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:
Feb. 11, 1997
Filed:
Mar. 01, 1993
Mitsuru Akizawa, Hachioji, JP;
Kanji Kato, Tokorozawa, JP;
Hiroyoshi Suzuki, Yokohama, JP;
Toshiyuki Maki, Isehara, JP;
Hirofumi Yamashita, Kokubunji, JP;
Akira Kito, Ebina, JP;
Hidenori Yamada, Hadano, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Computer Engineering Co., Ltd., Kanagawa, JP;
Abstract
In a computer system having an interface with an I/O bus given disconnect/reconnect functions and a plurality of magnetic disk subsystems connected with the I/O bus, control divides a file at a disk access time with reference to disk management information, file management information and file descriptor translation information to read/write a plurality of such files asynchronously. Thus, high speed file access can be realized by only the plurality of magnetic disk subsystems without requiring any special control hardware. A corresponding relation between subfiles in a virtual directory and the application request file can be taken to construct the directory, thus making the divided storage transparent to the application.