JP2011134219A - User environment saving control system, device, method and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce connection time as well as to reduce cost in use of a virtual desktop environment. <P>SOLUTION: The user environment saving control system for saving user environment information for attaining a virtual desktop environment for each user on a virtual PC includes: a priority determination means which determines a user-based priority; a virtual PC search means which searches, according to the priority determined by the priority determination means, a virtual PC that is a saving object of the user environment information from virtual PCs assigned by a virtual PC assignment server; and a user environment information saving control means which causes, based on the search result of the virtual PC search means, the virtual PC assignment server to save the user environment information retained by use of a cache from the cash. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a user environment save control system, a user environment save control device, a user environment save control method, and a user environment save control program that perform save control of user environment information when using a virtual desktop environment.

  A technique called a thin client is used in which a client terminal used by a user performs a minimum necessary process and concentrates other processes on the server side. For example, Patent Document 1 describes a thin client system in which a session management server including a connection destination setting table and a connection state management table is provided between a thin client server and a thin client terminal. In the sink line ant system described in Patent Document 1, an automatic connection to a thin client server according to the purpose, resumption of work by reconnection of a session, and an operating system on the thin client server side without the user being aware It is possible to start and shut down (hereinafter simply referred to as OS).

  In addition, as one of the methods for realizing a thin client, a virtual PC method for realizing a virtual processing system in software is used.

JP 2007-334686

  Recently, as Desktop as a Service (DaaS) is demanded, the applicant has proposed a system such as Virtual PC Center as a thin client system using the virtual PC method. However, in such an existing virtual PC type thin client system (a system that realizes a Virtual Desktop Infrastructure (VDI environment)), the system configuration is complicated and the equipment cost increases, so the service cost tends to increase. is there. Therefore, it is required to reduce facility costs (hardware and software costs) and operation costs.

  In addition, in the existing system described above, it is necessary to hold a virtual PC area for each user. In the virtual PC area, an OS, an application (hereinafter simply referred to as AP), and data (user data) for each user. A complete set is stored. Therefore, expensive high-speed storage equipment (SAN: Storage Area Network) is required in terms of equipment, and management for each environment, such as for each tenant or each user, is also required, and the operation cost is expected to increase.

  On the other hand, “Desktop virtualization” products (virtual desktop systems) such as vDesk provided by RingCube have been proposed as solutions to the above-mentioned cost problems to some extent. In such a virtual desktop system, it is possible to separate the management of the OS from the management of the AP and data by realizing a desktop virtualization client on the OS and linking with the desktop virtualization server. There are advantages.

(1) Since personal settings are not included in the OS, there is no need to create a virtual PC area for each individual user. Therefore, it is not necessary to consider the number of virtual PCs to be managed as the total number of users, and it is sufficient to consider the number of simultaneous connections that are currently connected among all users. Etc. can be reduced

(2) In the management cost of applying OS patches, it is not necessary to consider the environment for each individual user, and the OS can be managed collectively. This makes it easy to handle all users.

  However, in the virtual desktop system as described above, by separating the information that realizes the user environment (hereinafter also referred to as user environment information. Specifically, AP and data) and the OS, an actual PC (virtual PC) Compared to an environment using a physical PC instead of a PC, the start-up time (connection time) may be delayed, which is an issue. That is, since the user environment information AP and data are stored in a storage separate from the OS, it is necessary to download the user environment information (AP and data) from the storage to the OS side every time the user makes an RDP connection to the OS. is there. Therefore, in the VDI environment as described above, it takes a long time to connect as compared with an environment using an actual PC, and convenience may be impaired.

  In order to improve the connection time problem as described above, it is conceivable to hold user environment information using a cache. However, always saving user environment information is the same as creating a virtual PC area for each individual user, and there is no cost reduction effect, meaning that OS management and user environment information management are separated. Will disappear.

  Therefore, the present invention provides a user environment evacuation control system, a user environment evacuation control apparatus, a user environment evacuation control method, and a user environment evacuation control program that can reduce the cost of using a virtual desktop environment and reduce the connection time. The purpose is to provide.

  A user environment evacuation control system according to the present invention is a user environment evacuation control system for evacuating user environment information for realizing a virtual desktop environment for each user on a virtual PC, and a priority for determining a priority for each user. A virtual PC search means for searching for a virtual PC to be saved as user environment information among virtual PCs assigned by the virtual PC assignment server according to the priority determined by the priority determination means; The virtual PC allocation server is provided with user environment information save control means for saving user environment information held using a cache from the cache based on a search result of the PC search means.

  A user environment evacuation control apparatus according to the present invention is a user environment evacuation control apparatus that evacuates user environment information for realizing a virtual desktop environment for each user on a virtual PC, and assigns virtual PCs according to priority for each user. Of the virtual PCs allocated by the server, a virtual PC search unit that searches for virtual PCs to be saved as user environment information, and a cache is used for the virtual PC allocation server based on the search result of the virtual PC search unit And user environment information saving control means for saving the user environment information held in the cache from the cache.

  A user environment evacuation control method according to the present invention is a user environment evacuation control method for evacuating user environment information for realizing a virtual desktop environment for each user on a virtual PC, and determines and determines a priority for each user. In accordance with the priority, the virtual PC allocated by the virtual PC allocation server is searched for a virtual PC that is a target for saving user environment information, and based on the search result of the virtual PC that is a target for saving user environment information, The virtual PC allocation server saves user environment information held using a cache from the cache.

