KR101088673B1 - System and method for operating client terminal - Google Patents

Abstract

PURPOSE: A system and a method for operating a client terminal are provided to effectively supply a disk in which an OS(Operating System) and application program are installed in a diskless client terminal as a virtual disk style. CONSTITUTION: A master image generator(210) generates a used mask image by sharing in the operation of a client terminal. An image modification information storage unit(220) stores the changed information of the master image per client terminal. A client image generator(230) generates a client image per client terminal based on the master image and the image information. An image information database(250) stores the master and client image. The client image is provided to a client terminal which is matched to the client image.

Description

System and method for operating client terminal {SYSTEM AND METHOD FOR OPERATING CLIENT TERMINAL}

The present invention relates to a client terminal operating system and method, and more particularly, a client for operating and managing a plurality of client terminals by providing a diskless client terminal with a virtual image in which an operating system (OS) and an application program are installed. It relates to a terminal operating system and method.

The use of personal computers in groups using local area networks (LANs), such as computer labs in universities, offices of large corporations and small businesses, as well as PC rooms, which are rapidly increasing in recent years, is increasing. In such cases, computer administrators find it difficult to keep personal computers optimal for use.

Intermittent hardware problems can be solved by replacing or repairing the system, but far more problems arise from software management. In particular, operating systems such as Microsoft Windows (MS-WINDOWS) have little user management compared to operating systems such as Linux or Unix, which makes computer management more difficult.

Personal computer users can change various computer system settings, change important files on the system, and install new software on the system. In such a case, the server managing personal computers effectively provided a disk environment for users to change and use various computers, but it was difficult to manage such changes effectively.

Furthermore, computer administrators have to reinstall system software or repair damaged files on a computer-by-computer basis, which requires a lot of time and effort.

On the other hand, as the first prior art, Korean Patent Publication No. 10-2003-0016909 discloses an invention entitled "Storage / Duplicate Apparatus and Method for Storing Computer System Images Using a Network". The present invention relates to a technology for storing and replicating a client computer system image connected to a server and simultaneously replicating a plurality of computer system images using a multicasting transmission technique.

However, the above-described first prior art is not a technology for a client computer without a disk, and it is not possible to efficiently provide a disk including an operating system and an application program to a plurality of client computers. There was a problem in that the virtual disk could not be provided to the client terminal by effectively reflecting the changed program information.

Accordingly, there is a strong demand for a client terminal operating technology capable of efficiently providing a virtual disk to a diskless client computer and effectively managing and updating a virtual disk that is variously used in the client computer.

Some embodiments of the present invention provide a client terminal operating system and method capable of effectively providing a diskless client terminal with a disk on which an operating system and application programs are installed.

In addition, an embodiment of the present invention, a client terminal operating system that can efficiently provide a disk to the client terminals, and reduce the load on the network, based on the master image shared and used in the plurality of client terminals; Provide a method.

In addition, an embodiment of the present invention provides a client terminal operating system and a method for providing a client image for each client terminal and flexibly updating and utilizing a master image based on the client image.

In addition, an embodiment of the present invention provides a client terminal operating system and method capable of effectively recovering a failure occurring in a terminal when a failure occurs in the use of the client terminal.

As a technical means for achieving the above-described technical problem, a first aspect of the present invention, the master image generating unit for generating a master image that is provided to a plurality of client terminals are shared and used to drive the plurality of client terminals, An image change information storage unit for storing information on a change usage of a master image for each client terminal, a client image generation unit generating a client image for each client terminal based on the master image and information on the image change usage; And an image information database for storing the generated master image and the generated client image, wherein the stored client image is provided to a client terminal matching the client image. Portion is the same as group master image can provide a client operation to a server providing a virtual disk of a plurality of the client terminals to be used in sharing by said plurality of client terminals.

In addition, the second aspect of the present invention, generating a master image of a virtual disk that is shared and used to drive a plurality of client terminals, providing the generated master image to the plurality of client terminals, the master image Collecting information about the change usage of each client terminal, generating a client image of the virtual disk for each client terminal based on the master image and the information on the image change usage, and the generated client image And providing the client terminal corresponding to the client image, wherein a part of the client image overlapping with the master image is shared and used by the plurality of client terminals. D It can provide the client operating method that provides greater.

