公开(公告)号：GB2554605B

公开(公告)日：2018-09-26

申请号：GB201719444

申请日：2016-05-03

Applicant: IBM

Inventor： JOHN GLENN THOMPSON ,  DAVID PETERSEN ,  GAIL ANDREA SPEAR ,  ALAN GEORGE MCCLURE ,  MICHAEL FRANKENBERG ,  MICHAEL BRANDNER ,  DANIEL ROMAN

IPC: G06F11/20

Abstract: Provided are a computer program product, system, and method for performing a failover between a first storage system and a second storage system. Data is synchronized between the first storage system and the second storage system. A failover is performed from the first storage system to the second storage system in response to a failover event at the first storage system while synchronizing the data. A determination is made that a first storage unit of the first storage system is inoperable and that that a second storage unit of the first storage system is operable in response to the failover event. In response to determining that the second storage unit is operable, a resynchronization is initiated to copy updates to a second storage unit of the second storage system mirroring the second storage unit of the first storage system to the second storage unit of the first storage system.

公开(公告)号：GB2554605A

公开(公告)日：2018-04-04

申请号：GB201719444

申请日：2016-05-03

Applicant: IBM

Inventor： JOHN GLENN THOMPSON ,  DAVID PETERSEN ,  GAIL ANDREA SPEAR ,  ALAN GEORGE MCCLURE ,  MICHAEL FRANKENBERG ,  MICHAEL BRANDNER ,  DANIEL ROMAN

IPC: G06F11/20

Abstract: Provided are a computer program product, system, and method for performing a failover between a first storage system(102a) and a second storage system(102b). Data is synchronized between the first storage system(102a) and the second storage system(102b). A failover is performed from the first storage system(102a) to the second storage system(102b) in response to a failover event at the first storage system(102a) while synchronizing the data. A determination is made that a first storage unit of the first storage system(102a) is inoperable and that a second storage unit of the first storage system(102a) is operable in response to the failover event. In response to determining that the second storage unit is operable, a resynchronization is initiated to copy updates to a second storage unit of the first storage system(102a) by mirroring the second storage unit of the second storage system(102b) to the second storage unit of the first storage system(102a).