  A user environment saving control program according to the present invention is a user environment saving control program for saving user environment information for realizing a virtual desktop environment for each user on a virtual PC. Based on the search result of the virtual PC that is the target of saving user environment information and the search result of the virtual PC that is the target of saving user environment information, among the virtual PCs assigned by the virtual PC allocation server according to priority This is for causing the virtual PC allocation server to execute processing for saving the user environment information held using the cache from the cache.

  According to the present invention, it is possible to reduce the cost when using the virtual desktop environment and reduce the connection time.

It is a block diagram which shows the structural example of a general virtual desktop system. It is a block diagram which shows the structural example of the virtual desktop system using the user environment evacuation control method by this invention. It is explanatory drawing which shows the example of the session management table which a session management server memorize | stores. It is a functional block diagram which shows the function structural example of a session management server. It is explanatory drawing which shows the example of the priority management table which a priority determination server memorize | stores. It is a functional block diagram which shows the function structural example of a priority determination server. It is a state machine diagram for demonstrating the process example which a session management server performs. It is explanatory drawing which shows the example of the session management table after clearing. It is explanatory drawing which shows the example of the priority management table after an update. It is explanatory drawing which shows the example of the session management table after an update. It is explanatory drawing which shows the example of the determination method of a priority. FIG. 10 is a state machine diagram for explaining an example of processing executed by a session management server according to the second embodiment. It is a block diagram which shows the minimum structural example of a user environment evacuation control system.

Embodiment 1. FIG.
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. The virtual desktop system using the user environment evacuation control method according to the present invention caches user environment information as a workaround in order to solve the problem that the connection time that occurs when the virtual desktop system is adopted in a VDI environment. It controls to hold using. In addition, when configured to retain user environment information in this way, prioritize the selection of user environment information to be saved based on information such as the user's work status, work schedule, job title, etc. Control to save user environment information.

  First, a configuration example of a general virtual desktop system will be described. FIG. 1 is a block diagram illustrating a configuration example of a general virtual desktop system. As shown in FIG. 1, the virtual desktop system includes a thin client 100, a session management server 200, a virtual PC server 300, and a desktop virtualization server 500. The thin client 100, the session management server 200, the virtual PC server 300, and the desktop virtualization management server 500 are connected via a communication network such as the Internet.

  The session management server 200 includes a session management table 210 for managing a session established between the thin client 100 and the virtual client 320. The session management server 200 uses the session management table 210 to manage the correspondence between the virtual PC and the user. Specifically, the session management server 200 stores and manages the session management table 210 in a storage device such as a magnetic disk device or an optical disk device.

  The virtual PC server 300 is connected to a SAN (storage device) 400 that stores OS area information (specifically, information about the OS and the virtualization client). On the virtual PC server 300, the OS 310 and the desktop virtualization client 320 read from the SAN 400 are deployed to realize a virtual PC. In this embodiment, an expression such as the virtual client 320 being deployed on the virtual PC server 300 is used. Specifically, the virtual PC server 300 reads information from the SAN 400, and based on the read information. Thus, processing for realizing the virtual client 320 is executed.

  The desktop virtualization server 500 is connected to a NAS (storage device) 600 that stores user environment information (AP (application) and data (user data)). The desktop virtualization client 320 deployed on the virtual PC server 300 requests user environment information 300 via the desktop virtualization server 500. Further, the virtualization client 320 (specifically, the virtual PC server 300) sends the requested user environment information 330 (the user environment information corresponding to the user B in the example shown in FIG. 1) to the desktop virtualization management server 500. Download from NAS600 via Then, the virtual PC server 300 expands the downloaded user environment information 330 (AP and data) on the desktop virtualization client 320.

  Next, a configuration example of a virtual desktop system using the user environment saving control method according to the present invention will be described. FIG. 2 is a block diagram showing a configuration example of a virtual desktop system using the user environment saving control method according to the present invention. As shown in FIG. 2, the virtual desktop system includes a priority determination server 700, an entrance / exit management system 800, and an employee information management system 900 in addition to the components shown in FIG. Further, as shown in FIG. 2, the priority determination server 700 is connected to an entrance / exit management system 800 and an employee information management system 900. In the virtual desktop system shown in FIG. 2, the function of the session management server 200 is different from the function of the session management server 200 shown in FIG.

  The thin client 100 is a terminal used by a user who uses the virtual desktop service, and is specifically realized by an information processing terminal such as a personal computer that operates according to a program. In FIG. 2, one thin client 100 is shown, but the virtual desktop system includes a plurality of thin clients 100.

  Specifically, the entrance / exit management system 800 is realized by an information processing apparatus such as a personal computer that operates according to a program. The entrance / exit management system 800 has a function of managing the working status and status of employees (for example, users) in an organization such as a company. For example, the entrance / exit management system 800 is connected to various entrance / exit devices (for example, a flapper gate) and includes a database for managing the entrance / exit status of each employee. The entrance / exit management system 800 manages the working status and status of each employee by updating the database based on input signals from various entrance / exit devices. In addition, the entrance / exit management system 800 extracts the entrance / exit information from the database at a predetermined timing (for example, in response to a request from the priority determination server 700 or every predetermined period), and sends it to the priority determination server 700. A function to transmit is provided.

  Specifically, the employee information management system 900 is realized by an information processing apparatus such as a personal computer that operates according to a program. The employee information management system 900 has a function of managing information such as job titles of employees (for example, users). For example, the employee information management system 900 includes a database that stores personnel information including job titles and the like of each employee. Then, the employee information management system 900 manages information such as job titles of each employee by updating the database in accordance with an input operation by a personnel officer or the like. In addition, the employee information management system 900 extracts personnel information from the database and transmits it to the priority determination server 700 at a predetermined timing (for example, in response to a request from the priority determination server 700 or every predetermined period). It has a function to do.