In addition, a third aspect of the present invention, a disk recognition unit for recognizing a virtual disk of the client operating server to which the client terminal is connected, a data converter for converting the format of data transmitted and received between the client terminal and the client operating server, and And a cache storage unit configured to temporarily store the converted data, wherein the data includes information on a master image of a virtual disk shared and used for driving a plurality of client terminals, and information on the use of the image change in the client terminal. And a client image of a virtual disk generated for each of the client terminals, wherein a part of the client image overlapping with the master image is shared and used by the plurality of client terminals. It is possible to provide a bridging device which relays transmission and reception of the virtual disk image.

According to the above-described problem solving means of the present invention, it is possible to effectively provide a disk in which the operating system and the application program are installed in a virtual disk format to a client terminal without a disk.

In addition, according to the above-described problem solving means of the present invention, it is possible to generate a client image based on a master image shared and used in a plurality of client terminals, and effectively provide the generated client image to the client terminal.

In addition, according to one of the other problem solving means of the present invention, by providing a virtual disk to the client terminal through a separate bridge device, it is possible to reduce the load on the network.

In addition, according to one of the other problem solving means of the present invention, it is possible to elastically update and utilize the master image based on the client image.

In addition, according to one of the other problem solving means of the present invention, when a failure occurs in the use of the client terminal, it is possible to effectively recover the failure occurred in the terminal using the client image.

1 is an overall schematic diagram of a client terminal operating system according to an embodiment of the present invention.
2 is a detailed configuration diagram of the client operating server 200 according to an embodiment of the present invention.
3 is a detailed configuration diagram of the bridge device 300 according to an embodiment of the present invention.
4 is a diagram schematically illustrating an example of a method of generating a master image according to an embodiment of the present invention.
5 is a diagram schematically illustrating an example of a method of generating a client image according to an exemplary embodiment of the present invention.
6 is a diagram illustrating an example of a client image information table stored in an image information database 250 according to an embodiment of the present invention.
7 is a detailed flowchart of a method of operating a client terminal according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is "connected" to another part, this includes not only "directly connected" but also "electrically connected" with another element in between. . In addition, when a part is said to "include" a certain component, which means that it may further include other components, except to exclude other components unless otherwise stated.

In addition, in the present specification, the master image refers to a virtual disk image including an operating system (OS) and an application program, which are commonly used in client terminals, and are provided and shared with a plurality of client terminals. A part thereof refers to an image that can be changed and used by a client terminal.

In addition, in the present specification, the client image is a virtual disk image generated for each client terminal. When the master image is changed and used in the client terminal, the client image may be generated by reflecting the change for each client terminal. May be generated by a combination of an unchanged part and a part changed by the client terminal.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall schematic diagram of a client terminal operating system according to an embodiment of the present invention.

As shown in FIG. 1, a client terminal operating system according to an exemplary embodiment of the present invention includes a plurality of client terminals 100, a client operating server 200, a bridge device 300, and a network 400. Include.

As shown in FIG. 1, the client operating server 200 is connected to a plurality of client terminals 100 that do not include a disk through the network 400, and the operating system may be booted and driven. And a virtual disk image (for example, a master image, a client image, etc.) having various application software installed therein and provided to the client terminal 100.

The client terminals 100 which do not include the disk may access the client operating server 200 and share the master image with each other, and may modify and use a part of the master image such as adding a new application. In this case, the client operating server 200 may separately manage information on the portion of the master image modified by the client terminal 100, and may generate a client image and provide the generated client image to the client terminal 100. In addition, it is possible to elastically update the master image using the client image.

In addition, the client terminal 100 may access a client operating server 200 through a separate bridge device 300 to use a master image or a client image, and in this case, reduce the network load of the client operating server 200. You can.

The network 400 may be a wired or mobile radio or satellite communication network, such as a local area network (LAN), wide area network (WAN), or value added network (VAN). It can be implemented in all kinds of wireless networks such as.

The client operating server 200 according to an embodiment of the present invention provides a virtualized disk resource to the client terminal 100, and shares the virtual disks with each other using a deduplication technology, thereby efficiently sharing the disk resources of the server. It can be utilized. In addition, since the client operating server 200 may install an existing operating system and application program in the master image, the existing software may be utilized as it is, and the client terminal 100 may provide a client image for each client terminal 100. In the event of a software failure, the software can quickly respond and recover from failures in seconds. Detailed configuration of the client operating server 200 will be described in more detail with reference to FIG. 2.

