Storage system and a method for unilaterally administering data exchange with the storage system

A storage system, comprising:

• a storage unit storing therein file data;
• a plurality of file servers effecting file processing on the storage unit in response to a received request;
• a file server administrating node unitarily administrating transfer processing for transferring a client request received via an external network as said received request to one of the plurality of file servers and reply processing for sending a reply message in response to the client request to a client corresponding to the client request;
• an internal network interconnecting the storage unit, the plurality of file servers and the file server administrating node so that communication is effected in the internal network, the internal network being connected with a shared memory, and the shared memory being accessible from the file server administrating node, the plurality of file servers and a name server;
• a request analyzing unit analyzing contents of the client request received;
• a request transferring unit transferring the client request received to a specified file server from the plurality of file servers in accordance with the analysis by the request analyzing unit;
• a main storage unit caching the file data of the storage unit, whereby one of the plurality of the file servers functions as a cache server for executing file processing in the main storage unit in accordance with received requests;
• wherein the functions as the cache server include caching file data having request occurrence frequency within a constant time period equal to or more than a predetermined level, and
• the request transferring unit is arranged to transfer a request corresponding to the file data, having the request occurrence frequency equal to or more than the predetermined level, to the cache server.

A storage system, comprising:

• a storage unit storing therein file data;
• a plurality of file servers effecting file processing on the storage unit in response to a received request;
• a file server administrating node unitarily administrating transfer processing for transferring a client request received via an external network as said received request to one of the plurality of file servers and reply processing for sending a reply message in response to the received client request to a client corresponding to the client request;
• an internal network interconnecting the storage unit, the plurality of file servers and the file server administrating node so that communication is effected in the internal network, the internal network being connected with a name server for unitarily administrating names of file data handled by the plurality of file servers;
• a request analyzing unit analyzing contents of the client request received;
• a request transferring unit transferring the client request received to a specified file server from the plurality of file servers in accordance with the analysis by the request analyzing unit;
• a main storage unit caching the file data of the storage unit, whereby one of the plurality of the file servers functions as a cache server for executing file processing in the main storage unit in accordance with received requests;
• wherein the unit functions as the cache server include caching file data having request occurrence frequency within a constant time period equal to or more than a predetermined level, and
• the request transferring unit is arranged to transfer a request corresponding to the file data, having the request occurrence frequency equal to or more than the predetermined level, to the cache server.

A storage system, comprising:

• a storage unit storing therein file data;
• a plurality of file servers effecting file processing on the storage unit in response to a received request;
• a file server administrating node unitarily administrating transfer processing for transferring a client request received via an external network as said received request to one of the plurality of file servers and reply processing for sending a reply message in response to the client request to a client corresponding to the client request;
• an internal network interconnecting the storage unit, the file servers and the file administrating node so that communication is effected in the internal network, the internal network being connected with a name server for unitarily administrating names of file data handled by the file servers
• a request analyzing unit analyzing contents of the client request received;
• a request transferring unit transferring the client request received to a specified file server from the plurality of file servers in accordance with the analysis by the request analyzing unit;
• a header offset value analyzing unit analyzing the client request so as to calculate a header offset value indicative of a position of a boundary between a header portion and a substantial file data portion, and
• a header offset value adding unit adding the header offset value obtained by the header offset value analyzing unit to the client request which is transferred to one of the plurality of file servers.

A storage system comprising,

• a storage unit storing therein file data;
• a plurality of file servers effecting file processing on the storage unit in response to a received request;
• a file server administrating node unitarily administrating transfer processing for transferring a client request received via an external network as said received request to one of the plurality of file servers and reply processing for sending a reply message in response to the client request to a client corresponding to the client request;
• an internal network interconnecting the storage unit, the file servers and the file server administrating node so that communication is effected in the internal network, the internal network being connected with a shared memory, the shared memory being accessible from the file server administrating node and the file servers
• a request analyzing unit analyzing contents of the client request received;
• a request transferring unit transferring the client request received to a specified file server from the plurality of file servers in accordance with the analysis by the request analyzing unit;
• a main storage unit caching the file data of the storage unit, whereby one of the plurality of the file servers functions as a cache server for executing file processing in the main storage unit in accordance with received requests;
• wherein the functions as the cache server include caching file data having the request occurrence frequency within a constant time period equal to or more than the predetermined level, and
• the request transferring unit is arranged to transfer a request regarding the file data, having the request occurrence frequency equal to or more than the predetermined level, to the cache server.

A storage system, comprising:

• a storage unit storing therein file data;
• a plurality of file servers effecting file processing on the storage unit in response to a received request;
• a file server administrating node unitarily administrating transfer processing for transferring a client request received via an external network as said received request to one of the plurality of file servers and reply processing for sending a reply message in response to the client request to a client corresponding t the client request;
• an internal network interconnecting the storage unit, the plurality of file servers and the file server administrating node so that communication is effected in the internal network, the internal network being connected with a shared memory, the shared memory being accessible from the file server administrating node and the plurality of the file servers;
• a request analyzing unit analyzing contents of the client request received;
• a request transferring unit transferring the client request received to a specified file server from the plurality of file servers in accordance with the analysis by the request analyzing unit;
• a header offset value analyzing unit analyzing the client request so as to calculate a header offset value indicative of a position of the boundary between a header portion and a substantial file data portion, and
• a header offset value adding unit adding the header offset value obtained by the header offset value analyzing unit to the client request which is transferred to one if the plurality of file servers.

A storage system, comprising:

• a storage unit storing therein file data;
• a plurality of file servers effecting file processing on the storage unit in response to a received request;
• a file server administrating node unitarily administrating transfer processing for transferring a client request received via an external network as said received request to one of the plurality of file servers and reply processing for sending a reply message in response to the client request to a client corresponding to the client request;
• an internal network interconnecting the storage unit, the plurality of file servers and the file server administrating node so that communication is effected in the internal network;
• a request analyzing unit analyzing contents of the client request received;
• a request transferring unit transferring the client request received to a specified file server from the plurality of file servers in accordance with the analysis by the request analyzing unit;
• a main storage unit caching the file data of the storage unit, whereby one of the plurality of the file servers functions as a cache server for executing file processing in the main storage unit in accordance with received requests;
• and
• wherein the functions as the cache server include caching file data having request occurrence frequency within a constant time period equal to or more than a predetermined level, and
• the request transferring unit is arranged to transfer a request corresponding to the file data, having the request occurrence frequency equal to or more than the predetermined level, to the cache server.

A storage system, comprising:

• a storage unit storing therein file data;
• a plurality of file servers effecting file processing on the storage unit in response to a received request;
• a file server administrating node unitarily administrating transfer processing for transferring a client request received via an external network as said received request to one of the plurality of file servers and reply processing for sending a reply message in response to the client request to a client corresponding to the client request;
• an internal network interconnecting the storage unit, the file servers and the file server administrating node so that communication is effected in the internal network;
• a request analyzing unit analyzing contents of the client request received;
• a request transferring unit transferring the client request received to a specified file server from the plurality of file servers in accordance with the analysis by the request analyzing unit;
• a header offset value analyzing unit analyzing the client request so as to calculate a header offset value indicative of a position of the boundary between a header portion and a substantial file data portion, and
• a header offset value adding unit adding the header offset value obtained by the header offset value analyzing unit to the client request which is transferred to the file server.