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:
Jul. 19, 2016
Filed:
Jan. 10, 2014
Hitachi, Ltd., Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In an information system including: first and second storage apparatuses executing synchronous copying of data to a counterpart storage device; a first quorum apparatus coupled to the first and the second storage apparatuses; and a second quorum apparatus coupled to the first and the second storage apparatuses, wherein the first and the second storage apparatuses are each configured to perform control to determine whether to execute the I/O request in accordance with an execution feasibility setting, and in health check processing that is repeatedly executed, the first and the second storage apparatuses are each configured to store survival information thereof in the first and the second quorum apparatuses, check whether the survival information of the counterpart storage apparatus is able to be checked from any one of the first and the second quorum apparatuses, and set the execution feasibility setting of the storage apparatus.