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:
Oct. 25, 2016
Filed:
Aug. 20, 2014
Qlogic, Corporation, Aliso Viejo, CA (US);
Parag Gokhale, Pune, IN;
QLOGIC, Corporation, Aliso Viejo, CA (US);
Abstract
Systems and methods for improved caching with data recovery are disclosed. A write input/output (I/O) request is received from an application to write to a storage area network (SAN) LUN that is cached by a first intelligent storage adapter (ISA) using a cache LUN and mirrored by a second ISA using a mirror LUN. Write through caching is enabled, when either the first ISA or the second ISA has failed. The write I/O request is proceed by a surviving ISA from among the first ISA and the second ISA, where the surviving ISA sends the write I/O to the SAN LUN. Data is copied from a local storage device of the surviving ISA to a recovery LUN; and periodically data is also flushed from the local storage of the surviving ISA to the SAN LUN.
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