File sharing method and file sharing system
First Claim
Patent Images
1. A file sharing system comprising:
- a child server computer for managing a plurality of disk devices;
a parent server computer for managing the child server computer; and
a plurality of client computers,whereinthe disk devices store a large file divided,the client computers, the child server computer, and the parent server computer are connected through a network, andthe plurality of disk devices, each of the client computers, and each of the child server computers are connected through a channel switch.
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Accused Products
Abstract
To perform rapid I/O processing for a large file reducing load on a server computer and a network.
The client computer accesses a disk device directly to perform input/output processing relating to a file operation through a channel switch based on real file information obtained by the client computer from a parent server computer upon a file-open operation. Further, a child server computer manages the disk device, which enables different real files in a same virtual file to be processed an I/O at the same time by a plurality of client computers.
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Citations
9 Claims
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1. A file sharing system comprising:
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a child server computer for managing a plurality of disk devices; a parent server computer for managing the child server computer; and a plurality of client computers, wherein the disk devices store a large file divided, the client computers, the child server computer, and the parent server computer are connected through a network, and the plurality of disk devices, each of the client computers, and each of the child server computers are connected through a channel switch. - View Dependent Claims (2, 3, 4, 5)
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6. A file sharing method with which each child server computer managing a plurality of disk devices individually, a parent server computer managing the child server computer, and a plurality of client computers are connected communicably, and with which a large file is divided to be stored in the disk devices, the method comprising the steps of:
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connecting the client computer, the child server computer and the parent server computer through a network, and the plurality of disk devices, the respective client computers, and the respective child server computers are connected through a channel switch; and registering in advance real file information specifying a structure of a real file system in each of the disk devices, a structure of a virtual file system over the real file systems, and stored position of the real file in the virtual file system, into the parent server computer as file management database; wherein the client computer sends a request to the parent server computer through the network so as to obtain the real file information corresponding to a target file from the parent server computer upon the file-open operation, and the client computer accesses directly the disk device through the channel switch so as to perform input/output processing relating to a file operation based on the real file information. - View Dependent Claims (7, 8, 9)
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Specification