to a network backs up stored data to a plurality of sub PCs, it minimizes wasted time and lost data. It is about a tree-based network hard disk copy system based on Linux.

The present invention relates to a network hard disk copy system of a tree structure based on Linux.

Conventionally, in order to copy a plurality of hard disks connected to a network, a separate hardware device is mounted on a main PC or a copy is performed using a special LAN card.

In addition, even if it is a purely software-only technology, it is based on Windows in terms of its use, and thus has a very slow copying speed or a very complicated connection structure.

One example is Norton Ghost, which sets up the main PC, creates an image of the main PC, sets up a cast server, and transfers it to the cast server using the archived image.

Since the prior art transmits to a connected client unconditionally in a multicast manner regardless of network conditions, there is a problem in that there is a problem in overall speed if there is a problem or a load PC on the network. As described above, when 50 clients are connected to the main PC and there is an abnormality in the performance of one client, there exists an obsolescence in which the time taken to copy or transfer the entire disk increases exponentially.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to backup the stored data stored in the main PC to one or more sub PCs, the main PC to increase the data transfer rate of the sub PCs; Determining in advance, removing the sub PCs whose data transfer rate does not reach the preset reference speed, creating a first group, and processing the stored data of the main PC to be copied to the sub PC of the first group, and storing the stored data of the main PC. Network hard disk copy based on Linux which speeds up the backup process by processing the first PC's sub PCs to copy the stored data of the main PC to the sub PCs where the stored data of the main PC is not copied. To provide a system.

In addition, another object of the present invention is a Linux-based tree hard disk based on Linux that can perform a 1: N hard copy regardless of the disk contents of a plurality of PCs connected on the network by the main PC adopts the Linux operating system To provide a copy system.

In addition, another object of the present invention is to backup the stored data stored in the main PC to one or more sub PCs, to divide the sub PCs into groups according to the performance of the sub PCs, and to perform the backup according to the ranking of the group Sub-PC can be efficiently executed by asking the user whether to execute the grouping task so as not to execute the grouping task when the task of separating into the group (hereinafter referred to as grouping task) is unnecessary. It is to provide a tree-based network hard disk copy system based on Linux that allows the data stored in the main PC to be copied to speed up the backup process.

In addition, another object of the present invention is to output the group information indicating the data copy speed of the plurality of sub PCs through the output of the sub PC, the user can easily find and work with a good PC, the user convenience To provide a tree-based network hard disk copy system based on Linux.

According to a feature of the present invention for achieving the above object, the present invention is a system for backing up data stored in the main PC to one or more sub-PCs,

If the main PC has already stored the response message arrival time for the check parity transmission of the sub PCs in the storage unit, it inquires whether to transmit the check parity to one or more sub PCs connected through the output unit, and checks the parity through the input unit. When receiving the response not to transmit the message, the sub-PCs which transmit the response message within the reference time by reading the response message arrival time for the check parity transmission of the sub-PCs stored in the storage unit are determined as the first group and the sub-group of the first group. Copy the stored data of the main PC to the PC and receive the response to send the check parity, or if the main PC does not already store the response message arrival time for the check parity transmission of the sub PCs in the storage, Generate and deliver to all sub PCs and respond to check parity from sub PCs And store the response message arrival time in the storage unit, check the time when the response message arrives, and determine the sub PCs that have transmitted the response message within the reference time as the first group, and then the main PC in the sub PC of the first group. The sub PCs which copy the stored data of the PC and fail to transmit the response message within the reference time are divided into two or more groups according to the arrival time of the response message. Generate all group information including identification information of all sub PCs connected to the PC and group information for each identification information, transfer all group information to all sub PCs connected to the main PC, and all sub PCs connected to the main PC When receiving the completion signal that copying data of the main PC is completed, the group information of the sub PC is output to each sub PC. The main PC for transmitting the group information to which the output signal; And when receiving the group information output signal from the main PC, extracting one's own group information from all the group information transmitted from the main PC, and generating one or more desktop images including the group information on the background screen and outputting the group information. It includes a sub PC.

Sub-PCs of the first group to which the stored data of the main PC are copied copy the stored data of the main PC to the sub-PCs which do not transmit the response message within the reference time using all group information received from the main PC. do.

