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:
May. 22, 2018
Filed:
Feb. 19, 2016
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Takeshi Watanabe, Kawasaki, JP;
Kazuhiko Ikeuchi, Kawasaki, JP;
Chikashi Maeda, Kawasaki, JP;
Kazuhiro Urata, Kawasaki, JP;
Yukari Tsuchiyama, Kawasaki, JP;
Guangyu Zhou, Kawasaki, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
In a storage control apparatus, a control unit determines whether prefetching data on a first data amount basis from a plurality of storage devices to a storage unit causes an imbalance in the numbers of commands issued to the storage devices. When determining that the prefetching causes the imbalance, the control unit prefetches the data on a second data amount basis such as to balance the numbers of commands issued to the storage devices. With this approach, the storage control apparatus creates a different imbalance of the number of read commands issued for each execution of prefetch staging, so as to prevent a fixed imbalance in which more read commands are always issued to a specific storage device.