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. 24, 2006
Filed:
Jun. 14, 2001
Lee Mcbryde, Mt. Airy, MD (US);
Gordon Manning, Ellicott City, MD (US);
Dave Illar, Ellicott City, MD (US);
Richard Williams, Ellicott City, MD (US);
Michael Piszczek, Columbia, MD (US);
Lee McBryde, Mt. Airy, MD (US);
Gordon Manning, Ellicott City, MD (US);
Dave Illar, Ellicott City, MD (US);
Richard Williams, Ellicott City, MD (US);
Michael Piszczek, Columbia, MD (US);
Datadirect Networks, Inc., Chatsworth, CA (US);
Abstract
A performance optimized RAID Levelstorage access controller with a unique XOR engine placement at the host/network side of the cache. The invention utilizes multiple data communications channels and a centralized cache memory in conjunction with this unique XOR placement to maximize performance and fault tolerance between a host network and data storage. Positioning the XOR engine at the host/network side of the cache allows the storage devices to be fully independent. Since the XOR engine is placed in the data path and the parity is generated in real-time during cache write transfers, the bandwidth overhead is reduced to zero. For high performance RAID controller applications, a system architecture with minimal bandwidth overhead provides superior performance.