公开(公告)号：GB2578846B

公开(公告)日：2020-10-21

申请号：GB202000451

申请日：2018-07-24

Applicant: IBM

Inventor： JOSHUA CRAWFORD ,  NEDLAYA YAZZIE FRANCISCO ,  GREGORY MCBRIDE ,  NICOLAS MARC CLAYTON ,  CAROL MELLGREN ,  THERESA MARY BROWN ,  MATTHEW WARD ,  THEODORE TIMOTHY HARRIS JR ,  DAMIAN TRUJILLO

IPC: G06F11/20 ,  G06F3/06 ,  G06F16/27

公开(公告)号：GB2577022A

公开(公告)日：2020-03-11

申请号：GB201918847

申请日：2018-05-22

Applicant: IBM

Inventor： MATTHEW WARD ,  CAROL MELLGREN ,  THERESA MARY BROWN ,  JOSHUA CRAWFORD ,  NICOLAS MARC CLAYTON ,  GREGORY MCBRIDE

IPC: G06F11/20 ,  G06F3/06

Abstract: Provided are a computer program product, system, and method for processing a space release command when mirroring data at a source storage to a target storage. A space release command is received to free a release space in the source storage while transferring changed data in a consistency group. A determination is made as to whether a transfer time to transfer remaining consistency group data in the consistency group for the release space that has not been transferred exceeds a response time to process a space release command. The remaining consistency group data in the release space is transferred to the target storage in response to determining that the transfer time does not exceed the response time. The release space for the space release command is freed in response to transferring the consistency group data in the release space to the target storage.

公开(公告)号：GB2578846A

公开(公告)日：2020-05-27

申请号：GB202000451

申请日：2018-07-24

Applicant: IBM

Inventor： JOSHUA CRAWFORD ,  NEDLAYA YAZZIE FRANCISCO ,  GREGORY MCBRIDE ,  NICOLAS MARC CLAYTON ,  CAROL MELLGREN ,  THERESA MARY BROWN ,  MATTHEW WARD ,  THEODORE TIMOTHY HARRIS JR ,  DAMIAN TRUJILLO

IPC: G06F11/20 ,  G06F3/06 ,  G06F16/27

Abstract: A primary storage controller for use with a host and a primary storage system at a first location, the primary storage system having a primary storage controller and at least one storage unit controlled by the primary storage controller and configured to store a plurality of data units, and a secondary storage system at a second location remote from the first location, the secondary storage system having a secondary storage controller and at least one storage unit controlled by the secondary storage controller and configured to store a plurality of data units, the primary storage controller comprising data replication logic which includes data mirroring logic, consistency group logic, snap copy generation logic, state determination logic and delay logic.

公开(公告)号：GB2581947B

公开(公告)日：2021-01-20

申请号：GB202010560

申请日：2018-12-12

Applicant: IBM

Inventor： JOSHUA CRAWFORD ,  DAVID BRENT SCHREIBER ,  MATTHEW WARD

IPC: G06F3/06

Abstract: A synchronization of data is performed via remote copy operations from a primary storage controller to a secondary storage controller, wherein input/output (I/O) requests are received at the primary storage controller from a host both via a bus interface and a network interface while the remote copy operations are in progress. A first data structure stores identification of tracks written via the network interface that are to be copied from the primary storage controller to the secondary storage controller for the synchronization of data. A second data structure stores identification of tracks written via the bus interface that are to be copied from the primary storage controller to the secondary storage controller for the synchronization of data.

公开(公告)号：GB2581947A

公开(公告)日：2020-09-02

申请号：GB202010560

申请日：2018-12-12

Applicant: IBM

Inventor： JOSHUA CRAWFORD ,  DAVID BRENT SCHREIBER ,  MATTHEW WARD

IPC: G06F3/06

Abstract: A synchronization of data is performed via remote copy operations from a primary storage controller to a secondary storage controller, wherein input/output (I/O) requests are received at the primary storage controller from a host both via a bus interface and a network interface while the remote copy operations are in progress. A first data structure stores identification of tracks written via the network interface that are to be copied from the primary storage controller to the secondary storage controller for the synchronization of data. A second data structure stores identification of tracks written via the bus interface that are to be copied from the primary storage controller to the secondary storage controller for the synchronization of data.

公开(公告)号：GB2577022B

公开(公告)日：2020-08-12

申请号：GB201918847

申请日：2018-05-22

Applicant: IBM

Inventor： MATTHEW WARD ,  CAROL MELLGREN ,  THERESA MARY BROWN ,  JOSHUA CRAWFORD ,  NICOLAS MARC CLAYTON ,  GREGORY MCBRIDE

IPC: G06F11/20 ,  G06F3/06

Abstract: Provided are a computer program product, system, and method for processing a space release command when mirroring data at a source storage to a target storage. A space release command is received to free a release space in the source storage while transferring changed data in a consistency group. A determination is made as to whether a transfer time to transfer remaining consistency group data in the consistency group for the release space that has not been transferred exceeds a response time to process a space release command. The remaining consistency group data in the release space is transferred to the target storage in response to determining that the transfer time does not exceed the response time. The release space for the space release command is freed in response to transferring the consistency group data in the release space to the target storage.