Abstract:
Supporting multiple users concurrent login and providing each user to be able to perform multiple concurrent tasks in his/her computer work environment are very critical to modern computer user working environment, which is running on top of modern operating system, due to it greatly improved machine efficiency and user&#39;s productivities. Therefore, supporting multiple users concurrent login CCDSVM through each user&#39;s web-browser and providing each user to be able to perform multiple concurrent tasks in his/her single login web-browser over resources of CCDSVM will qualify the conventional web-browser to be a new means of a computer user working environment at the Internet era. 
     To support one or multiple users to perform multiple concurrent tasks within a single web-browser for system like CCDSVM, the software modules on systems of CCDSVM require to work and communicate together to collect resource information of CCDSVM, and to display them in each user&#39;s web-browser, and further to allow each user selecting the resource, initiating and submitting the tasks from said single web-browser; the software of CCDSVM needs to store each received task information into a user space task list and further to distribute each task to the target system for executing. In addition, software of CCDSVM needs to obtain associated conventional or non-conventional locks for each task and properly release these acquired locks one at a time in the order during each tasks executing up to the point when the tasks are finished.

Description:
CROSS-REFERENCE RELATED TO APPLICATION(S) 
       [0001]    This application is divisional application of U.S. application Ser. Nos. 10/713,904 entitled “Concurrent Web Based Multi-Task Support for Control Management System” and this application also claims the benefit of priority of U.S. Provisional Application 60/401, 238 in the name of the same inventor filed on Aug. 6, 2002. 
     
    
     FIELD OF THE INVENTION 
       [0002]    The present invention generally relates to computer communications network. More specifically, the present invention relates to a web based central controlled distributed scalable virtual machine system (“CCDSVM”). 
       BACKGROUND OF THE INVENTION 
       [0003]    A typical computer system provides a computer user work environment to end users, wherein the computer user work environment runs on top of a generic computer operating system. With this work environment, an end user can login to the system and. setup various computer resource access controls for each individual preference based on his or her permitted role. The users, for example, can configure computer resources such as disks, networks, file systems, file folder/directory and, files, one or more CPU, memory, the connected systems on the network, display equipments, keyboard mouse, structured or non-structured data and others. 
         [0000]    Various computer tasks &amp; operations can be executed by the computer application, and the computer operating system of the system provides the results of tasks to the end user. Specially, with a generic computer operating system, this work environment allows multiple concurrent users and each of them to run multiple concurrent tasks or operations simultaneously. 
         [0004]    The computer user work environment has evolved from paper tape &amp; punch card environment, command line environment on a native system to window &amp; mouse click environment on a native system in the past. This invention provides users a web-based computer user work (operating) environment on top of generic operating system for a single or multiple computers and to allow user work on one or multiple computer systems through a conventional web-browser. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0005]    The accompanying drawings, which are incorporated into and constitute a part of this specification, illustrate one or more examples of embodiments and, together with the description of example embodiments, serve to explain the principles and implementations of the embodiments. In the drawings: 
           [0006]      FIG. 1  illustrates an example of a simplified multi-tasks support on Web-console in a simple environment. 
           [0007]      FIG. 2  illustrates an example of a simplified multi-tasks support on Web-console in a CCDSVM environment. 
           [0008]      FIG. 3  illustrates an example of basic data flow between a web-console on a Console system and the console supporting software in a control management environment. 
           [0009]      FIG. 4  illustrates an example of a task and an operation processing flow chart in a CCDSVM environment.  FIG. 4B  illustrates another example of a task and an operation processing flow chart in a CCDSVM environment. 
           [0010]      FIG. 5  illustrates a user space task list, which includes an abstraction of data structure for multiple simultaneous concurrent tasks and operations control in CCDSVM environment. 
           [0011]      FIG. 6  illustrates a layered CCDSVM structure. 
           [0012]      FIGS. 7 , and  7 B illustrate typical hardware components including a control management system, System Units, and Console systems, which consist one or more CPU, memory, secondary storage such as disks or memory sticks, the network interface cards, and display components such as monitor or others. These components are connected through buses. 