  Specifically, the priority determination server 700 is realized by an information processing apparatus such as a personal computer that operates according to a program. When the priority determination server 700 holds the user environment information of a user who uses the virtual desktop service using a cache, which user environment information of the user is preferentially held (hereinafter simply referred to as priority) It has a function to determine. In this embodiment, the priority determination server 700 is connected to the entrance / exit management system 800 and the employee information management system 900, and shares information necessary for priority determination (entrance / exit information and personnel information) as needed, Determine the priority.

  The priority determination server 700 also includes a priority management table 710 for managing the priority of each user. Specifically, the priority determination server 700 stores the priority management table 710 in a storage device such as a magnetic disk device or an optical disk device. In this embodiment, the priority determination server 700 stores a priority management table 710 that includes a user ID, a priority, and an assigned virtual PC-ID in association with each other, and manages the priority of each user.

  The priority determination server 700 is also connected to the session management server 200, and has a function of providing priority information to the session management server 200 via a communication network.

  Specifically, the session management server 200 is realized by an information processing apparatus such as a personal computer that operates according to a program. The session management server 200 includes a session management table 210 for managing a session established between the thin client 100 and the virtual client 320. The session management server 200 uses the session management table 210 to manage the correspondence between the virtual PC and the user. Specifically, the session management server 200 stores and manages the session management table 210 in a storage device such as a magnetic disk device or an optical disk device. In the present embodiment, the virtual PC is constructed by deploying the OS 310 and the virtual client 320 on the virtual PC server 300. Specifically, the virtual PC server 300 performs processing for reading out information on the OS 310 and the virtualization client 320 from the SAN 400, and developing and managing the information in a predetermined storage area.

  In the present embodiment, the session management server 200 has a function of searching for a bored virtual PC that can be assigned to the thin client 100 according to the priority determined by the priority determination server 700 and notifying the thin client 100 of the bored virtual PC. In addition, the session management server 200 has a function of updating the session management table 210 as needed according to the priority determined by the priority determination server 700. Specifically, the session management server 200 manages the priority information received from the priority determination server 700 by adding it to the session management table 210 as needed.

  FIG. 3 is an explanatory diagram showing an example of the session management table 210 stored in the session management server 200. As shown in FIG. 3, the session management server 200 stores a session management table 210 that includes a virtual PC-ID 211, a virtual PC-IP address 212, a user ID 213, a status 214, and a priority 215 in association with each other. is doing.

  The virtual PC-ID 211 is an identifier for identifying a virtual PC deployed on the virtual PC server 300. The virtual PC-IP address 212 is an IP address for accessing the virtual PC. The user ID 213 is an identifier for identifying the user to whom the virtual PC is currently assigned. That is, by confirming the user ID 213, it can be determined to which user the virtual PC is currently assigned.

  The virtual PC-ID 211, the virtual PC-IP address 212, and the user ID 213 are information necessary for the session management table 210 in the general virtual desktop system shown in FIG. Used when notifying the IP address of a connectable virtual PC in response to a connection request.

  The user ID 213 is added to the session management table 210 when a user is assigned to the virtual PC and the user environment information is downloaded on the virtual PC. That is, if no user is assigned to the virtual PC, the user ID 213 is blank (Null).

  The status 214 indicates whether or not the thin client 100 of the assigned user is currently connected (logged in) to the virtual PC. If the status 214 indicates that the user is not logged in (not connected), the virtual PC server 300 is in a state where the user environment information for the user is held using a cache. . For example, when the thin client 100 is logged off after connecting to a virtual PC at one end, the status 214 is in a disconnected state, and the user environment information for the user of the thin client 100 is held using a cache. .

  The priority 215 is the priority of the user to whom the virtual PC is assigned. In the example shown in FIG. 3, the smaller the value set as the priority level 215, the higher the priority level, and the higher the value, the lower the priority level.

  FIG. 4 is a functional block diagram showing a functional configuration example of the session management server 200. As shown in FIG. 4, the session management server 200 includes a connection request receiving unit 221, a free virtual PC searching unit 222, a non-connected virtual PC searching unit 223, a user environment save instruction unit 224, a user environment save completion notification receiving unit 225, A session management table clearing unit 226, a free virtual PC notification unit 227, a priority request unit 228, a priority notification reception unit 229, and a session management table update unit 230 are included.

  Specifically, the connection request receiving unit 221 is realized by a CPU and a network interface unit of an information processing apparatus that operates according to a program. The connection request receiving unit 221 has a function of receiving a connection request to the virtual PC from the thin client 100 via the communication network.

  Specifically, the free virtual PC search means 222 is realized by a CPU of an information processing apparatus that operates according to a program. The free virtual PC search means 222 assigns any user among the virtual PCs deployed on the virtual PC server 300 based on the session management table 210 when the connection request receiving means 221 receives the connection request. It has a function to search for unused virtual PCs. Specifically, the free virtual PC search means 222 searches for a virtual PC in which the user ID 213 in the session management table 210 shown in FIG. 3 is blank (Null).

  Specifically, the unconnected virtual PC search means 223 is realized by the CPU of the information processing apparatus that operates according to the program. The unconnected virtual PC search means 223 is a virtual PC deployed on the virtual PC server 300 based on the session management table 210 when the free virtual PC search means 222 determines that there is no free virtual PC. A function to search for a virtual PC in a disconnected state is provided. Specifically, the unconnected virtual PC search means 223 searches for a virtual PC whose status 214 in the session management table 210 shown in FIG. 3 is disconnected.