Also, the main PC copies the stored data of the main PC to the sub PCs of the first group, and the sub PCs whose copy of the stored data has been copied by the main PC and the main PC are mainted to the sub PC of the lower group than the main PC. It is preferable to copy the stored data of the PC sequentially from the sub PC of the upper group among the sub PCs waiting to be copied.

Meanwhile, the main PC determines the sub PCs that have transmitted the response message within the reference time to be the sub PC of the first group, and the sub PCs that have transmitted the response message within the second set time to the sub PC of the second group. Determine the sub PCs that have transmitted the response message within the third set time as the sub PC of the third group, and determine the sub PCs that have transmitted the response message within the fourth set time as the sub PC of the fourth group. The sub PCs transmitting the response message within the fifth set time are determined as the sub PCs of the fifth group, and the sub PCs transmitting the response message within the sixth set time are determined as the sub PCs of the sixth group. The sub PCs having transmitted the response message within the seventh set time are determined as the sub PCs of the seventh group.

In this case, the reference time is a value smaller than the second setting time, the second setting time is a value smaller than the third setting time, the third setting time is a value smaller than the fourth setting time, and the fourth setting time. The time is a value smaller than the fifth set time, the fifth set time is a value smaller than the sixth set time, and the sixth set time is a value smaller than the seventh set time.

Meanwhile, the main PC and the one or more sub PCs adopt a Linux operating system.

The check parity may include: a flag bit for recording whether a normal or abnormal return of a response message is recorded; A parity bit in which identification information of each sub PC is recorded; And a storage bit in which test storage data is recorded, wherein the response message sent by the sub-PC having received the check parity is recorded in the flag bit of the received check parity, in the case of abnormal return, 0 is recorded and is normal return. Case 1 is preferably recorded.

According to the present invention as described above, in the present invention in the backup of the data stored in the main PC to one or more sub PCs, the main PC determines the data transfer rate of the sub PCs in advance, the data transfer rate is preset reference speed After removing the sub PCs which do not reach the sub PC, the first group is created and the stored data of the main PC is copied to the sub PC of the first group, and the sub PC of the first group where the stored data of the main PC is copied is the main PC. It is possible to provide a tree-based network hard disk copying system based on Linux that speeds up the backup process by processing the stored data of the main PC to be copied to a sub PC that has not been copied.

In addition, the present invention provides a tree-based network hard disk copying system based on Linux capable of making 1: N hard copies regardless of the contents of the disks of a plurality of connected PCs on the main PC by adopting the Linux operating system. Can provide.

In addition, in the present invention, when storing data stored in the main PC to one or more sub PCs, the sub PCs are divided into groups according to the performance of the sub PCs, and the backup is performed according to the ranking of the groups. If the grouping task is not necessary (hereinafter referred to as grouping task), the user is asked whether the grouping task is executed so as not to execute the grouping task, and the grouping task is performed according to the query result. It is possible to provide a tree-based network hard disk copy system based on Linux that allows the stored data to be copied to speed up the backup process.

In addition, the present invention outputs the group information indicating the data copy speed of a plurality of sub PCs through the output of the sub PC through the user can easily find a good PC to work with the Linux-based to provide convenience to the user A network hard disk copy system having a tree structure can be provided.

1 is a block diagram showing the internal structure of a tree-based network hard disk copying system based on Linux according to a preferred embodiment of the present invention.

2 is a flowchart illustrating an operation of a tree-based network hard disk copying system based on Linux according to a preferred embodiment of the present invention.

3 is a flowchart illustrating a detailed operation of S180 of FIG. 2.

4 is an explanatory diagram for explaining how a network hard disk copy system of a tree structure based on Linux according to an embodiment of the present invention operates.

Explanation of symbols on the main parts of the drawings

100: main PC 200: sub PC

Hereinafter, a preferred embodiment of a tree-based network hard disk copying system based on Linux according to the present invention as described above will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the present invention includes a main PC 100 and one or more sub PCs 200 connected through a network.