           [0013]      FIG. 8  illustrates another variation of CCDSVM configuration, where each System Units may also configured with a web browser and/or a web server software so that it is capable to direct communication with web browser on client system, console system, control system or on System Units itself. 
       
    
    
     BRIEF DESCRIPTION OF THIS INVENTION 
       [0014]    The traditional web server or other server ( 3  of  FIG. 1 ) may support users from a web browser ( 8  of  FIG. 1 ) somewhere on the net to perform some tasks, which could get quick responses and could be finished in a short period of time such as checking web server&#39;s status or getting a server&#39;s other information, et cetera. However, it may not support well for multiple simultaneous concurrent tasks or operations from the same web-browser, especially when these tasks are time consuming to finish. 
         [0015]    For example, creating a 60 GB file system on the server, or configuring a raid controller on that server ( 3  of  FIG. 1 ) is a large (and time consuming) task. Because these tasks often take a large amount of time and will hang in the web-console on Console system ( 1  of  FIG. 1 ), as a result, no other tasks could be performed parallel from the same web-console at the same time. In addition, traditional console supporting software ( 5  of  FIG. 1 ) does not work for a more complicated environment such as in a CCDSVM environment ( FIG. 2 ). 
         [0016]    To solve these problems and effectively to support multiple simultaneous concurrent tasks on a web-console for both simple and CCDSVM environment, the console supporting software ( 5  of  FIG. 1 ) needs to include additional control management software modules ( 4  of  FIG. 2 ) and others. The control management software module shall communicate and control all System Units ( 3  of  FIG. 2 ). Also, each System Units ( 3  of  FIG. 2 ) needs service software modules ( 8  of  FIG. 2 ) to communicate with control management software ( 4  of  FIG. 2 ) of console support software ( 6  of  FIG. 2 ). 
         [0017]    In addition, a user space task list ( FIG. 5 ) could be used together with conventional or non-conventional locks to support all multiple simultaneous concurrent tasks and operations. With this invention, the multi-tasks support on the web-console in a simple environment ( FIG. 1 ) has been viewed as a special case of such support in a CCDSVM environment ( FIG. 2 ). The CCDSVM ( FIG. 2 ) will be degenerated into a simple server environment ( FIG. 1 ) if multiple System Units ( 3  of  FIG. 2 ) do not present. 
         [0018]    These and other features, aspects and advantages of the present invention will become understood with reference to the following description, appended claims and accompanying figures set forth below. 
       DETAILED DESCRIPTION OF THE INVENTION 
       [0019]    CCDSVM is configured to provide a Control system to control a group of systems and provide distributed services to at least one client system over an Intranet, an Internet as well as a LAN environment. The software components of CCDSVM form the virtual operating environment. When a server provides software support, which allows a user access the server and performs system operations on this server, a web-browser on a system (such as a desktop, laptop, server, PDA, or cell phone), which can be anywhere on net, this special web-browser of that system becomes a web-console. With CCDSVM, a permitted user from web-console should be able to access and operate entire CCDSVM. 
         [0020]    To simplify the discussion, the term of thread and process are roughly used without differentiation between them in this invention regardless the very restricted definition of the thread and process in computer science field. Here both thread and process are basically referred as a sequence of instructions based on a piece of program code, which starts to be executed by a computer system step by step and further to carry out a computer task. 
         [0021]    Lock is a mechanism that allows a thread to look a computer resource for its own use and prevents other threads, which attempt to manipulate this same resource at the same time, from access to the same computer resource. There is conventional lock, which can be acquired and released by the same thread. The conventional lock mechanisms have used by most software developer crossing the software industry. The lock described in this invention may or may not be a conventional one. The non-conventional lock mechanisms created in this invention can be acquired by one thread and may be released by same thread or by another thread. Therefore, it is non-conventional lock serving threads on the native system. Each lock may be associated with a timer in case a thread or process need to be retreated from acquiring a lock to avoid the possibility of waiting too long or waiting forever if deadlock accurse. 
