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:
Nov. 11, 2008
Filed:
Jan. 09, 2004
James Chien-chiung Chen, Tucson, AZ (US);
Minh-ngoc Le Huynh, San Jose, CA (US);
Chung Man Fung, San Francisco, CA (US);
Patricia Ching LU, Fremont, CA (US);
Edwin K. Scott, Tucson, AZ (US);
Carol Santich Mellgren, Tucson, AZ (US);
Richard Anthony Ripberger, Tucson, AZ (US);
James Chien-Chiung Chen, Tucson, AZ (US);
Minh-Ngoc Le Huynh, San Jose, CA (US);
Chung Man Fung, San Francisco, CA (US);
Patricia Ching Lu, Fremont, CA (US);
Edwin K. Scott, Tucson, AZ (US);
Carol Santich Mellgren, Tucson, AZ (US);
Richard Anthony Ripberger, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Provided are a method, system, and program for copying tracks between a primary controller and secondary controller. A track is received from the primary controller that is part of a copy job comprising a sequence of tracks to copy along with a sequence number of the received track and a context number identifying computational resources in the primary controller used to transmit the track, sequence number, and context number. The context number and sequence number transmitted with the track are used to determine if a track preceding the received track was written to storage. The secondary-controller writes the received track to storage if the track preceding the received track was written to storage.