Hereinafter, a detailed configuration of the client operating server 200 according to an embodiment of the present invention will be described with reference to FIG. 2.

2 is a detailed configuration diagram of the client operating server 200 according to an embodiment of the present invention.

As shown in FIG. 2, the client operating server 200 according to an exemplary embodiment of the present invention may include a master image generator 210, an image change information storage unit 220, a client image generator 230, and a master image. The updater 240 includes an image information database 250, a transceiver 260, and a controller 270.

The master image generator 210 generates a master image used in the plurality of client terminals 100. The master image refers to a virtual disk image including an operating system and an application program used in the client terminal 100.

The master image generator 210 may generate a virtual disk of a preset size and generate a master image by installing a preset operating system and an application in the generated virtual disk. For example, the master image generator 210 generates a virtual image primarily by generating a snapshot of a virtual disk created with a predetermined size, and is connected to the client operating server 200. An operating system and an application program may be installed on the virtual image through the client terminal 100, and a master image may be finally generated by generating a snapshot of the operating system and an application program. In addition, the master image generator 210 may generate a master image by installing the operating system and an application program on the virtual disk image, for example, based on a user input through a web browser.

The generated master image may be commonly used in the plurality of client terminals 100, and a part thereof may be changed and used individually by each client terminal 100. In this case, a portion of the master image that is not changed and used is commonly provided to each client terminal 100 through a deduplication technique, whereby the client operating server 200 can use disk space more efficiently. Will be.

The image change information storage unit 220 stores information about the change use of the master image when the master image is changed and used by the client terminal 100. The master image may be provided to the client terminal 100, and may be changed and used by each client terminal 100, and the image change information storage unit 220 may use information regarding the change use of the master image for each client terminal 100. Can be classified and stored.

For example, the master image may be used by the client terminal 100 such that the registry is changed, a new application is installed, or an existing application is deleted. In this case, the image change information storage unit 220 is used. The change of the master image may be stored in the image information database 250 to be described later for each client terminal 100.

In addition, when the master image is changed and used a plurality of times by the client terminal 100, the image change information storage unit 220 may classify and store the contents regarding the change use of the master image in chronological order.

The client image generator 230 generates a client image based on the master image and the information about the change usage of the master image. The client image is a virtual disk image generated for each client terminal. When the master image is changed and used in the client terminal, the client image is generated by reflecting the changed contents for each client terminal or when the client image is changed and used in the client terminal. The changes may be generated for each client terminal.

The client image generator 230 combines a portion of the master image that has not been changed by the client terminal 100 and change usage information that has been changed and used in the master image and generates a snapshot, thereby generating a client for each client terminal 100. You can create an image.

In addition, when the master image is changed and used by the client terminal 100 a plurality of times, the client image generator 230 may generate and update the client image whenever it is changed. Therefore, when the master image is changed and used a plurality of times in the client terminal 100, a plurality of client images corresponding thereto may be generated and stored.

The client image is provided to the client terminal 100 connected to the client operating server 200, and the diskless client terminal 100 may be used to effectively boot and drive. In addition, since the portion of the client image that is not changed by the client is shared with the other client terminal 100, the disk resource of the client operating server 200 may be efficiently managed.

In addition, the client operating server 200 provides a disk to the client terminal 100 when the software error occurs when driving the client terminal 100, the client operating without the need to repair the client terminal 100 By providing a client image in which the server 200 does not have an error, the server 200 may effectively recover the error of the client terminal 100.

The master image updater 240 updates the master image using the client image. The master image updater 240 may select at least one of the client terminals stored for each client terminal 100 to update the master image.

The master image updater 240 selects, for example, a client image having a high user evaluation, a client image in which an application program is optimized, or a client image in which operating system settings are optimized, among the stored client images. By setting the master image, the plurality of client terminals 100 can share it.

Therefore, according to an embodiment of the present invention, by freely reflecting the changed usage contents of the master image that is variously changed and used in the client terminal 100, the master image can be effectively updated, and the master image can be updated according to the situation. Can be flexibly updated and used.

The image information database 250 stores various kinds of information related to generation and update of a master image or a client image. In addition, the image information database 250 stores various information for providing the generated master image and client image to the client terminal 100. In addition, the image information database 250 stores the master image or the client image as a connection address (for example, a media access control (MAC) address of the client terminal 100, etc.) of the client terminal 100 corresponding thereto. Can be matched and stored.