         [0022]      FIG. 1  illustrates an example of a web-console scheme in a simple environment, which includes a Console system  1 , a server  3 , and a net  2 . Console system  1  further includes a web-console  8  having a browser. Server  3  includes a web-console, a web server software  4 , and a console support software  5 , wherein said console support software  5  further includes web server interface  6  and other service modules  7 . It should be noted that the same reference indicators will be used throughout the drawings and the following description to refer to the same or like items. 
         [0023]    Console system ( 1 ), from which a user is able to perform system tasks or operations for server ( 3 ) through web-console (browser) ( 8 ) of Console system ( 1 ) can be any system on the net  2 , such as a server, a desktop PC, a laptop PC, a hand held PDA, or a cell phone. The web browser ( 8 ) may be commercially available software from any vendor or a proprietary software companies. The web browser  8  is able to handle the web protocol such as HTTP. The Console system  1  may also include other software modules ( 9 ), which may be implemented with any suitable programming languages such as C, C++, Java, XML, et cetera. Other software modules  9  are used to communicate between said server ( 3 ) and said Console system  1  using IP, non-IP or any suitable protocols for receiving and/or sending data between said Console system  1  and said server ( 3 ). 
         [0024]    Server ( 3 ) could be a web server or any kind of system with web server software includes web server software ( 4 ) and console supporting software ( 5 ). The console supporting software ( 5 ) includes web server interface ( 6 ) and other services software modules ( 7 ), wherein said other services software  7  operates on native server system. The web server software ( 4 ) may be commercially available or proprietary software, which is able to accept and handle the web protocol such as HTTP. A native web-console (browser) ( 8 ), therefore, enables a user to access and operate the computer locally. 
         [0025]    Net  2  represents a network infrastructure such as Internet and intranet, LAN with all kinds of related network equipment and media such as switch/router, different kind of cables and wireless media. 
         [0026]      FIG. 2  shows an example simplified block diagram of an embodiment of CCDSVM. The system includes Console systems  1 , a Control system  2 , System Units  3 , a net 1   11 , a net 2   12 , and client systems  10 . Console systems ( 1 ) could be any system on the net such as a server, a desktop PC, a laptop PC, a hand held PDA, or a cell phone. A web-console (web browser) ( 9 ) can be used to access and operate the entire CCDSVM. The web browser ( 9 ) may be commercially available software from any vendor or proprietary software company. The web browser  9  is able to handle web protocol such as HTTP. A difference between a web-console  9  and a web browser is that the web-console  9  is capable of accessing system information and performing system operation in the CCDSVM environment. 
         [0027]    The Console system may also include other software modules ( 13 ), which may be implemented with any suitable programming languages such as C, C++, Java, XML etc. These software modules may be used to facilitate communications between Control system ( 2 ) and Console systems  1  using IP, non-IP or any suitable protocols for receiving or sending data between Console system and Control system ( 2 ). To support a non-web-based networked console, the software used by the web console  9  is configured to handle protocol other than web protocol (HTTP) and communicate with console supporting software on Control system. 
         [0028]    Control system ( 2 ) could be any system on the net such as a server, a desktop PC, a laptop PC, or others. The Control system includes web server software ( 7 ) and console supporting software ( 6 ). The console supporting software ( 6 ) includes web server interface software modules ( 5 ) and control management software modules ( 4 ). It should be noted that the console supporting software  6  may include others service software modules. It may also have native Web browser used as a web-console ( 9 ) of native system. The web server software ( 7 ) discussed earlier could be commercially available software from a major vendor or other proprietary software company. Both console support software ( 6 ) and web server software ( 7 ) are able to accept and handle the web protocol such as HTTP, HTTPS and so forth. The web server software ( 7 ) sends data to and receives data from web-console  9  of Console systems  1 . 
         [0029]    The console supporting software ( 6 ) can be implemented with any suitable languages such as C, C++, Java, HTML, XML, WML, Javascript, and so forth, or even implemented by using a combination of different languages as long as it provides the features and functionality described in this invention. That means it is language independent. In addition, the communication protocol used between console support software ( 6 ) and service software modules ( 8 ) of System Units ( 3 ) could be any suitable protocol such IP based, or non-IP based or other protocols. Console support software ( 6 ) communicate and manage one or multiple System Units ( 3 ) and collect resource information on Control system or one or more System Units; Said resource information may be organized for user to easy select resource and submit tasks from web browser such as in a form of multi-layered sub-folder tree, where each node may be associated and bound with graphic image and operation menu. 