  Further, the non-connected virtual PC search means 223 has a function of searching for a virtual PC having the lowest priority when there are a plurality of non-connected virtual PCs. Specifically, the unconnected virtual PC search means 223 searches for a virtual PC having the highest priority 215 value in the session management table 210 shown in FIG.

  Specifically, the user environment save instruction unit 224 is realized by a CPU and a network interface unit of an information processing apparatus that operates according to a program. The user environment save instruction means 224 sends user environment save instruction information for instructing to save the user environment information of the virtual PC searched by the non-connected virtual PC search means 223 from the cache via the communication network. The function to transmit to 300 is provided. Specifically, the user environment save instruction unit 224 is based on the search result of the non-connected virtual PC search unit 223, and the user (if there are multiple virtual PCs that are in a non-connected state) Instruction information for instructing saving of the user environment information for the user with the lowest priority) is transmitted.

  Specifically, the user environment save completion notification receiving unit 225 is realized by the CPU and network interface unit of the information processing apparatus that operates according to the program. The user environment save completion notification receiving unit 225 has a function of receiving, via the communication network, a user environment save completion notification from the virtual PC server 300 indicating that the user environment information has been saved.

  Specifically, the session management table clearing means 226 is realized by a CPU of an information processing apparatus that operates according to a program. The session management table clear unit 226 has a function of clearing the information on the completion of the saving of the user environment information from the virtual PC information stored in the session management table 210 based on the received user environment saving completion notification. Specifically, the session management table clear unit 226 clears the values of the user ID 213, status 214, and priority 215 of the virtual PC that saved the user environment information.

  Specifically, the free virtual PC notification unit 227 is realized by the CPU and network interface unit of an information processing apparatus that operates according to a program. The free virtual PC notification means 227 has a function of transmitting a free virtual PC notification designating a free virtual PC to the thin client 100 via the communication network. In this case, when a free virtual PC search means 222 finds a free virtual PC, the free virtual PC notification means 227 sends a free virtual PC notification that designates a free virtual PC searched by the free virtual PC search means 222. Send. If a free virtual PC is not searched by the free virtual PC search means 222, the free virtual PC notification means 227 designates a virtual PC whose user environment information is saved and information is cleared by the session management table clear means 226. Send a free virtual PC notification.

  Specifically, the free virtual PC notification unit 227 extracts the virtual PC-IP address 212 corresponding to the specified virtual PC from the priority management table 710, and includes a free virtual PC-IP address 212 that includes the extracted virtual PC-IP address 212. Send a PC notification.

  Specifically, the priority request unit 228 is realized by a CPU and a network interface unit of an information processing apparatus that operates according to a program. The priority request means 228 has a function of transmitting a priority request for requesting transmission of user priority information to the priority determination server 700 via the communication network. Specifically, the priority request unit 228 transmits a priority request including a user ID that is a priority request target.

  Specifically, the priority notification receiving unit 229 is realized by a CPU and a network interface unit of an information processing apparatus that operates according to a program. The priority notification receiving unit 229 has a function of receiving a priority notification for notifying the user's priority from the priority determination server 700 via the communication network. Specifically, the priority notification receiving unit 229 receives a priority notification that includes a user ID and a priority in association with each other.

  Specifically, the session management table updating unit 230 is realized by a CPU of an information processing apparatus that operates according to a program. The session management table update unit 230 has a function of updating the session management table 210 based on the received priority notification. Specifically, the session management table updating unit 230 stores the user ID and the priority included in the received priority notification in the user ID 213 and the priority 215 of the session management table 210.

  FIG. 5 is an explanatory diagram showing an example of the priority management table 710 stored in the priority determination server 700. As illustrated in FIG. 5, the priority determination server 700 stores a priority management table 710 that includes a user ID 711, a priority 712, and a virtual PC-ID 713 in association with each other.

  The user ID 711 is an identifier for identifying the user of the thin client 100. The priority 712 is a priority determined by the priority determination server 700. In the example shown in FIG. 5, the smaller the value set as the priority 712, the higher the priority, and the higher the value, the lower the priority. The virtual PC-ID 713 is an identifier for identifying the virtual PC assigned to the user by device. The virtual PC-ID 713 is notified from the session management server 200.

  In the present embodiment, by providing the priority management table 710 as shown in FIG. 5, the priority determination server 700 can recognize which virtual PC is assigned to which user.

  FIG. 6 is a functional block diagram illustrating a functional configuration example of the priority determination server 700. As shown in FIG. 6, the priority determination server 700 includes a priority management table 710, entry / exit management information reception means 721, employee information reception means 722, priority management table update means 723, and priority notification means 724. .

  Specifically, the entry / exit management information receiving means 721 is realized by a CPU and a network interface unit of an information processing apparatus that operates according to a program. The entrance / exit management information receiving means 721 has a function of receiving entrance / exit information (for example, information indicating whether the user has entered / exited time or is currently working) from the entrance / exit management system 800 at a predetermined timing. Prepare.

  Specifically, the employee information receiving unit 722 is realized by a CPU and a network interface unit of an information processing apparatus that operates according to a program. The employee information receiving unit 722 has a function of receiving personnel information (for example, information indicating the user's job title or change status) from the employee information management system 900 at a predetermined timing.