The main PC 100 includes one or more sub PCs 200 connected to the main PC 100 through an output of the main PC 100 when a response message arrival time for the check parity transmission of the sub PCs is already stored in the storage unit. Requesting to send check parity to the mobile station and receiving a response to transmit check parity as a result of the query through the input unit of the main PC 100, or the main PC has already received a response message for transmitting the check parity of the sub PCs to the storage unit. If the time is not stored, a check parity is generated and transmitted to all sub PCs 200.

At this time, the check parity is a means for determining how fast the sub PC can perform the backup. Since it is inefficient to transmit the check parity every time the backup is performed, inquire the operator in advance and check the parity according to the query result. It is desirable to send it.

According to the above, it is not necessary to transmit the check parity (for example, a situation where the performance of the sub PCs has been checked by sending the check parity an hour ago, etc.). There are advantages to it.

Meanwhile, when the main PC 100 inquires whether the main PC transmits check parity to one or more sub-PCs connected through the output unit, and receives a response not to transmit the check parity through the input unit, the main PC 100 stores the stored data in the storage unit. By reading the response message arrival time for the check parity transmission of the sub PCs, the sub PCs which transmit the response message within the reference time are determined as the first group, and the stored data of the main PC is copied to the sub PCs of the first group.

When the main PC 100 transmits check parity to the sub PC 200 connected to the main PC 100, the main PC 100 receives a response message for the check parity from the sub PCs 200. The sub PC 200 storing the time when the response message arrives, checks and transmits the response message within the reference time is determined as the first group, and the main PC 100 is connected to the sub PC 200 of the first group. Process the stored data to be copied.

In addition, the main PC 100 separates the sub-PCs which do not transmit the response message within the reference time into two or more groups according to the arrival time of the response message, and the main PC 100 is divided into the upper group as the arrival time of the response message is earlier. All group information including identification information (for example, IP address of the sub PC) of all sub PCs 200 connected to the PC 100 and group information for each identification information (for example, group information for each IP address of the sub PC). It generates and transmits all group information to all sub PCs 200 connected to the main PC, and completes the completion signal indicating that copying of the stored data of the main PC is completed from all sub PCs 200 connected to the main PC 100. If received, it transmits a group information output signal for outputting its own group information to each sub PC.

In this case, the check parity includes a flag bit for recording whether a normal or abnormal return of a response message is recorded, a parity bit for recording identification information of each sub PC, and a storage bit for storing test storage data. In the response message sent by the sub-PC receiving the message, 0 is recorded in the flag bit of the received check parity and 1 is recorded in the case of normal return.

More specifically, the check parity consists of 32 bits in total, the flag bit area is 1 bit, the parbit bit area is 15 bits, and the test storage data area is 16 bits.

Meanwhile, the sub PCs 200 may be grouped by time for sending a response message to the main PC 100. At this time, the sub PC 200 of the first group, to which the stored data of the main PC 100 is copied, fails to transmit the response message within a reference time by using all group information received from the main PC 100. The stored data of the main PC 100 is copied to the PC 200.

That is, the main PC 100 performs the primary transmission based on the PCs having the most network efficiency (e.g., the sub PCs of the first group in this embodiment) when copying data on the corresponding network. The PCs (e.g., sub-PCs of the first group in this embodiment) that have received the copied data become main PCs again and perform multi-dimensional transmissions for secondary transmission.

Meanwhile, the sub PCs that do not transmit the response message within a reference time may be divided into two or more groups.

In this case, the main PC 100 determines that the sub PCs that have transmitted the response message within the reference time are the sub PCs of the first group, and the sub PCs that have transmitted the response message within the second set time of the second group. The sub PCs determined as the sub PC, the sub PCs having transmitted the response message within the third set time are determined as the sub PC of the third group, and the sub PCs having transmitted the response message within the fourth set time Determine that the sub PCs having transmitted the response message within the fifth set time are the sub PCs of the fifth group, and determine the sub PCs having transmitted the response message within the sixth set time as the sub PCs of the sixth group. The sub PCs having transmitted the response message within the seventh set time are determined as the seventh group of sub PCs, and all group information of the sub PCs is transmitted to each sub PC.

In this case, the reference time is a value smaller than the second set time, the second set time is a value smaller than the third set time, the third set time is a value smaller than the fourth set time, and the fourth set time. Is a value smaller than the fifth set time, the fifth set time is a value smaller than the sixth set time, and the sixth set time is a value smaller than the seventh set time.