         [0030]    There may be several fixed threads being created based on control management software modules ( 4 ), and each fixed threads may create one or multiple child threads for perform one or multiple tasks in background. There are may be various number of threads that are created based on web server interface software modules ( 5 ) for each tasks being initiated by a user at the web-console  9 . All of these threads may be communicated with each other through inter-process communication based on web interface modules ( 5 ) and control management module ( 4 ), which are simply referred to the thread of console supporting software ( 6 ). However, to simplify the discussion, they may be just referred to console supporting software ( 6 ) without mentioning the thread at all. 
         [0031]    If there is a need to support a less effective non-web-based networked console, there is no need for web server software ( 7 ) and web server interfacing software module ( 5 ) to be employed. Instead, an additional network software module is required and it could be implemented with any suitable programming language and any suitable communication protocol other than web protocol (HTTP). This network software module can communicate with networked console software on Console system ( 1 ) via network link and further to communicate with the rest of console supporting software ( 6 ) via inter-process communication mechanism. 
         [0032]    System Units ( 3 ) could be any system on the net such as a server, a desktop PC, a laptop PC, a hand held PDA, a cell phone, any operational system, a video server, a web server, a storage block data server (SAN unit), a video monitoring device, and so forth. The System Units contains service software modules ( 8 ), which are capable of communicating with the outside world. For example, service modules  8  is used to communicate with control management software ( 4 ) of Control system ( 2 ) for carrying out the tasks, or to communicate with clients  10  of CCDSVM for delivering the services to them, or to communicate with another System Units ( 3 ) for transferring the data. The service software modules could be implemented with any suitable programiing languages such as C, C++, Java, or others. It should be noted that the communication protocol could be any suitable protocol such as IP (Internet Protocol) base or other non-IP based protocol. 
         [0033]    The net 1   11  represents any kind of communication link between Control system ( 2 ) and web-console ( 9 ) or client system ( 10 ). The link could be an infrastructure of internet, intranet, LAN, or others. The link could use connection media such as cable (Ethernet, optical Fiber, and other), wireless media, bus. The link could also use communication equipment such as switches, routers, and/or adapters. 
         [0034]    The net 2  ( 12 ) represents any kind of communication link between Control system ( 2 ) and the System Units ( 3 ) or web-consoles ( 9 ). The link could be an infrastructure of internet, intranet, LAN, or other. The link could use connection media such as cable (Ethernet, optical Fiber, and other), wireless media, bus, and could use communication equipment such switch/routers/adapter etc. 
         [0035]    Client systems ( 10 ) are not part of CCDSVM but they may requests services from CCDSVM, as shown in  FIG. 2  via web browser. Client system will be treated same as Console system in present invention without differentiation. 
         [0036]      FIG. 3  illustrates a simplified data flow between web-console ( 9  of  FIG. 2 ) on Console system ( 1  of  FIG. 2 ) and the console supporting software ( 6  of  FIG. 2 ) on Control system ( 2  of  FIG. 2 ). Data travels from web-console ( 9  of  FIG. 2 ) to console supporting software ( 6  of  FIG. 2 ) includes two steps. First, data goes from web-console ( 9  of  FIG. 2 ) to web server software ( 7  of  FIG. 2 ) via net ( 11  or  12  of  FIG. 2 ). Second, console supporting software ( 6  of  FIG. 2 ) gets data from web server software ( 7  of  FIG. 2 ) via inter-process communication. To simplify the discussion of this invention, this data traveling path will simply refer to as console supporting software ( 6  of  FIG. 2 ) getting data from web-console ( 9  of  FIG. 2 ) or refer to as the data being sent from web-console ( 9  of  FIG. 2 ) to the console supporting software ( 6  of  FIG. 2 ). 