  Specifically, the priority management table updating unit 723 is realized by a CPU of an information processing apparatus that operates according to a program. The priority management table updating unit 723 has a function of determining the priority of each user based on the entrance / exit information received by the entrance / exit management information receiving unit 721 and the personnel information received by the employee information receiving unit 722. The priority management table updating unit 723 has a function of updating the priority management table 710 based on the determined priority. The priority management table updating unit 723 has a function of extracting the priority from the priority management table 710 and outputting the priority to the priority notification unit 724 in response to a request from the session management server 200.

  Specifically, the priority notification unit 724 is realized by a CPU and a network interface unit of an information processing apparatus that operates according to a program. The priority notification unit 724, when receiving a priority request from the session management server 200, sends a priority notification including the priority extracted by the priority management table update unit 723 via the communication network. The function to transmit to.

  The priority notification means 724 has the priority updated based on the fact that new entry / exit information has been received from the entry / exit management information receiving means 721 and personnel information has been newly received from the employee information receiving means 722. Also, a priority notification including the updated priority is transmitted to the session management server 200 via the communication network.

  Specifically, the virtual PC server 300 is realized by an information processing apparatus such as a personal computer that operates according to a program. Similar to the virtual PC server 300 shown in FIG. 1, the virtual PC server 300 has a function of reading information from the SAN 400 and realizing a virtual PC based on the read information.

  Specifically, the desktop virtualization management server 500 is realized by an information processing apparatus such as a personal computer that operates according to a program. Similar to the desktop virtualization management server 500 shown in FIG. 1, the desktop virtualization management server 500 reads the user environment information from the NAS 600 and executes the processing provided to the virtual PC server 300. As described above, by using the user environment information provided by the desktop virtualization management server 500, the virtual desktop environment can be further used in the virtual PC deployed on the virtual PC server 300.

  In the present embodiment, the storage device (not shown) of the session management server 200 stores various programs for determining the user environment save timing when using the virtual desktop environment. For example, the storage device of the session management server 200 includes a process of searching for virtual PCs to be saved as user environment information among virtual PCs assigned by a virtual PC assignment server to a computer according to priority for each user. Based on the search result of the virtual PC that is the target of saving user environment information, save the user environment to cause the virtual PC allocation server to execute the process of saving the user environment information held using the cache from the cache A control program is stored.

  Next, the operation will be described. FIG. 7 is a state machine diagram for explaining an example of processing executed by the session management server 200. In this embodiment, a case where there is no free virtual PC when transmitting a connection request to the virtual PC to the session management server 200 according to a user operation will be described as an example. Further, in the present embodiment, a case will be described as an example in which a user B among a plurality of users makes a connection request by operating the thin client 100 in order to newly use a virtual PC.

  When the session management server 200 is in a request waiting state (S201), if a user B wants to newly use a virtual PC, the user B operates the thin client 100 to instruct transmission of a connection request to the virtual PC. . Then, the thin client 100 transmits a connection request to the session management server 200 via the communication network according to the operation of the user B.

  Next, when receiving a connection request from the thin client 100 of the user B, the session management server 200 searches for a free virtual PC based on the session management table 210 (S202). In the present embodiment, as shown in FIG. 3, since there is no virtual PC in which the user ID 213 is blank (Null) in the session management table 210, the session management server 200 determines that there is no free virtual PC. .

  If there is a virtual PC with the user ID 213 blank (Null) and it is determined that there is a free virtual PC, the process directly transitions to the state of S207.

  Next, the session management server 200 searches for a virtual PC that is in a disconnected state and has the lowest priority based on the session management table 210 (S203). In the example illustrated in FIG. 3, the session management server 200 first determines that the virtual PC-ID 211 is “0002” and “0050” based on the status 214 in the session management table 210 being disconnected. Identify the PC as a virtual PC that is disconnected. Next, among the identified virtual PCs, the session management server 200 is the virtual number having the highest value in the priority 215 column in the session management table 210 (in this example, the lower the priority, the larger the number). Identify the PC. In the example shown in FIG. 3, a virtual PC whose virtual PC-ID 211 having “12” stored as the priority 215 is “0050” is specified. Then, based on the session management table 210, the session management server 200 searches the user environment information of the user ID 213 “A” corresponding to the virtual PC whose identified virtual PC-ID 211 is “0050” as information to be saved. To do.

  Next, the session management server 200 saves the user environment via the communication network to the desktop virtualization client 320 (specifically, the virtual PC server 300) of the virtual PC corresponding to the user environment information searched as the save target. Instruction information is transmitted (S204). Then, the session management server 200 waits for reception of a user environment save completion notification from the desktop virtualization client 320 (S205).

  When the virtual PC server 300 receives the user environment save instruction information from the session management server 200, the virtual PC server 300 saves the user environment information specified to be saved in the received user environment save instruction information from the cache, and the desktop virtualization management server 500 Through the NAS600. In addition, the virtual PC server 300 deletes the saved user environment information from the cache so that a virtual PC can be assigned to a new user. Then, the virtual PC server 300 transmits a user environment save completion notification to the session management server 200 via the communication network.

  Next, when the session management server 200 receives the user environment save completion notification from the desktop virtualization client 320, the user ID 213 corresponding to the virtual PC whose virtual PC-ID 211 in the session management table 210 is “0050”, status All 214 and priority 215 are cleared (S206). Specifically, as shown in FIG. 8, the session management server 200 blanks the values of the user ID 213, status 214, and priority 215 corresponding to the virtual PC-ID 211 “0050” in the session management table 210 (Null). Update to

  Next, the session management server 200 transmits, to the thin client 100 via the communication network, a free virtual PC notification for notifying the IP address of the free virtual PC by saving the user environment information (S207). When a free virtual PC is searched in S202, in S207, the session management server 200 transmits a free virtual PC notification for notifying the IP address of the free virtual PC searched in S202.

