The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 1996
Filed:
May. 27, 1994
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
395441 ; 395438 ; 39518204 ; 395600 ; 39549701 ; 39549702 ; 364D / ; 364243 ; 3642436 ; 364268 ; 3642681 ; 3642685 ;
Abstract
In a data processing system to which a large number of disk drive units are connected, data in the whole or part area of a file are multiplexed and distributed into a plurality of disk drive units when the file is opened, and the multiplex data of the file are deleted when the file is closed. Among the multiplex data, data shortest in access time or striped data shortest in transfer time is selected to be accessed. When data multiplexing is applied only to the part area, the data storage capacity of the system can be reduced more remarkably.