Method, system, and program for establishing and using a point-in-time copy relationship
    1.
    发明授权
    Method, system, and program for establishing and using a point-in-time copy relationship 有权
    建立和使用时间点复制关系的方法,系统和程序

    公开(公告)号:US07024530B2

    公开(公告)日:2006-04-04

    申请号:US10388568

    申请日:2003-03-14

    IPC分类号: G06F12/00

    摘要: Provided are a method, system, and program for establishing a point-in-time copy. A source relationship data structure and target relationship data structure are generated when establishing a point-in-time copy relationship between source and target storage areas, wherein the source and target relationship data structures each include an indicator for each source storage area and corresponding target storage area in the point-in-time copy relationship. The source and target relationship data structures are initialized to set the indicator for each source storage area and corresponding target storage area in the point-in-time copy relationship to a first value. A determination is made that data was written to one target storage area after establishing the point-in-time copy relationship. The indicators in the source and target relationship data structures corresponding to the source storage area and corresponding target storage area to which data was written are set to a second value.

    摘要翻译: 提供了一种用于建立时间点副本的方法,系统和程序。 当建立源和目标存储区域之间的时间点复制关系时,产生源关系数据结构和目标关系数据结构,其中源和目标关系数据结构各自包括每个源存储区的指示符和对应的目标存储 区域在时间点复制关系。 初始化源和目标关系数据结构,将每个源存储区域的指示符和时间点复制关系中的对应目标存储区域设置为第一个值。 确定在建立时间点复制关系后,将数据写入一个目标存储区域。 将与源数据存储区域对应的源和目标关系数据结构中的指示符和写入数据的对应目标存储区域设置为第二值。

    Method, system, and program for mirroring data among storage sites
    2.
    发明授权
    Method, system, and program for mirroring data among storage sites 有权
    用于在存储站点之间镜像数据的方法,系统和程序

    公开(公告)号:US07188222B2

    公开(公告)日:2007-03-06

    申请号:US10674845

    申请日:2003-09-29

    IPC分类号: G06F12/16 G06F11/00

    摘要: Provided are a method, system, and program for forming a consistency group of data. A command is received to form a consistency group with respect to data received at a first storage site that is mirrored to a second storage site. A first data structure is provided indicating updates to the first storage site not included in the consistency group that are received after the command and a second data structure is provided indicating updates to the first storage site in the consistency group to be formed. A command is transmitted to cause data copied to the second storage site that is part of the consistency group to be copied to a third storage site. Indication is received when the data in the second storage site that is part of the consistency group is copied to the third storage site.

    摘要翻译: 提供了用于形成一致性数据组的方法,系统和程序。 接收命令以形成与在第二存储站点镜像的第一存储站点处接收到的数据的一致性组。 提供第一数据结构,指示不包括在该命令之后接收到的一致性组中的第一存储站点的更新,并且提供指示将要形成的一致性组中的第一存储站点的更新的第二数据结构。 传送一个命令,将复制到作为一致性组一部分的第二个存储站点的数据复制到第三个存储站点。 当作为一致性组的一部分的第二个存储站点中的数据被复制到第三个存储站点时,接收到指示。

    Point in time copy between data storage systems
    5.
    发明授权
    Point in time copy between data storage systems 失效
    在数据存储系统之间的时间点复制

    公开(公告)号:US07133989B2

    公开(公告)日:2006-11-07

    申请号:US10839034

    申请日:2004-05-05

    IPC分类号: G06F11/00

    摘要: A target data storage system comprises a peer-to-peer communication link interface for linking the target to a source data storage system, and data storage for storing point in time copy data received from the source via the peer-to-peer communication link interface. Information is established at the target relating logical identification of the point in time copy data to point in time copy data stored at the target and to point in time copy data stored at the source, such that the information references the data storage system having requested point in time copy data. A controller of the target accesses requested point in time copy data at the target if the table indicates that the requested point in time copy data is available at the target; else obtains the requested point in time copy data from the source via the peer-to-peer communication link interface.

    摘要翻译: 目标数据存储系统包括用于将目标链接到源数据存储系统的点对点通信链路接口以及用于通过对等通信链路接口从源接收的时间点复制数据的数据存储器 。 在目标处建立信息,将时间点的复制数据的时间点的逻辑识别与存储在目标上的时间复制数据相关联,并将时间点复制存储在源中的数据,使得信息引用具有请求点的数据存储系统 及时复制数据。 如果该表指示所请求的时间点复制数据在目标上可用,则请求时间点的目标访问控制器复制数据在目标上; 否则通过对等通信链路接口从源中获得请求的时间点复制数据。