The transceiver 260 generates a master image and a client image, and transmits and receives various information necessary for providing the generated master image or client image to the client terminal 100 with the client terminal 100.

The controller 270 controls the operation of the entire client operating server 200, and the client operating server 200 generates or updates a master image or a client image, and is generated to a client terminal connected to the client operating server 200. The master image generator 210, the image change information storage unit 220, the client image generator 230, the master image updater 240, the image information database 250, and the transceiver 260 to provide an image are provided. To control

Hereinafter, a detailed configuration of the bridge device 300 according to an embodiment of the present invention will be described with reference to FIG. 3.

3 is a detailed configuration diagram of the bridge device 300 according to an embodiment of the present invention.

As shown in FIG. 3, the bridge device 300 according to an embodiment of the present invention may include a disk recognition unit 310, a data converter 320, a cache storage unit 330, a transceiver 340, and a controller. It includes 350, and relays information transmission and reception between the client terminal 100 and the client operating server 200.

The disk recognition unit 310 recognizes a disk of the client operating server 200 to which the client terminal 100 is connected. The disk recognition unit 310 may recognize a virtual disk of the client operating server 200 corresponding to the client terminal 100 and connect the client terminal 100 to the recognized virtual disk.

The data conversion unit 320 converts the format of the data so that data can be transmitted and received between the client terminal 100 and the client operating server 200. The data converter 320 may convert a format of data provided from the client terminal 100 to the client operating server 200 and data provided from the client operating server 200 to the client terminal 100.

For example, the data conversion unit 320 receives a DISK I / O request signal from the client terminal 100, packs the received signal into a packet having a predetermined format, and transmits the received signal to the client operating server 200. It may be provided, and may be provided to the client terminal 100 by unpacking a signal received from the client operating server 200.

The cache storage unit 330 temporarily stores the data converted by the data converter 320. When the amount of data to be converted is large, the cache storage unit 330 temporarily stores the data, thereby loading the network load generated when the client terminal 100 accesses the client operating server 200 to use the virtual disk. I can alleviate it.

The cache storage unit 330 may use, for example, a solid-state drive (SSD), but is not limited thereto. The cache storage unit 330 may select at least one of a read-only cache and a write-only cache.

The transceiver 340 is connected to the client terminal 100 and the client operating server 200 to transmit and receive various information necessary for the connection between the client terminal 100 and the client operating server 200.

The control unit 350 controls the operation of the entire bridge device 300, the disk recognition unit 310 so that the bridge device 300 can relay information transmission and reception between the client terminal 100 and the client operating server 200, The data converter 320, the cache storage unit 330, and the transceiver 340 are controlled.

Hereinafter, an example of a master image generating method according to an embodiment of the present invention will be described with reference to FIG. 4.

4 is a diagram schematically illustrating an example of a method of generating a master image according to an embodiment of the present invention.

As shown in FIG. 4, in one embodiment of the present invention, the master image generator 210 generates a snapshot of a virtual disk created with a predetermined size and primarily generates a virtual image 40. The master image 46 may be finally generated by installing the operating system 42 and the application program 44 on the virtual image 40 and generating a snapshot thereof.

In addition, the master image 46 may be virtually duplicated and provided to the plurality of client terminals 100 connected to the client operating server 200, and the client terminal 100 shares the received master image 46. Will be used. In view of the client operating server 200, the master image is individually received from the client operating server 200 and used, and the client operating server 200 uses a plurality of master images 46 by using a deduplication technique. By providing to the client terminal 100 it is possible to efficiently use the storage resources in the server.

Hereinafter, an example of a client image generating method according to an embodiment of the present invention will be described with reference to FIG. 5.

5 is a diagram schematically illustrating an example of a method of generating a client image according to an exemplary embodiment of the present invention.

The master image 46 provided to the client terminal 100 may be variously changed and used in each client terminal 100. In this case, as illustrated in FIG. 5, the client image generator 230 may include a portion 48 of the master image that is not used by being changed by the client terminal 100 and a portion that is changed by the client terminal 100 ( By combining the 50 and 52 to create a snapshot, the client image 54 can be generated. The portions 50 and 52 changed by the client terminal 100 may include a registry modification portion, a program deletion portion, a program addition installation portion, and the like.