Then, the main PC 100 processes the stored data of the main PC to be copied to the sub PCs of the first group, and the sub PCs whose copy of the stored data has been copied by the main PC and the main PC are subgroups of the subgroups rather than the sub PCs. Process the data stored in the main PC to be copied to the PC, but copy sequentially from the sub PC of the upper group among the sub PCs waiting to be copied.

As an example, there will be one main PC 100 and 10 sub PCs 200 to help understand the description. The main PC 100 sets the sub PC sending a response message within 0.3 seconds as the first group, the sub PC sending a response message within 0.5 seconds as the second group, and the sub PC sending a response message within 0.7 seconds. Setting as a third group will be described as an example.

The main PC 100 generates and transmits check parity to ten sub PCs 200 connected to a network. At this time, the ten sub PCs 200 having received the check parity transmit a response message for the check parity to the main PC 100.

The main PC 100 retrieves the arrival time of response messages transmitted from the sub PCs 200. As a result, PC1, PC2, and PC3 three sub-PCs responded within 0.3 seconds, PC4, PC5, PC6, and PC7 responded within 0.5 seconds, and PC8, PC9, and PC10 responded within 0.7 seconds. Sent.

Then, the main PC 100 determines three sub PCs of PC1, PC2, and PC3 as the first group, and judges four sub PCs of PC4, PC5, PC6, and PC7 as the second group, and PC8, PC9, PC10 3 The large sub PCs are determined as the third group. The entire group information is then transmitted to each sub PC (PC1 to PC10 in this example). At this time, all group information includes identification information of PCs and group information for each identification information. In this embodiment, "PC1: IP: 100.10.10-first group, PC2: IP: 100.10.11-first group" , PC3: IP: 100.10.12-first group, PC4: IP: 100.10.13-second group, PC5: IP: 100.10.14-second group, PC6: IP: 100.10.15-second group, PC7 : IP: 100.10.16-second group, PC8: IP: 100.10.17-third group, PC9: IP: 100.10.18-third group, PC10: IP: 100.10.19-third group " .

Subsequently, the main PC 100 processes the stored data of the main PC to be copied to the first group of sub PCs (PC1, PC2, PC3 in this example). After a predetermined time has elapsed, the first group of sub PCs (in this example, PC1, PC2, and PC3) and the main PC 100, which have been copied by the main PC 100, have a lower group than themselves (in this example, The stored data of the main PC is copied to the sub PC of the second group and the third group).

At this time, processing is performed to sequentially copy from the sub PC of the upper group among the sub PCs waiting to be copied. That is, the sub PCs (PC1, PC2, PC3 in the present example) and the main PC 100 of the copied first group copy the stored data to the sub PCs of the second group or the third group, which are their subgroups. Can be executed, but the second group, which is the upper group of waiting sub PCs, is executed first.

Then, the main PC 100 and the copied subgroup of the first group (PC1, PC2, PC3 in this example) are subgroups of the second group (PC4, PC5, PC6, PC7 in this example). Copy the saved data to.

Thereafter, the stored data is copied to the sub PC (PC8, PC9, PC10 in this example) that the PC which has completed the copying operation of the stored data is waiting to be copied.

For example, when the main PC 100, PC1, and PC3 have finished copying, the main PC 100, PC1, and PC3 copy the stored data to PC8, PC9, and PC10 of the third group waiting to be copied, respectively.

As described above, it is possible to quickly detect and respond to load, data loss, or speed drop on the network, and it is safer and faster to copy data than the conventional transmission method, such as multicast or broadcast. have. In addition, there is an advantage that the data loss rate on the network can be analyzed in order to minimize the loss due to data interference that may appear during data transmission on the network.

In this case, it is preferable that the main PC 100 and the at least one sub PC 200 adopt a Linux operating system.

When the main PC 100 receives a completion signal indicating that copying of the stored data of the main PC 100 is completed from all the sub PCs 200 connected to the main PC 100, the output unit of each sub PC 200 is output. The group information output signal is transmitted to cause group information of the sub PC 200 to be output.

