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. 24, 2016
Filed:
Dec. 24, 2013
Hitachi, Ltd., Tokyo, JP;
Makio Mizuno, Tokyo, JP;
Norio Shimozono, Tokyo, JP;
Sadahiro Sugimoto, Tokyo, JP;
Naoya Okada, Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
A storage systemincludes a storage apparatusand a storage controllerconfigured to control the storage apparatus. The storage controller adds a predetermined flagto every predetermined size of data requested by a host computer to be written to the storage system, and stores the resultant data in a cache memoryC. Upon detecting a predetermined trigger for saving, the storage controller stores, in a nonvolatile memory, data with the flag added thereto out of the data stored in the cache memory. The storage controller detects, as unsaved data information, a data size and a storage location for data with no flag added thereto out of the data on the cache memory, and stores the detected unsaved data information in the nonvolatile memory in association with the data with the flag added thereto.