The client image 54 may be generated and stored for each client terminal 100 whenever the client terminal 100 changes the master image or the client image. Therefore, the master image or client image may be stored in the client terminal 100. When changed and used a plurality of times, a plurality of client images corresponding thereto may be generated and stored. In addition, the generated client image 54 may be provided to the client terminal 100 corresponding thereto, and may be used to recover an error when a software error occurs in the client terminal 100. In addition, the master image updater 240 may select an optimized image from among client images generated for each client terminal 100 and use it as a master image.

Like the master image, the client image 54 may be provided to the client terminal 100 through a virtual disk, and the rest of the client image 54, which is not changed by the corresponding client terminal 100, may be replaced with another client terminal ( 100).

Hereinafter, an example of a client image information table stored in the image information database 250 according to an embodiment of the present invention will be described with reference to FIG. 6.

6 is a diagram illustrating an example of a client image information table stored in an image information database 250 according to an embodiment of the present invention.

As shown in FIG. 6, the client image information table according to an embodiment of the present invention may include a client terminal field 60, a date field 62, a client image field 64, and a MAC address field 66. Can be.

The identification value of the client terminal 100 is recorded in the client terminal field 60, and the date of generating or updating the client image is recorded in the date field 62. In addition, the file name of the client image is recorded in the client image field 64, and the MAC address value of the client terminal 100 to provide the client image is recorded in the MAC address field 66.

Therefore, when the master image or the client image is changed and used in the client terminal 100, the client image reflecting the use of the change may be classified and stored by date and the client terminal 100. The stored client image may be used for later update of the master image or software error recovery of the client terminal 100. Furthermore, since the client image is stored together with the MAC address of the client terminal 100 provided, the client image can be effectively provided to the client terminal 100.

Hereinafter, a method of operating a client terminal according to an embodiment of the present invention will be described with reference to FIG. 7.

7 is a detailed flowchart of a method of operating a client terminal according to an embodiment of the present invention.

Step S700 is a step of generating a master image. In operation S700, a virtual disk of a preset size may be created, and a master image may be generated by installing a preset operating system and an application in the created virtual disk. In operation S700, for example, a virtual image may be primarily generated by generating a snapshot of a virtual disk having a predetermined size, and may include a client terminal connected to the client operating server 200. The operating system and the application program can be installed on the virtual image through 100), and a master image can be finally generated by generating a snapshot of the operating system and the application program.

Step S702 is a step of providing the generated master image to the client terminal 100. In operation S702, the generated master image may be virtually duplicated and provided to the plurality of client terminals 100, through which the plurality of client terminals 100 may share the master images.

Step S704 is a step of collecting deformation usage information of an image for each client terminal 100. In operation S704, when the master image is changed and used by the client terminal 100, information about the changed use of the master image may be collected. For example, the master image may be used by the client terminal 100, such as when the registry is changed, a new application is installed, or an existing application is deleted, in which case such changes of the master image are collected. And may be stored in the image information database 250.

Step S706 is a step of generating a client image. In operation S706, the client image may be generated based on the master image and the information about the changed use of the master image. In operation S706, the client image generator 230 combines a portion of the master image that has not been changed by the client terminal 100 and change usage information that has been changed and used in the master image and generates a snapshot, thereby generating a snapshot. You can create a client image for each).

Step S708 is a step of providing the generated client image to the client terminal 100. In operation S708, the generated client image may be virtually duplicated and provided to the plurality of client terminals 100, and an unchanged portion of the client image may be shared with other client terminals 100.

Thereafter, the provided client image may be changed by the client terminal 100. In this case, steps S704 and S706 may be repeated to generate a client image based on the changed information.

Therefore, when the client image is continuously changed and used by the client terminal 100 a plurality of times, the client image may be generated every time the client image is changed, and a plurality of client images may be generated and stored for each client terminal 100. Can be. This client image is provided to the client terminal 100 connected to the client operating server 200, the diskless client terminal 100 can be used to effectively boot and drive, further, the client terminal 100 In the case of a software error, in the case where a software error occurs, the client operating server 200 does not need to repair the client terminal 100, thereby providing a client image in which the error does not occur, thereby effectively The error of the client terminal 100 can be recovered.