When the sub PC 200 receives the group information output signal from the main PC 100, the sub PC 200 extracts its own group information from all the group information received from the main PC 100, and then outputs the group information to the output unit of the sub PC 200. Creates and prints a desktop image that contains your group information on the desktop. The group information is output through the output of the sub PC 200 is illustrated in FIG. 4.

As described above, when the group information of each sub PC 200 is output through the output unit, the user can easily select and work with a PC having a high group information, that is, a high-performance PC among the plurality of sub PCs 200. There is this. When the group information of the sub PC 200 is output to the output unit as described above in the space where the plurality of sub PCs 200 are located, the performance is limited to the user who has come to the space having the plurality of sub PCs 200 quickly. It has the advantage of providing a good PC. That is, outputting group information through the output unit means forcibly outputting the group information on the desktop, and the user can determine the performance of each PC by viewing the group information output on the desktop.

Hereinafter, an operation process of a tree-based network hard disk copy system based on Linux will be described in detail with reference to the accompanying drawings.

FIG. 2 is a flowchart illustrating an operation process of a network hard disk copy system of a tree structure based on Linux according to an exemplary embodiment of the present invention, and FIG. 3 is a detailed operation process of S180 of FIG. Flowchart is shown.

* Referring to FIG. 2, first, the main PC 100 loaded with the Linux core is booted in a network environment connected by the same hub or switch, and the booted main PC 100 is connected to the sub PC 200. Wait for In this case, the one or more sub PCs 200 boot using PXE or a booting CD ROM provided by itself. Then, the main PC 100 detects one or more booted sub PCs 200, and then the main PC 100 and one or more sub PCs 200 start communication (step S100).

*

* Then, the main PC 100 checks various options of the stored data to be copied to one or more sub PCs 200 (e.g., copying between disks, copying by partition, copying through a pre-made image, etc.) The transmission preparation step is entered (step S110).

Subsequently, when the arrival time of the response message for the check parity transmission of the sub PCs is already stored in the storage unit of the main PC 100, the main PC 100 is connected to the main PC 100 through the output unit of the main PC 100. It is queried whether one or more connected sub PCs 200 transmit check parity (step S115).

When the main PC 100 receives the response that the main PC 100 does not transmit the check parity, the main PC 100 reads the response message arrival times of the sub PCs stored in the storage unit and transmits the response message within the reference time. The sub PCs are determined as the first group, and the stored data of the main PC is copied to the sub PCs of the first group.

On the other hand, as a result of the query in step S115, the main PC 100 receives a response to transmit the query result check parity through the input unit of the main PC 100 or the main PC 100 has already checked the sub PCs in the storage unit. If the response message arrival time for the parity transmission is not stored, the check parity is generated and continuously transmitted to one or more sub PCs 200. At this time, the check parity includes a flag bit for recording whether the response message is returned normally or abnormally, a parity bit for recording identification information of each sub PC, and a storage bit for recording test data (step S120). .

The main PC 100 receives the response message for the check parity from the one or more sub PCs 200 and checks and stores the arrival time of the response message (step S140).

At this time, the main PC 100 extracts the sub PC transmitting the response message within the reference time and determines the first group by using the response message arrival time obtained in step S140 (step S150). At this time, in the response message, it is preferable to record 0 in the case of abnormal return and 1 in the case of normal return in the flag bit of the received check parity.

Thereafter, the main PC 100 copies the stored data of the main PC to the sub PCs belonging to the first group (step S170). When the stored data of the main PC 100 is copied to the sub PC of the first group by step S170, the stored data of the main PC is copied to the sub PC which the sub PC of the first group did not transmit the response message to within the reference time. do.

That is, the main PC 100 transmits and receives a check parity and response message between the main PC 100 and the one or more sub PCs 200, and when the reception rate of the specific sub PC 200 falls below a preset reference value (for example; Here, the reception rate may be determined as the arrival time of the response message), and the sub PC 200 is excluded from the backup work target, and data transmission is performed from the time when the work is stopped by another sub PC 200 after the work is completed. It can be resumed.

Meanwhile, the sub-PCs which fail to transmit the response message within the reference time may be separated into two or more groups by the determining step of step S150 (step S180).