         [0037]    Data travels from console supporting software ( 6  of  FIG. 2 ) to web-console ( 9  of  FIG. 2 ) includes two reverse steps. First, the web server software ( 7  of  FIG. 2 ) gets data from console supporting software ( 6  of  FIG. 2 ) via inter-process communication. Second, the web server software ( 7  of  FIG. 2 ) sends data to web-console ( 9  of  FIG. 2 ) via net ( 11  or  12  of  FIG. 2 ). To simplify the rest discussion in this invention, this reverse data traveling will refer to as data being sent from console supporting software ( 6  of  FIG. 2 ) to web-console ( 9  of  FIG. 2 ) or refer to as web-console ( 9  of  FIG. 2 ) gets data from console supporting software ( 6  of  FIG. 2 ). The terms data, information, and information on a web page will be used interchangeably herein. 
         [0038]      FIG. 4  shows one embodiment of the basic tasks and operation processing flow chart, which initiated from web-console.  FIG. 4B  illustrated another embodiment of a example such that a user try to initiate two tasks from a web browser, Task-1 for transmit a 4 GB data file from control system to one of System Units, and another Task-2 is to delete a file on control system. 
         [0039]    At act  15  of  FIG. 4 , the task-1 being submitted first; at act  16 , web interface module ( 5 ) of control system ( 2 ) of  FIG. 2  receives this task information passed from web server ( 7 ) of control system; at act  17 , web interface creates a web interface thread- 1  to handle this task and wait for a lock at act  18 . Once obtains a lock at act  19 , said web interface thread- 1  stores the task into a valid entry on user space task list as act  19 , and the entry becomes invalid as act  20 , and further may provide a initial response feedback encoded with status information back to user&#39;s web browser as act  22 , released lock immediately as act  21 , pass the task to control management software modules ( 4 ) of control system ( 2 ) as act  23 , and exit as act  24 . Due to the entire process from act  16  to act  21  may only take less than a millisecond, therefore, the user will feel that without any waiting he/she can submit the task-2 immediately regardless if said task-1 is finished or not. 
         [0040]    At act  25  of  FIG. 4 , control management module ( 4 ) created one or multiple control management threads to actually execute said task-1 together with one or multiple locks for protection, where said one or multiple control management threads will run in background until finishing the task as act  26 . Upon the finishing said task1, the entry stored with task-1 information will be marked as valid again as act  27 , provide result feedback as act  28 , and finally said one or multiple control management threads exited as act  29 . 
         [0041]    With this specific example, due to task-1 will take time to finish run, the task-2 and many be one or more other tasks could run concurrently in a same single web browser with task-1 in similar steps. Also, said result feedback may provide the status of the result, where the status could be a point to the location of deposited result or the actual result, or a status notice of success or failure of the task. With this invention, user at web browser do not have to wait the task result, therefore, the web browser is never blocked or freezing, and user can run one or multiple concurrent tasks within a single web browser, which has actually being accomplished before the initial filing of present invention. In addition said response feedback and result feedback are encoded into a web page with any suitable programming languages such as C, C++, Java, XML, HTML, WML, Javascript and so forth, and may also encoded and associated with one or more operation menu. 
         [0042]      FIG. 5  shows an embodiment of a user space task list for all users. Each slot on the user space task list can be used to hold task information relating to a task issued from Web-console and task information will be cleared upon task finished to run in either case of success or failed. In another embodiment each user login session might have a per-user based user space task list and said console support software modules of Control station manages all per-user based user space task list. 
         [0043]      FIG. 6  illustrates a layered CCDSVM environment, which provides a flexible scalability mechanism to efficiently support thousands of heterogeneous System Units. With this structure, a Control system ( 2  of  FIG. 2 ), which is situated at middle layer  2  becomes a System Units of the up layer 1 . 
         [0044]      FIG. 7  illustrates typical hardware components including a control management system, System Units, and Console systems. It consists of one or more CPU, memory, secondary storage such as disks or memory sticks, the network interface cards, and display components such as monitor or others. These components are connected internally through buses. 
         [0045]    The detailed explanation of  FIG. 2  will show that how multiple concurrent tasks can be initiated from a web-console ( 9  of  FIG. 2 ) and can be executed either on any one of the System Units ( 3  of  FIG. 2 ) or on a Control system ( 2  of  FIG. 2 ) according to this invention. 
