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:
Aug. 05, 2008
Filed:
May. 27, 2004
Sam Clark Werner, Scottsdale, AZ (US);
Gail Andrea Spear, Tucson, AZ (US);
Warren Keith Stanley, Loveland, CO (US);
Robert Francis Bartfai, Tucson, AZ (US);
William Frank Micka, Tuscon, AZ (US);
Sam Clark Werner, Scottsdale, AZ (US);
Gail Andrea Spear, Tucson, AZ (US);
Warren Keith Stanley, Loveland, CO (US);
Robert Francis Bartfai, Tucson, AZ (US);
William Frank Micka, Tuscon, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Techniques are provided for performing a copy operation. An instant virtual copy operation is issued from a first portion of data to a primary mirroring portion of data, wherein the primary mirroring portion of data corresponds to a secondary mirroring portion of data, and wherein the primary mirroring portion of data and the secondary mirroring portion of data are in a mirroring relationship. The mirroring relationship is transitioned to a duplex pending state in response to determining that the mirroring relationship is in a full duplex state. When the mirroring relationship is in a duplex pending state, each block of data involved in the instant virtual copy operation is transferred from the primary mirroring portion of data to the secondary mirroring portion of data.