  Thereafter, when receiving a free virtual PC notification, the thin client 100 attempts to connect to the virtual PC based on the IP address included in the received free virtual PC notification. The thin client 100 can use a virtual PC and a virtual desktop environment.

  In addition, after the session management server 200 transmits a free virtual PC notification specifying the IP address of the virtual PC, the session management server 200 uses the user ID of the user B who has permitted connection to the virtual PC as a key. The request is transmitted to the priority determination server 700 (S208). Then, the session management server 200 waits for a priority notification response from the priority determination server 700 (S209). Note that the session management server 200 may transmit a priority request to the priority determination server 700 before transmitting a free virtual PC notification.

  Upon receiving the priority request, the priority determination server 700 searches the priority management table 710 using the user ID of the user B included in the priority request as a key, and sets the priority corresponding to the user B to the priority management table 710. Identify from. The received priority request also includes the virtual PC-ID of the virtual PC assigned to user B, and the priority determination server 700 is based on the virtual PC-ID included in the received priority request. Thus, the value of the virtual PC-ID 713 corresponding to the user B in the priority management table 710 is updated. In this embodiment, since the virtual PC with the virtual PC-ID “0050” is assigned to the user B, the priority determination server 700, as shown in FIG. 9, the virtual PC-ID corresponding to the user ID 711 “B”. The value of ID713 is updated to “0050”, and the value of “0050” stored in the virtual PC-ID 713 corresponding to the user ID 711 “A” is cleared. Then, the priority determination server 700 transmits a priority notification including the searched priority to the session management server 200.

  Next, when receiving the priority notification from the priority determination server 700, the session management server 200 updates the priority 215 column in the session management table 210 based on the received priority notification (S20A), and waits for a request. Return to (S201). Specifically, as shown in FIG. 10, the session management server 200 updates the value of the user ID 213 corresponding to the virtual PC-ID 211 “0050” to “B” and the value of the status 214 to “connected”. At the same time, the value of the priority 215 is updated to “66” specified in the priority notification.

  By executing the above processing, when a connection request to a new virtual PC is made, the user environment information is saved based on the priority, and the virtual PC is assigned to the user.

  Next, an operation when the priority management table 710 of the priority determination server 700 is updated after the virtual PC is assigned to the user as described above will be described. When the status of the external system changes, such as when the entrance / exit information managed by the entrance / exit management system 800 or the personnel information managed by the employee information management system 900 is updated, the priority determination server 700 , Change user priority. Specifically, the priority determination server 700 updates the priority 712 value in the priority management table 710 to the updated priority value.

  When the priority is updated, the priority determination server 700 transmits a priority notification including the user ID and the priority to the session management server 200. Then, the session management server 200 updates the session management table 210 based on the information included in the priority notification desired to be received (S209), and returns to the request waiting state (S201) again.

  Next, a priority determination method performed by the priority determination server 700 will be described. FIG. 11 is an explanatory diagram illustrating an example of a priority determination method. The priority determination server 700 determines the priority of each user in consideration that it can be set uniquely for all existing users. In the example shown in FIG. 11, first, the priority determination server 700 identifies whether the user is on vacation (including a vacation schedule) based on the entrance / exit information received from the entrance / exit management system 800. Then, the priority determination server 700 determines the priority so that the priority of the user who is going to work (including the planned office) is higher than that of the user who is on vacation.

  Next, based on the entrance / exit information received from the entrance / exit management system 800, the priority determination server 700 uses the entrance / exit management record using an IC card, for example, to identify whether the user is currently inside or outside the company. . Then, the priority determination server 700 sets the priority so that the priority of the user in the company is higher than that of the user outside the company.

  Next, the priority determination server 700 sets priorities based on the personnel information received from the employee information management system 900 so that the priority of a person whose position is higher than the position information becomes higher.

  Next, the priority determination server 700 receives, for example, information on the duration of each user's non-connection state from the session management server 200, and based on the received information on the non-connection time, the priority decreases as the non-connection time decreases. Set the priority so that

  By executing the above processing, the priority determination server 700 can determine the priority of each user almost uniquely.

  Note that the method of determining the priority is not limited to the method illustrated in the present embodiment. For example, the priority determination server 700 performs priority determination in an order different from the order illustrated in FIG. A unique priority for the user may be determined. Further, for example, the priority may be determined by using any one or two in combination, instead of determining the priority by using all of the entry / exit information, personnel information, and non-connection time. In addition, for example, the priority of each user is determined based on attribute information such as the user's age, gender, and preference, for example, not only when the priority is determined based on entry / exit information, personnel information, and non-connection time. It may be determined.

  As described above, according to the present embodiment, when a virtual PC is allocated to a user, the user environment information for the user uses a cache in the virtual PC server 300 until the virtual PC becomes full. Held. Therefore, it is possible to reduce the time that is waited until the user connects to the virtual PC when reconnecting. In addition, when the number of user environment information that can be stored exceeds the number of virtual PCs, the user environment information is saved according to the priority and assigned to a virtual user for a new user. Therefore, it is possible to prevent the cost from increasing more than necessary. Therefore, it is possible to reduce the cost when using the virtual desktop environment and reduce the connection time.

