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:
Sep. 19, 2006
Filed:
Mar. 30, 2000
Method for transaction log failover merging during asynchronous operations in a data storage network
Stephen J. Sicola, Monument, CO (US);
Susan G. Elkington, Colorado Springs, CO (US);
Michael D. Walker, Colorado Springs, CO (US);
Stephen J. Sicola, Monument, CO (US);
Susan G. Elkington, Colorado Springs, CO (US);
Michael D. Walker, Colorado Springs, CO (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A disaster-tolerant data backup and remote copy system which is implemented as a controller-based replication of one or more LUNs (logical units) between two remotely separated pairs of array controllers connected by redundant links. In the situation wherein an array controller fails during an asynchronous copy operation, the partner array controller uses a 'micro log' stored in mirrored cache memory to recover transactions, in order, which were 'missed' by the backup storage array when the array controller failure occurred.