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:
Dec. 24, 2019
Filed:
Jan. 05, 2016
Hitachi, Ltd., Chiyoda-ku, Tokyo, JP;
Takahiro Kito, Tokyo, JP;
Ran Ogata, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Generating a snapshot of a volume storing a snapshot and Suppressing response time. When receiving from a host computer write data to be written into a target slot in a target volume among multiple volumes, a processor adds to management information a fact that data in the target slot in the target volume has not been finalized, writes the write data into a target cache area in a memory, and transmits a response to the host computer. Before referring to the target data in the target slot of the target volume, the processor determines whether or not the target data has been finalized on the basis of the management information. When the target data is determined as not having been finalized, the processor performs a finalization process for finalizing the target data and refers the target data.