公开(公告)号：GB2571871A

公开(公告)日：2019-09-11

申请号：GB201908513

申请日：2017-11-13

Applicant: IBM

Inventor： MATTHEW WARD ,  MARK LIPETS ,  ANTHONY CIARAVELLA ,  MICHAEL GAGNER ,  THERESA MARY BROWN ,  CAROL MELLGREN ,  THEODORE TIMOTHY HARRIS JR ,  GREGORY MCBRIDE ,  NICOLAS MARC CLAYTON

IPC: G06F11/14 ,  G06F11/16 ,  G06F11/20

Abstract: Asynchronous local and remote generation of consistent first and second point-in-time snap copy volumes provides for generating in a primary system, a first point-in-time snap copy volume of a primary volume of the primary system, and generating in a secondary system, a second point-in-time snap copy volume utilizing a secondary volume in the secondary system. Mirror data from a first data unit(volume) to a second data unit at a remote location (610). Copy data of the first data unit to a third data unit to provide a point-in-time copy of the first data unit (614). Copy data of the second data unit to a fourth data unit to provide a point-in-time copy of the second data unit (620). Synchronize the fourth data unit to third data unit wherein both the third and fourth data units provide point-in-time copies of the data of the first data unit as of the first point-in-time (624). Synchronizing logic synchronizes the first and second point-in-time snap copy volumes to be consistent with each other as of a particular point-in-time notwithstanding an asynchronous mirror relationship between the primary volume of the primary system and the secondary volume of the secondary system.

公开(公告)号：GB2571871B

公开(公告)日：2020-03-04

申请号：GB201908513

申请日：2017-11-13

Applicant: IBM

Inventor： MATTHEW WARD ,  MARK LIPETS ,  ANTHONY CIARAVELLA ,  MICHAEL GAGNER ,  THERESA MARY BROWN ,  CAROL MELLGREN ,  THEODORE TIMOTHY HARRIS JR ,  GREGORY MCBRIDE ,  NICOLAS MARC CLAYTON

IPC: G06F11/14 ,  G06F11/16 ,  G06F11/20

Abstract: In accordance with one embodiment, asynchronous local and remote generation of consistent first and second point-in-time snap copy volumes provides for generating in a primary system, a first point-in-time snap copy volume of a primary volume of the primary system, and generating in a secondary system, a second point-in-time snap copy volume utilizing a secondary volume in the secondary system. Synchronizing logic synchronizes the first and second point-in-time snap copy volumes to be consistent with each other as of a particular point-in-time notwithstanding an asynchronous mirror relationship between the primary volume of the primary system and the secondary volume of the secondary system. Other features and aspects may be realized, depending upon the particular application.