Step S710 is updating the master image. In operation S710, the master image may be updated by selecting at least one of the client terminals stored for each client terminal 100. In step S710, for example, a client image having a high user evaluation, a client image installed with an optimized application program, or a client image optimized for setting of an operating system is selected from among the stored client images, and the selected client image is set as a master image. In this case, the plurality of client terminals 100 may share the same.

One embodiment of the present invention can also be implemented in the form of a recording medium containing instructions executable by a computer, such as a program module executed by the computer. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, computer readable media may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transmission mechanism, and includes any information delivery media.

The above description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily changed to other specific forms without changing the technical spirit or essential features of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. .

100: client terminal 200: client operating server
210: master image generation unit 220: image change information storage unit
230: client image generation unit 240: master image updating unit
250: image information database 260: transceiver
270: control unit 300: bridge device
400: network

Claims (14)

In the client operating server providing a virtual disk to a plurality of client terminals,
A master image generation unit provided to a plurality of client terminals to generate a master image shared and used to drive the plurality of client terminals;
An image change information storage unit for storing the information on the change use of the master image for each client terminal;
A client image generation unit generating a client image for each client terminal based on the master image and the information on the use of the image change; and
An image information database for storing the generated master image and the generated client image
Including;
The stored client image is provided to a client terminal that matches the client image, wherein a portion overlapping with the master image of the client image is shared and used by the plurality of client terminals, the client operating server.
The method of claim 1,
The master image generator,
Generating a virtual disk image to be used in the plurality of client terminals, and installing the operating system (OS) and application programs to be used in the plurality of clients in the generated virtual disk image, to generate the master image, client operation server.
The method of claim 2,
The master image generator,
And providing the generated virtual disk image to the client terminal, installing the operating system and the application program in the virtual disk image through an input of the client terminal, and generating the master image.
The method of claim 2,
The master image generator,
Based on user input via a web browser, installing the operating system and the application program in the virtual disk image and generating the master image.
The method of claim 1,
The client image generation unit,
Generating the client image for each of the client terminals by combining a portion of the master image that is not changed and used in the client terminal and the image change usage information;
Wherein the generated client image is used to recover a software error of a client terminal matching the client image.
The method of claim 1,
Master image updating unit for updating at least one of the generated client image to the master image
Further comprising a client operating server.
In the client operating method for providing a virtual disk to a plurality of client terminals,
Generating a master image of a virtual disk that is shared and used to drive a plurality of client terminals;
Providing the generated master image to the plurality of client terminals;
Collecting information on the modified use of the master image for each client terminal;
Generating a client image of a virtual disk for each client terminal based on the master image and the information on the image change usage, and
Providing the generated client image to a client terminal corresponding to the client image;
Including;
The overlapping part of the client image with the master image is shared and used by the plurality of client terminals, the client operating method.
The method of claim 7, wherein
Generating the master image,
Generating a virtual disk image to be used in the plurality of client terminals, and installing the operating system (OS) and application programs to be used in the plurality of clients in the generated virtual disk image, to generate the master image, client operation Way.
The method of claim 8,
Generating the master image,
And providing the generated virtual disk image to the client terminal, installing the operating system and an application program on the virtual disk image through an input of the client terminal, and generating the master image.
The method of claim 8,
Generating the master image,
Based on user input via a web browser, installing the operating system and the application program in the virtual disk image and generating the master image.
The method of claim 7, wherein
Recovering a software error of a client terminal matching the client image using the generated client image
More,
The generating of the client image may include generating the client image for each of the client terminals by combining a portion of the master image which is not used in the client terminal and the image change usage information.
The method of claim 7, wherein
Selecting at least one of the generated client images to update the master image
Further comprising, the client operating method.
A bridge device for relaying transmission and reception of a virtual disk image between a client terminal and a client operating server,
A disk recognition unit recognizing a virtual disk of a client operating server to which the client terminal is connected;
A data converter for converting a format of data transmitted and received between the client terminal and the client operating server, and
Cache storage unit for temporarily storing the converted data
Including,
The data includes a master image of a virtual disk shared and used for driving a plurality of client terminals, and a client image of a virtual disk generated for each client terminal based on information on the use of the image change in the client terminal. ,
The portion of the client image overlapping with the master image is shared and used by the plurality of client terminals.
The method of claim 13,
The client image generated for each client terminal is used to update the master image.

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