         [0046]    In one example, a user A at a web-console ( 9  of  FIG. 2 ) receives an authentication from the console supporting software ( 6  of  FIG. 2 ). In one embodiment, a successfully login on a Control system ( 3  of  FIG. 2 ) is considered an authentication because it authorizes user A to access the system. So that user A has obtained necessary information about all System Units ( 3  of  FIG. 2 ) and Control system ( 2  of  FIG. 2 ) from console supporting software ( 6  of  FIG. 2 ). When user A initiates a task for a selected target system, which is either a System Units ( 3  of  FIG. 2 ) or the Control system ( 2  of FIG.  2 ), the task information is transmitted via net ( 11  or  12  of  FIG. 2 ) from web-console ( 9  of  FIG. 2 ) to the console support software ( 6  of  FIG. 2 ) on Control system ( 2  of  FIG. 2 ). 
         [0047]    In addition, said necessary information are encoded into a web page with any suitable programming languages such as C, C++, Java, XML, HTML, WML, Javascript and so forth, and may also encoded and associated with one or more operation menu. Therefore, users are able to select resource, submit and run tasks for control system or System Units from different web browsers at different locations 
         [0048]    A thread is created by console support software ( 6  of  FIG. 2 ) wherein the thread will serve and carry out this task. The created thread obtains a lock for accessing user space task list, stores the task information into a valid entry on a user space task list ( FIG. 5 ). This ensures that the multiple tasks can be initiated simultaneously within the same web-console ( 9  of  FIG. 2 ) without delaying, effecting or blocking other potential thread(s). 
         [0049]    In addition, multiple web-consoles for one or multiple concurrent users anywhere on the net ( 11  or  12  of  FIG. 2 ) also can be supported and each task could be executed without time delay. The obtained locks for this task will be properly released one at a time along with the task execution up to a point when the task is finally finished. 
         [0050]    If the total tasks initiated from web-console ( 9  of  FIG. 2 ) have succeeded the maximum allowed tasks by console supporting software ( 6  of  FIG. 2 ), the initiated task is failed. The locks will be released by the corresponding thread and the user A on web-console ( 9  of  FIG. 2 ) is notified correspondingly via net ( 11  or  12  of  FIG. 2 ) through an encoded status information. 
         [0051]    If an existing task is in a stage of changing a resource object on a target system and if a newly created task will change on the same resource object on that target system, the newly initiated task may fail or may have to wait until the previous task is finished. Further, if a task is failed, the locks associated with the task will be release by the thread and the user A on the web-console ( 9  of  FIG. 2 ) will be notified via net ( 11  or  12  of  FIG. 2 ) by console support software ( 6  of  FIG. 2 )) through an encoded status information. 
         [0052]    The credential of executing a specific task on a specific target system by user A is checked. In addition, the ordinary users&#39; access &amp; operation permissions and credentials are setup by the administrator of the system with supervisor user or special privileges. If user A is not permitted to perform any task on such target system or is not permitted to perform such task on any system, the task execution will fail and user A will be notified via net ( 11  or  12  of  FIG. 2 ). Otherwise, the task will be carried out by the corresponding thread on the target system, which is either a Control system ( 2  of  FIG. 2 ) or a System Units ( 3  of  FIG. 2 ). If there is a need, the console supporting software ( 6  of  FIG. 2 ) will send the results (or data) back to web-console ( 9  of  FIG. 2 ). When a task is either failed nor succeeded, the threads of console supporting software ( 6  of  FIG. 2 ) will release the locks acquired for this task. 
         [0053]    As matter of the fact, console support software ( 6 ) provides a mechanism to allow privileged user from web browser ( 9 ) to create user account and profile for security and authentication after login to Control system ( 2 ); and said user security and authentication profile is stored on Control system. The first privileged user can be created during installation of console support software ( 6 ) on Control system ( 2 ). In addition console support software will provide each login user a web based computer user work environment, which is a dynamic private work space, from where each user can locate resource for perform various tasks. 
