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Preserving System Integrity Across Detach and Reattach of a Geographic Mirror Copy

IP.com Disclosure Number: IPCOM000012262D
Original Publication Date: 2003-Apr-23
Included in the Prior Art Database: 2003-Apr-23

Publishing Venue

IBM

Abstract

The following describes a programming method that allows a physical copy of user data (like an independent auxiliary storage pool (IASP)) on a system (production system) to be made on a separate set of disk drives (geographic mirror copy) and used on a second system (target system) without any data integrity problems if the copy is destroyed and the production copy of the data is switched to the second system or another copy of the updated user data is made at a later time to be accessed on the second system.