Method, system, and program for managing a relationship between one target volume and one source volume

US7047390B2 · kind B2 · utility

Assignee

• International Business Machines Corporation · US

Inventors

• Michael Factor · Haifa, IL
• Amiram Hayardeny · Or Akiva, IL
• Thomas Charles Jarvis · Tucson, US
• Gail A. Spear · Tucson, US
• William Frank Micka · Tucson, US
• Sivan Tal · Yoqneam Illit, IL
• Dalit Tzafrir · Haifa, IL
• Rivka M. Matosevich · Zichron Ya'akov, IL
• Sheli Rahav · Haifa, IL
• Ifat Nuriel · Haifa, IL
• Shachar Fienblit · Zichron Ya'akov, IL
• Svetlana Shukevich · Yoqneam Illit, IL

Key dates

• Filing date: Jun 17, 2003
• Grant date: May 16, 2006
• Expiry date: Mar 22, 2024

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S707/99954
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

Provided are a method, system, and program for managing a relationship between one target volume and one source volume. For each of the source volume and target volume, the memory includes: (i) at least one element, wherein each element represents a range of sequential data units in the volume; (ii) at least one relationship entry, wherein each relationship entry represents one relationship; (iii) at least one element pointer associating one element with one relationship entry, wherein the data units represented by the element are part of the relationship represented by the relationship entry that the pointer associates with the element; and (iv) one relationship pointer for each relationship entry associating the relationship entry with volume metadata, wherein the volume metadata provides information on the relationship represented by the relationship entry.