         [0054]    If the task needs to be executed on the Control system ( 2  of  FIG. 2 ), the thread created based on console supporting software ( 6  of  FIG. 2 ) will carry out this task. The threads of console support software ( 6  of  FIG. 2 ) also need to determine if they need to create another thread to execute this task. In one embodiment, if there is a need, another thread will be created to execute this task in background. Once the task is finished, the corresponding locks and the corresponding entry of user space task list will be released by console supporting software ( 6  of  FIG. 2 ). 
         [0055]    If a task needs to be executed on a System Units ( 3  of  FIG. 2 ), the console supporting software ( 6  of  FIG. 2 ) will transmit the task information via net 2  ( 12  of  FIG. 2 ) to the service software module ( 8  of  FIG. 2 ) of target System Units ( 3  of  FIG. 2 ). The thread based on service software module ( 8  of  FIG. 2 ) of target System Units ( 3  of  FIG. 2 ) will carry out this task. The service software module ( 8  of  FIG. 2 ) on target System Units ( 3  of  FIG. 2 ) needs to determine if an additional thread needs to be created in order to execute such task in background. If there is a need, an additional thread is created to execute this task. Once the task is finished on the target System Units ( 3  of  FIG. 2 ), the corresponding status of the task execution is transmitted back to the console supporting software ( 6  of  FIG. 2 ) of the Control system ( 2  of  FIG. 2 ). Upon receiving the task finished status, the locks associated with the thread of console support software ( 6  of  FIG. 2 ) for that task are released. 
         [0056]    Further, as matter of the facts, the console support software of Control system might provide response to each corresponding web browser at any appropriate time after receiving each said task independent to the final result of said task. In one embodiment, the response can be sent immediately after receiving task, in another embodiment the response can be sent if detect any fault during execution of a task, in one more embodiment the response can be sent after the task is finished, and so forth. Also, the response could be either the result or a status of a task, and the response will be encoded with any suitable programming languages such as HTML, XML, WML, Javascript, C, C++, F Java and so forth without limit. In one embodiment, the status information may indicate where the result is deposited so that said user can initiate another task to access and view the result. In another embodiment, the status may indicate the failure of executing said task. 
         [0057]    In one embodiment, said System Units may send encoded status information or result directly to said user&#39;s web browser if System Units has configured with web server software as shown in  FIG. 8   
         [0058]    The Task Issued from Web-Console 
         [0059]    The multiple concurrent tasks issued from a web-console ( 9  of  FIG. 2 ) by a user could be any of the followings: 
         [0060]    a) Move or transmit data such as a multiple gigabytes of file or other data in any form from any point or any system to another point or system within CCDSVM ( FIG. 2 ) or access said data or data file. Perform upload file from user local system to Control system, and perform download file from any system within CCDSVM to user&#39;s local system, where the user&#39;s web browser resides. 
         [0061]    b) Configure, partition and assign entire storage system (raid/disk) within CCDSVM ( FIG. 2 ). 
         [0062]    c) Setup authentication of specific user from a specific web-console ( 1  of  FIG. 2 ) with certain privilege for entire CCDSVM or for a specific system, which could be any System Units ( 3  of  FIG. 2 ) or a Control system ( 2  of  FIG. 2 ). Setting up the steps of authentication process for any specific services on one or more specific System Units can also be implemented. Setup group account with one or multiple users and setup group privileges. 
         [0063]    d) Monitor and display activities and status for networks, storage, CPUs, processes and threads in CCDSVM. 
         [0064]    e) Create file system, file and directory structures, and all other related data file operations on either the control management system ( 2  of  FIG. 2 ) or System Units ( 3  of  FIG. 2 ). 
         [0065]    f) Create, editing, and save documents, and share documents through network. 
         [0066]    g) Organize meeting, perform instant post document or withdraw document in group meeting model or in 1-to-1 model, Create message, send, or save message in group meeting model or in 1-to-1 model. 
         [0067]    h) And all other kind of tasks and operations, which might be run in command line user interactive work (operating) environment or native window based user interactive work environment. 
         [0000]    It shall be notice that said user security authentication profile is stored in a form of database. 