Referring to FIG. 3, the step S180 will be described in detail. The main PC 100 determines the sub PCs that transmit the response message within the reference time as the sub PC of the first group, and the main PC 100 responds with the response message. Is determined as the sub PCs of the second group (step S181, step S182), and the sub PCs that the main PC 100 transmits the response message within the third set time are determined as the third PCs. It is determined as a sub PC of the group (steps S184 and S185), and the sub PCs which have transmitted the response message within the fourth set time by the main PC are determined as the sub PCs of the fourth group (steps S187 and S188). The main PC 100 determines the sub PCs that have sent the response message within the fifth set time as the sub PC of the fifth group (steps S190 and S191), and the main PC 100 sets the response message as the sixth set time. The sub PCs transmitted in the subframe are determined as the sub PCs of the sixth group (steps S193 and S194). The sub PCs that have transmitted the response message within the seventh set time are determined as the sub PCs of the seventh group (steps S196 and S197), and the main PC 100 displays all subgroup information of the sub PCs. To transmit.

In this case, the reference time is a value smaller than a second set time, the second set time is a value smaller than a third set time, and the third set time is a value smaller than a fourth set time, and the fourth set time. Is a value smaller than the fifth set time, the fifth set time is a value smaller than the sixth set time, and the sixth set time is a value smaller than the seventh set time.

On the other hand, the main PC processes the stored data of the main PC to be copied to the sub PC of the first group based on the all group information, and thereafter, the main PC and the sub PC of the first group which has been copied are transferred to the sub PC of the first group. Based on the group information, the stored data of the main PC is copied to the sub PCs of the second to seventh groups. At this time, it is preferable to sequentially copy from the sub PC of the upper group among the sub PCs waiting to be copied.

Then, the main PC and the sub-PCs of the copied first group and the second group process the stored data of the main PC to be copied to the sub PCs of the third to seventh groups based on the all group information (step S183). ). Similarly, it is preferable to sequentially copy from the sub PC of the upper group among the sub PCs waiting to be copied.

Further, the main PC and the sub PCs of the first group, the second group, and the third group that have been copied are copied to the sub PCs of the fourth to seventh groups based on the all group information. Process (step S186). Similarly, it is preferable to sequentially copy from the sub PC of the upper group among the sub PCs waiting to be copied.

Thereafter, the main PC and the sub-PCs of the first group, the second group, the third group, and the fourth group which have been copied are stored in the sub PCs of the fifth to seventh groups based on the all group information. The data is processed to be copied (step S189). Similarly, it is preferable to sequentially copy from the sub PC of the upper group among the sub PCs waiting to be copied.

The main PC and the sub-PCs of the first group, the second group, the third group, the fourth group, and the fifth group, which have been copied, are connected to the sub PCs of the sixth or seventh group based on the all group information. The stored data of the PC is copied (step S192). It is preferable to sequentially copy from the sub PC of the upper group.

Finally, the main PC and the sub-PCs of the first group, the second group, the third group, the fourth group, the fifth group, and the sixth group which have been copied are based on the all group information, and the sub PC of the seventh group. The stored data of the main PC is copied so as to be copied (step S195).

Subsequently, when the main PC 100 receives a completion signal indicating that copying of the stored data of the main PC 100 is completed from all sub PCs 200 connected to the main PC 100 (step S200), each sub PC ( The group information output signal for outputting the group information thereof to the output unit 200 is transmitted (step S210).

When the sub PC 200 receives the group information output signal from the main PC 100, the sub PC 200 extracts its own group information from all the group information received from the main PC 100, and outputs the group information to the output unit of the sub PC 200. A desktop image including its own group information on the desktop is generated and output (step S220). The group information is output to the output unit of the sub PC 200 is illustrated in FIG. 4.

As described above, the user can easily select and work with a sub PC having good performance in a space where a plurality of sub PCs 200 are installed.

In addition, the present invention has the advantage of minimizing wasted time or lost data when performing data copy on the network by the above-described method.

Table 1 shows the function comparison table of the present invention and the existing products (ghost, ribboncap Max) when copying the stored data. [Table 1] is an example of data transmission based on 10G practical use among 200G hard of 50 labs with a copy speed of P4.