  For example, in the configuration of a general virtual desktop system as shown in FIG. 1, when a thin client 100 of a user connects to a virtual PC, the thin client 100 inquires of the session management server 200 to connect to the virtual PC of the connection destination. Receive notification of IP address. Then, the thin client 100 makes an RDP connection to the virtual PC based on the IP address received from the session management server 200. Further, each time the desktop virtualization management client 320 detects a connection from the thin client 100, the user environment information (for example, user environment information 330 of UserB shown in FIG. 1) is transmitted via the desktop virtualization management server 500. Download from NAS600. Thus, in general, downloading user environment information for each connection is a factor that increases the connection time.

  In contrast, in the present embodiment, as shown in FIG. 2, a new sequence for performing cache management of user environment information is realized between the session management server 200 and the desktop virtualization management client 320. Then, an information column for cache management is added to the session management table 210. With such a configuration, the user environment information of the user to whom the virtual PC is assigned is held in the cache to some extent, it becomes unnecessary to download the user environment information for each connection, and the connection time is reduced.

  In addition, when the number of users that can be used for cache management is exceeded and there is a connection request from the user, the user environment information of the user with lower priority is saved from the cache and a virtual PC is sent to the new user. Control to assign. In the present embodiment, the priority determination server 700 caches user environment information based on information from the entrance / exit management system 800 that knows the user's work status and the employee information management system 900 that manages the user's job title. And the priority of evacuation is determined. The determined priority is additionally stored in the session management table 210 of the session management server 200, and the session management server 200 receives the user environment information with the lowest priority when a connection request is received from the thin client 100. Evacuate. By doing so, the cost is prevented from increasing more than necessary.

  Further, in the present embodiment, if the priority determination parameter is changed based on the user's work situation or the like, efficient user management suitable for the business of the user company can be made possible.

Embodiment 2. FIG.
Next, a second embodiment of the present invention will be described with reference to the drawings. In the first embodiment, the case where the user environment information stored in the cache exceeds the upper limit value and the user environment information is saved in the order of low priority has been described. Information exists on the virtual PC. Therefore, if the priority drops to some extent, the user environment information is automatically saved even if the upper limit that can be held in the cache is not exceeded, so that a free virtual PC is secured. May be.

  FIG. 12 is a state machine diagram for explaining an example of processing executed by the session management server 200 in the second embodiment. Specifically, as shown in FIG. 12, in the present embodiment, when the session management server 200 updates the session management table 210 in the state S20A, the session management server 200 shifts to the state S20B and determines the priority as a threshold. Then, it is searched whether there is a user forcibly saving the user environment information. Specifically, the session management server 200 determines whether or not there is a user whose priority level 215 in the session management table 210 is equal to or higher than a predetermined threshold. It is determined that the environmental information is forcibly saved. If it does not exist, it is determined that there is no user who needs to forcibly save the user environment information.

  Next, when the session management server 200 determines that there is a user who needs to save the user environment information, the session management server 200 shifts to the state S203 and executes the processing after the state S203. If it is determined that saving of the user environment information is unnecessary, the process returns to state S201. Note that the processing after the state S203 is the same as those shown in the first embodiment.

  If it is determined that forced saving is necessary, after the saving of the user environment information is completed and the session management table is updated (state S206), the state transitions again to state S201.

  As described above, according to the present embodiment, the user environment information is forcibly evacuated from the cache when the priority value is equal to or higher than a predetermined threshold (priority becomes low). By controlling, it is possible to prevent the cost from increasing more than necessary. Therefore, it is possible to reduce the cost when using the virtual desktop environment and reduce the connection time.

  Next, the minimum configuration of the user environment evacuation control system according to the present invention will be described. FIG. 13 is a block diagram showing a minimum configuration example of the user environment save control system. As shown in FIG. 13, the user environment save control system includes a priority determination server 700, an unconnected virtual PC search means 223, and a user environment save instruction means 224 as minimum components.

  In the minimum configuration user environment evacuation control system shown in FIG. 13, the priority determination server 700 has a function of determining the priority for each user. The unconnected virtual PC search means 223 searches for virtual PCs to be saved as user environment information among virtual PCs allocated by the virtual PC server 300 according to the priority determined by the priority determination server 700. It has a function to do. The user environment save instruction unit 224 has a function of causing the virtual PC server 300 to save the user environment information held using the cache from the cache based on the search result of the unconnected virtual PC search unit 223.

  According to the minimum configuration user environment evacuation control system shown in FIG. 13, it is possible to reduce the cost of using the virtual desktop environment and reduce the connection time.

  In each of the above-described embodiments, characteristic configurations of the user environment save control system and the user environment save control device as shown in the following (1) to (7) are shown.

  (1) A user environment evacuation control system is a user environment evacuation control system that evacuates user environment information (for example, applications and data (user data)) for realizing a virtual desktop environment for each user on a virtual PC. Priority determination means for determining the priority for each user (for example, realized by the priority determination server 700), and the virtual assigned by the virtual PC allocation server according to the priority determined by the priority determination means Based on the search result of the virtual PC search means (for example, realized by the non-connected virtual PC search means 223) and the virtual PC search means for searching for the virtual PC to be saved in the user environment information among the PCs, the virtual PC search means User environment information saving control means (example: saving user environment information held using the cache in the PC allocation server from the cache) For example, it is realized by the user environment save instruction means 224).

  (2) In the user environment evacuation control system, the virtual PC search means is assigned to the user who is not connected to the user terminal and has the lowest priority among the virtual PCs assigned by the virtual PC assignment server. The virtual PC is searched as a virtual PC to be saved in the user environment information, and the user environment information save control means is connected to the virtual PC allocation server in a disconnected state from the user terminal based on the search result of the virtual PC search means. The user environment information corresponding to the virtual PC assigned to the user with the lowest priority may be configured to be saved from the cache.

