公开(公告)号：US20070220223A1

公开(公告)日：2007-09-20

申请号：US11384798

申请日：2006-03-17

Applicant: Kenneth Boyd ,  Lisa Gundy ,  Nils Kaving ,  Robert Kern ,  Gregory McBride ,  Alan McClure ,  William Micka ,  David Petersen ,  Gail Spear ,  Warren Stanley

Inventor： Kenneth Boyd ,  Lisa Gundy ,  Nils Kaving ,  Robert Kern ,  Gregory McBride ,  Alan McClure ,  William Micka ,  David Petersen ,  Gail Spear ,  Warren Stanley

IPC: G06F12/16

CPC classification number: G06F11/2058 ,  G06F11/2066 ,  G06F11/2069 ,  G06F11/2082

Abstract: Provided are a method, system, and program for remote copying of updates to primary and secondary storage locations subject to a copy relationship. A first copy relationship is established between first and second storage locations in a first storage system and second storage system, respectively, wherein updates to the first storage locations are copied to the second storage locations. A second copy relationship is established between the first storage locations in the first copy relationship and third storage locations in a third storage system, wherein updates to the first storage locations are indicated in a first bitmap. A suspended third copy relationship is established between the second storage locations in the first copy relationship and the third storage locations, wherein updates to the second storage locations are indicated in a second bitmap. Updates are copied from the first or second storage locations to the third storage locations, wherein the first or second bitmap is capable of being used to determine updates for the first or second storage locations to copy to the third storage locations.

Abstract translation: 提供了一种方法，系统和程序，用于远程复制受副本关系的主要和次要存储位置的更新。 分别在第一存储系统和第二存储系统中的第一和第二存储位置之间建立第一复制关系，其中将第一存储位置的更新复制到第二存储位置。 在第一复制关系中的第一存储位置和第三存储系统中的第三存储位置之间建立第二复制关系，其中在第一位图中指示对第一存储位置的更新。 在第一复制关系中的第二存储位置和第三存储位置之间建立暂停的第三复制关系，其中在第二位图中指示对第二存储位置的更新。 将更新从第一或第二存储位置复制到第三存储位置，其中第一或第二位图能够用于确定第一或第二存储位置的更新以复制到第三存储位置。