Grid Computing
Grid Computing main idea is to include hardware and software resources distributed servers, databases, storage devices and so on, through the Internet in series to form a virtual super-computer, and then share the computing resources.
Grid computing in the past used for academic research in the industry In addition to Sun, IBM pushing grid computing technology to the enterprise market, the enterprise software vendor Oracle has for the first time into the Grid Computing applications. For enterprises, the use of existing scientific and technological costs just a small part of that is able to effective use of existing equipment and networks linking information resources with which to obtain more powerful computing power.
Grid Computing also allows scattered throughout the virtual organization, to coordinate their resource-sharing, while meeting the needs of a large number of computing. The collection of distributed computing resources from, Grid Computing can be via the network management organization that can be used in any computing resources, thus reducing the server's idle time.
Within this framework, enterprises can directly access the computer, data, software or storage devices. In addition, who can share, share what resources and under what conditions can allow sharing, Grid Computing also provides stringent control functions and a clear role definitions.
In fact, as early as 10 years ago, Grid Computing has been verified over high-speed computing. Research units in the past, when the implementation of project operations, multi-use matrix vector calculation basis; and even the post-mainframe arrangement of the internal CPU are all adopted the board with the grid manner.
Suppose, now an operations center in Taiwan and Singapore also have a computing center, when Singapore computing capacity and capability can not load, the system will automatically be transferred to Taiwan to handle, and the use of the district of idle computing power and space, computing after the completion of return the original host system. If applied to business models, service providers can be calculated in accordance with usage, like water power as a fee.
Grid delivery grid distribution
Distributed grid technology, the goal is to produce multiple systems network in order to a single recipient for content distribution. Thousands of users can use the technology from the Internet, download music, video and other formats of digital entertainment content.
Grid distribution technology to promote Napsterr and Gnutella and other content distribution model solutions appear. In this framework, when a user requests a certain content, a computer network will be searched, until you find a system to distribute the contents of this one up.
The above example is one to one program: Once the match successfully, a server, a client distribution of content to receive. However, the distribution grid is many-to-program: then by the number of servers to distribute content to a client, it will be more rapid content distribution.
The distribution grid and the gradual emergence of another technology - grid computing is not the same. Take IBM, and Sun, for example, grid computing has a network of multiple computers to simultaneously solve the same problems. Therefore, this technology is about the computing process, while the grid distribution is related to content distribution.
Group 3 FAX
Developed by the CCITT fax protocol (PROTOCOL), supports data compression (COMPRESSION), maximum transmission rate of 9600 BPS, there are two kinds of resolution: 1. 203X98 DPI2. 203X196 DPIGROUP 4 fax using ISDN protocol.
Groupware Network
Groupware, an office or working group to use the exchange of information between members and document management software. Groupware over a network (NETWORK) the exchange of information among users can be arranged itinerary and confirmation of meeting time, release announcements and documents e-mail transmission.
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