         [0068]    The capability of providing user with the multiple concurrent simultaneous operations and tasks on web console ( 9  of  FIG. 2 ) has indicated that this invention has created a web-based user work environment on top of an existing operating system of a single or multiple computer systems. Further, this is a consistent working environment for a computer system since it allows a user to access exact the same working environment through the web-console ( 9  of  FIG. 2 ), which could be a web browser either on a native system or from other remote systems. 
         [0069]    User Login 
         [0070]    The user-login mechanism is also supported by the console supporting software ( 6  of  FIG. 2 ). The web-console ( 9  of  FIG. 2 ) obtains a login web page from the console supporting software ( 6  of  FIG. 2 ) via the net ( 11  &amp;  12  of  FIG. 2 ). Once the user provides an account name and a password for the login page on the web-console ( 9  of  FIG. 2 ), the authentication information is sent to the console supporting software ( 6  of  FIG. 2 ) for validation. Upon successful validating the user account and password information, the console support software ( 6  of  FIG. 2 ) sends all necessary system information such as IP address to web-console ( 9  of  FIG. 2 ), which includes the information of Control system ( 2  of  FIG. 2 ) and System Units ( 3  of  FIG. 2 ). 
         [0071]    The Maximum Tasks 
         [0072]    The maximum multiple concurrent simultaneous tasks that can be initiated from web-consoles are determined by console support software modules ( 6  of  FIG. 2 ), and they are also determined based on the needs and the capacity of the Control system ( 2  of  FIG. 2 ). For example if supporting a user account on control system requires 1.35 MB of memory, a control system having 1 GB memory can roughly support 740 concurrent users. 
         [0073]    The Credential Checking 
         [0074]    The credential of a user includes the permission to access all or partial systems, or a single system within CCDSVM. The credential further includes the permission to run all tasks or partial tasks, which lists the previous section of “The Task Issued From Web-Console”. It also includes the permission of accessing specific size of storage volumes. For example, user B may be granted a permission to run tasks on systems X, Y, and Z. Another user C may be granted a permission to run tasks on entire system in the CCDSVM environment. User C might be allow to get system status on systems X, Y, and Z only while user B allows to run all tasks on systems X, Y, and Z. Each system mentioned here could be a Control system or any of System Units. This basically represents a two-level authentication policy and checking. The first level is the security imposed by the Control system ( 2  of  FIG. 2 ) and the second level is the security imposed by System Units ( 3  of  FIG. 2 ). 
         [0075]    The Web-Server Interface Software Module 
         [0076]    The web-server interfacing software module ( 5  of  FIG. 2 ) is responsible to get information from or send information to web server software ( 7  of  FIG. 2 ). It also interacts with control management modules ( 4  of  FIG. 2 ) via inter-process communication and communicates with service module ( 8  of  FIG. 2 ) of System Units ( 3  of  FIG. 2 ) via net 2  ( 12  of  FIG. 2 ). 
         [0077]    The Control Management Software Module 
         [0078]    The control management module ( 4  of  FIG. 2 ) on the Control system ( 2  of  FIG. 2 ) is responsible for communicating with System Units ( 3  of  FIG. 2 ). It sends data to or receives data from System Units via net 2  ( 12  of  FIG. 2 ). It also provides information of System Units ( 3  of  FIG. 2 ) to web interface software modules ( 5  of  FIG. 2 ) of the Control system ( 2  of  FIG. 2 ) via an inter-process communication mechanism. 
         [0079]    The Layered CCDSVM Structure 
         [0000]    To be more efficiently support multiple concurrent tasks over a larger number of System Units ( 3  of  FIG. 2 ), the CCDSVM can be organized into a multi-layer structure ( FIG. 6 ). With this layered structure, the CCDSVM can be sub-divided into different groups. For example, each level-2 Control system could function as both Control system ( 2  of  FIG. 2 ) to the System Units below it and could function as a System Units ( 3  of  FIG. 2 ) for level-1 Control system. Therefore, it must have related software modules for both the Control system and System Units. 
         [0080]    The present invention has been described in considerable details with reference to certain examples. However, other versions and examples are also possible, therefore, the spirit of this invention shall not be limited to these examples and/or embodiments.