Table 1

	Invention	ghost	Ribbon Cap Max
Base OS	Linux	Windows / Dos	Windows / Dos
Solution configuration	S / W	S / W	H / W
Copy MBR Disk	support	Not supported	Not supported
Copy speed	8 minutes	20 minutes	1 hour 30 minutes
Environment setting method	Simple (almost none)	Configuration time required	HW installation required
SPEED TEST	support	Not supported	Not supported
Copy failure rate	Very low	usually	height

As shown in [Table 1], the present invention can support all types of LAN cards without a separate setting because the connection method between the main PC and one or more server PCs uses Linux core, and similar products of other companies (ghost, Compared with RibbonCab Max), there is less time wasted and there is an advantage of minimizing lost data.

The rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and a person skilled in the art can make various modifications and adaptations within the scope of the claims. It is self-evident.

Claims

In the system for backing up data stored in the main PC to one or more sub PCs,

If the main PC has already stored the response message arrival time for the check parity transmission of the sub PCs in the storage unit, inquires whether to transmit the check parity to one or more sub PCs connected through the output unit, and checks the parity through the input unit. When receiving the response not to transmit the message, the sub-PCs which transmit the response message within the reference time by reading the response message arrival time for the check parity transmission of the sub-PCs stored in the storage unit are determined as the first group and the sub-group of the first group. Copy the stored data of the main PC to the PC and receive the response to send the check parity, or if the main PC does not already store the response message arrival time for the check parity transmission of the sub PCs in the storage, Create and deliver to all sub PCs and respond to check parity from sub PCs And store the response message arrival time in the storage unit, check the time when the response message arrives, and determine the sub PCs that have transmitted the response message within the reference time as the first group, and then the main PC in the sub PC of the first group. The sub PCs which copy the stored data of the PC and fail to transmit the response message within the reference time are divided into two or more groups according to the arrival time of the response message. Generate all group information including identification information of all sub PCs connected to the PC and group information for each identification information, transfer all group information to all sub PCs connected to the main PC, and all sub PCs connected to the main PC When receiving the completion signal that copying data of the main PC is completed, the group information of the sub PC is output to each sub PC. The main PC for transmitting the group information to which the output signal; And

When the group information output signal is received from the main PC, one or more subs which extract their own group information from all the group information received from the main PC and generate and output a background image including the group information on the background screen are outputted. PC;

The sub-PC of the first group, to which the stored data of the main PC is copied, copies the stored data of the main PC to the sub-PC which failed to transmit the response message within a reference time by using all group information received from the main PC. Linux-based tree hard disk copy system based on Linux.
The method of claim 1,

The main PC copies the stored data of the main PC to the subgroups of the first group, and the sub PCs whose copy of the stored data has been copied by the main PC and the main PC are located in the sub PC of the subgroup rather than the main PC. Linux-based network hard disk copy system, characterized in that to copy the stored data from the sub-PC of the upper group of the sub-PC waiting to copy sequentially.
The method of claim 1, wherein the main PC,

Sub PCs that have transmitted the response message within a reference time are determined as sub PCs of a first group,

Sub PCs that have transmitted the response message within a second set time are determined as sub PCs of a second group,

Sub PCs that have transmitted the response message within a third set time are determined as sub PCs of a third group,

Determining the sub PCs transmitted within the fourth set time to the response message as a sub PC of the fourth group,

Sub PCs that have transmitted the response message within a fifth set time are determined as sub PCs of a fifth group,

Determining the sub PCs having transmitted the response message within the sixth set time as the sub PCs of the sixth group;

And a sub-PC of the seventh group as the sub-PCs transmitted in the seventh set time.
The method of claim 3,

The reference time is a value smaller than the second set time,

The second set time is a value smaller than the third set time,

The third set time is a value smaller than the fourth set time,

The fourth set time is a value smaller than the fifth set time,

The fifth set time is a value smaller than the sixth set time,

And the sixth setting time is less than the seventh setting time.
The method of claim 1,

And said main PC and said at least one sub PC adopt a Linux operating system.
The method of claim 1,

The check parity is,

A flag bit for recording whether a normal or abnormal return of the response message is recorded;

A parity bit in which identification information of each sub PC is recorded; And

A storage bit in which test storage data is recorded;

The response message sent by the sub-PC receiving the check parity is written in the flag bit of the received check parity, 0 in case of abnormal return and 1 in case of normal return. Structure network hard disk copy system.