  (3) The user environment evacuation control system includes entry / exit management means (for example, realized by the entry / exit management system 800) for managing user entry / exit information, and the priority determination means is input from the entry / exit management means. Based on the entry / exit information, the priority for each user may be determined.

  (4) The user environment evacuation control system includes personnel information management means (for example, realized by the employee information management system 900) for managing user personnel information, and the priority determination means is input from the personnel information management means. Based on personnel information, you may be comprised so that the priority for every user may be determined.

  (5) In the user environment evacuation control system, when a new connection request is made from the user terminal to the virtual PC, the virtual PC search means determines that there is no free virtual PC that can be newly allocated by the virtual PC allocation server. Alternatively, the virtual PC may be configured to search for a virtual PC to be saved as user environment information.

  (6) In the user environment evacuation control system, the virtual PC search means is assigned to the user whose priority has reached the predetermined threshold when the priority value determined by the priority determination means reaches the predetermined threshold. The configured virtual PC may be searched as a virtual PC to be saved as user environment information.

  (7) The user environment evacuation control apparatus is a user environment evacuation control apparatus (for example, session management server 200) that evacuates user environment information for realizing a virtual desktop environment for each user on a virtual PC. The virtual PC search means (for example, the non-connected virtual PC search means 223) that searches for virtual PCs to be saved in the user environment information among the virtual PCs assigned by the virtual PC assignment server according to the priority of the virtual PC. ) And user environment information saving control means (for example, user environment saving instruction means) that causes the virtual PC allocation server to save the user environment information held using the cache from the cache based on the search result of the virtual PC searching means 224).

  The present invention can be applied to the use of a virtual desktop system that provides a virtual desktop service.

100 thin clients
200 session management server
210 Session management table
221 Connection request receiving means
222 Free Virtual PC Search Method
223 Unconnected Virtual PC Search Method
224 User environment save instruction means
225 User environment save completion notification receiving means
226 Session management table clearing method
227 Free virtual PC notification means
228 Priority request means
229 Priority notification receiving means
230 Session management table update method
300 Virtual PC server
310 OS
320 Virtualization client
330 User environment information
400 SAN
500 Desktop virtualization management server
600 NAS
700 priority determination server
710 Priority management table
721 Access control information receiving means
722 Employee information receiving means
723 Priority management table update method
724 Priority notification means
800 Entrance / exit management system
900 Employee information management system

Claims (9)

A user environment evacuation control system for evacuating user environment information for realizing a virtual desktop environment for each user on a virtual PC,
Priority determination means for determining the priority for each user;
According to the priority determined by the priority determination means, a virtual PC search means for searching for a virtual PC to be saved in the user environment information among virtual PCs assigned by a virtual PC assignment server,
Based on the search result of the virtual PC search means, the virtual PC allocation server comprises user environment information save control means for saving the user environment information held using a cache from the cache. User environment evacuation control system. The virtual PC search means includes a virtual PC assigned to a user who is not connected to a user terminal and has the lowest priority among the virtual PCs assigned by the virtual PC assignment server, the user environment information Search as a virtual PC to be saved,
The user environment information evacuation control means is based on the search result of the virtual PC search means, and is assigned to the virtual PC allocation server to a user who is not connected to the user terminal and has the lowest priority. The user environment saving control system according to claim 1, wherein the user environment information corresponding to a PC is saved from the cache. It has an entry / exit management means for managing user entry / exit information,
The user environment evacuation control system according to claim 1, wherein the priority determination unit determines a priority for each user based on the entry / exit information input from the entry / exit management unit. HR information management means to manage user HR information,
4. The user environment evacuation according to claim 1, wherein the priority determination unit determines a priority for each user based on the personnel information input from the personnel information management unit. 5. Control system. The virtual PC search means, when there is a new connection request from the user terminal to the virtual PC, and there is no free virtual PC that can be newly allocated by the virtual PC allocation server, The user environment evacuation control system according to claim 1, wherein a virtual PC to be searched is searched for. The virtual PC search means, when the priority value determined by the priority determination means reaches a predetermined threshold, the virtual PC assigned to the user whose priority has reached the predetermined threshold, The user environment evacuation control system according to any one of claims 1 to 5, wherein the user environment information is retrieved as a virtual PC to be evacuated. A user environment save control device for saving user environment information for realizing a virtual desktop environment for each user on a virtual PC,
According to the priority for each user, out of the virtual PCs allocated by the virtual PC allocation server, a virtual PC search means for searching for a virtual PC to be saved of the user environment information,
Based on the search result of the virtual PC search means, the virtual PC allocation server comprises user environment information save control means for saving the user environment information held using a cache from the cache. User environment save control device. A user environment save control method for saving user environment information for realizing a virtual desktop environment for each user on a virtual PC,
Decide the priority for each user,
According to the determined priority, among the virtual PCs allocated by the virtual PC allocation server, search for virtual PCs to be saved as the user environment information,
A user environment characterized in that, based on a search result of a virtual PC as a save target of the user environment information, the user environment information held using a cache is saved in the virtual PC allocation server from the cache. Evacuation control method. A user environment saving control program for saving user environment information for realizing a virtual desktop environment for each user on a virtual PC,
On the computer,
According to the priority for each user, among the virtual PCs allocated by the virtual PC allocation server, a process of searching for a virtual PC to be saved of the user environment information,
For causing the virtual PC allocation server to execute a process of saving the user environment information held using a cache from the cache based on a search result of a virtual PC as a save target of the user environment information. User environment save control program.

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