Previewing File Information Over a Network
a file information and network technology, applied in the field of file sharing and file access over networks, can solve the problems of unacceptably slow response times of file server protocols when opening and writing files, and increasing network bandwidth will not help to alleviate the performance problem in wans, so as to facilitate various file accesses
Inactive Publication Date: 2017-01-12
CA TECH INC
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- Description
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AI Technical Summary
Benefits of technology
The present invention provides a way to work with file managers and wide area file systems. This helps to make file accesses faster and easier, by allowing file information to be previewed and saved in a server at one location and quickly accessed by a file manager at another location.
Problems solved by technology
While workers can easily share gigabytes of project data on a local-area network (LAN) using standard file-server technology, such is not the case with workers in remote offices connected over wide-area networks (WANs).
With respect to file sharing over WANS, standard. file server protocols provide unacceptably slow response times when opening and writing files.
Furthermore, because data movement RPCs make up such a small percentage of the communications, increasing network bandwidth will not help to alleviate the performance problem in WANs.
Method used
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[0026]The following example embodiments are described and illustrated in conjunction with apparatuses, methods, and systems which are meant to be examples and illustrative, not limiting in scope.
[0027]A. Network Environment
[0028]As discussed in the background above, WAFS systems often include one or more EFG appliances (or servers), which are placed at remote offices, and one or more CS appliances (or servers) that allow storage resources to be accessed by the EFG appliances. FIG. 1 shows at a high level such an arrangement, which might be used with an embodiment of the present invention. In particular, FIG. 1 shows a WAN 101 connecting a CS appliance 104 to two EFG appliances 102. In turn, the CS appliance 104 is connected, via a LAN or other network, to a file server 105 and the EFG appliances 102 are connected, again via a LAN or other network, to workstations 103.
[0029]In particular embodiments, the CS appliance 104 and the EFG appliances 102 communicate over the WAN 101 using ...
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An example embodiment of the present invention provides a process for opening and reading a file over a network, including a WAN. In the example embodiment, an edge file gateway appliance (or server) receives a request from an application such as a tile manager to open a file cached with the edge file gateway appliance at one point on a network and stored on a file server connected to a central server appliance (or server) at another point on the network. The edge file gateway appliance then forwards the request to open the file to the central server appliance, along with any offsets and lengths stored from any previous requests to read the file. The central server appliance responds by sending any file data described in the stored offsets and lengths to the edge file gateway appliance. Then when the edge file gateway appliance receives a read request from an application, the edge file gateway appliance stores the offset and length for the request, if a predefined storage limit is not exceeded, and attempts to satisfy the request from cached file data. The edge file gateway appliance fetches the entire file from the CS appliance if a predefined file limit is exceeded.
Description
TECHNICAL FIELD[0001]The present disclosure relates to file sharing and file access over networks.BACKGROUND OF THE INVENTION[0002]While workers can easily share gigabytes of project data on a local-area network (LAN) using standard file-server technology, such is not the case with workers in remote offices connected over wide-area networks (WANs). With respect to file sharing over WANS, standard. file server protocols provide unacceptably slow response times when opening and writing files.[0003]All major file-sharing protocols were designed for LAN environments where clients and servers are located in the same building or campus, including: NFS (Network File System, used for Unix / Linux environments), CIFS (Common Internet File System used for Windows environments), and IPX / SPX (Internetwork. Packet Exchange / Sequenced Packet Exchange, used for Novell environments). The assumption that the client and the server would be in close proximity led to a number of design decisions that do n...
Claims
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IPC IPC(8): G06F3/06G06F17/30G06F12/0813
CPCG06F3/0608G06F12/0813G06F3/0643G06F3/0652G06F2212/463G06F17/30203G06F2212/1044G06F2212/154G06F2212/163G06F3/067G06F16/172G06F16/183G06F16/951
Inventor VIDWANS, HRISHIKESH A.
Owner CA TECH INC