US 7,366,835 B2 Apr. 29, 2008
(54) DATA ACCESS RESPONDING SYSTEM,
STORAGE SYSTEM, CLIENT APPARATUS,
CACHE APPARATUS, AND METHOD FOR
ACCESSING DATA ACCESS RESPONDING
(75) Inventor: Kazuichi Oe, Kawasaki (JP)
(73) Assignee: Fujitsu Limited, Kawasaki (JP)
( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 308 days.
(21) Appl. No.: 11/114,227
(22) Filed: Apr. 26, 2005
(65) Prior Publication Data
US 2006/0041614 Al Feb. 23, 2006
Related U.S. Application Data
(63) Continuation of application No. PCT/JP03/06354, filed on May 21, 2003.
A control apparatus provides a transfer instruction to one of storage apparatus and a cache apparatus, in which relevant data is stored, when receiving an access request from a client apparatus for the data for which the storage location is managed; and the one of the storage apparatus and the cache apparatus receiving the transfer instruction directly returns a reply message, to the client apparatus, having information of the storage location of the data added thereto, which data the access request requests.
7 Claims, 25 Drawing Sheets