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:
Jun. 12, 2012
Filed:
Jan. 28, 2009
Shira Ben Dor, Givat Shmuel, IL;
Amir Kredi, Tel Aviv-Jaffa, IL;
Avied Zlotnick, Galil Tachton, IL;
Henry Butterworth, Hampshire, GB;
Shira Ben Dor, Givat Shmuel, IL;
Amir Kredi, Tel Aviv-Jaffa, IL;
Avied Zlotnick, Galil Tachton, IL;
Henry Butterworth, Hampshire, GB;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A color control node includes an interface for communicating with multiple storage controllers, wherein the storage controllers maintain a primary storage system at a primary site and a secondary storage system at a secondary site; and wherein the storage controllers maintain a current color and associate all writes with the current color without polling the color control node. The color control node also includes operational capability for issuing a polling command to instruct the storage controllers to poll the color control node for the current color prior to associating each write with a new color; receiving an acknowledgment of receipt of the polling command; changing the current color to a new color responsive to receiving the acknowledgment; issuing a storage command to the storage controllers indicating the new color; and instructing each storage controller to cease polling the color control node for the current color.