公开(公告)号：WO2014060884A4

公开(公告)日：2014-06-26

申请号：PCT/IB2013058886

申请日：2013-09-26

Applicant: IBM ,  IBM UK ,  IBM CHINA INVEST CO LTD

Inventor： SHEPPARD JACOB LEE ,  NIELSEN KARL ALLEN ,  LOVRIEN KURT ALLEN ,  GRUSY ELLEN JOANNE

IPC: G11C29/00

CPC classification number: G06F9/4401 ,  G06F3/0619 ,  G06F3/0632 ,  G06F3/067 ,  G06F3/0689 ,  G06F9/44505

Abstract: A plurality of data arrays are coupled to a plurality of nodes via a plurality of adapters. The plurality of adapters discover the plurality of data arrays during startup, and information about the plurality of data arrays are communicated to corresponding local nodes of the plurality of nodes, wherein the local nodes broadcast the information to other nodes of plurality of nodes. A director node of the plurality of nodes determines which data arrays of the plurality of data arrays are a current set of global metadata arrays, based on the broadcasted information.

Abstract translation: 多个数据阵列通过多个适配器耦合到多个节点。 多个适配器在启动期间发现多个数据阵列，并且关于多个数据阵列的信息被传送到多个节点中的对应本地节点，其中本地节点将信息广播到多个节点的其他节点。 基于广播信息，多个节点中的导向器节点确定多个数据阵列中的哪些数据阵列是当前全局元数据阵列集合。

公开(公告)号：GB2494950B

公开(公告)日：2013-08-28

申请号：GB201211748

申请日：2012-07-03

Applicant: IBM

Inventor： LOVRIEN KURT ALLEN ,  GUPTA LOKESH MOHAN ,  BROWN THERESA MARY ,  HATFIELD BRIAN DAVID ,  GRUSY ELLEN JOANNE ,  SABA RAUL EDUARDO ,  MELLGREN CAROL SANTICH

IPC: G06F11/14 ,  G06F3/06

Abstract: A storage controller receives a request to establish a point-in-time copy operation by placing a space efficient source volume in a point-in-time copy relationship with a space efficient target volume, wherein subsequent to being established the point-in-time copy operation is configurable to consistently copy the space efficient source volume to the space efficient target volume at a point in time. A determination is made as to whether any track of an extent is staging into a cache from the space efficient target volume or destaging from the cache to the space efficient target volume. In response to a determination that at least one track of the extent is staging into the cache from the space efficient target volume or destaging from the cache to the space efficient target volume, release of the extent from the space efficient target volume is avoided.

公开(公告)号：GB2494950A

公开(公告)日：2013-03-27

申请号：GB201211748

申请日：2012-07-03

Applicant: IBM

Inventor： LOVRIEN KURT ALLEN ,  GUPTA LOKESH MOHAN ,  BROWN THERESA MARY ,  HATFIELD BRIAN DAVID ,  GRUSY ELLEN JOANNE ,  SABA RAUL EDUARDO ,  MELLGREN CAROL SANTICH

IPC: G06F11/14 ,  G06F3/06

Abstract: A storage controller receives a request 402 to establish a point-in-time copy operation for backup purposes in space-efficient, thin-provisioned storage volumes, by placing a source volume 404 in a relationship with a target volume 406, where each volume comprises a number of extents 408a-p, 410a-q constructed from tracks 412-418. After being established, the operation is arranged to consistently copy the source volume to the target volume at a point in time. During the copy operation, the system checks whether any track of an extent is staging into a cache from the target volume or destaging from the cache to the target volume 420. If that is found to be the case, release of that extent from the target volume is avoided. An extent which is awaiting staging or destaging may also be avoided. This reduces the risk of utilising conflicted extents and speeds up the backup process.