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    Method, system, and program for asynchronous copy
    1.
    发明申请
    Method, system, and program for asynchronous copy 有权
    用于异步复制的方法，系统和程序

    公开(公告)号：US20050071586A1

    公开(公告)日：2005-03-31

    申请号：US10675317

    申请日：2003-09-29

    申请人： Robert Bartfai ,  William Micka ,  Thomas Jarvis ,  Olympia Gluck ,  Michael Factor ,  Irit Dolev ,  Warren Stanley ,  Martin Tross ,  Sam Werner ,  Aviad Zlotnick ,  Gail Spear

    发明人： Robert Bartfai ,  William Micka ,  Thomas Jarvis ,  Olympia Gluck ,  Michael Factor ,  Irit Dolev ,  Warren Stanley ,  Martin Tross ,  Sam Werner ,  Aviad Zlotnick ,  Gail Spear

    IPC分类号： G06F12/00 ,  G06F12/08

    CPC分类号： G06F12/0835 ,  G06F12/0826

    摘要： Disclosed is a technique for maintaining consistency of data. One or more blocks of data identified by a first structure are copied to form a consistent set of data. While not acknowledging completion of write requests to any blocks of data, a second structure is created, wherein the second structure indicates which blocks of data are modified while the consistent set of data is being formed. Also disclosed is a technique for asynchronous copy. Indicators are updated in a first structure for one or more blocks of data, wherein each indicator in the first structure indicates whether a corresponding block of data was modified since the block of data was last sent to remote storage. While copying the blocks of data identified by the indicators in the first structure as having been modified since the blocks of data were last sent to remote storage, indicators in a second structure are updated for the one or more blocks of data, wherein each indicator in the second structure indicates whether a corresponding block of data was modified while a consistent set of data is being formed.

    摘要翻译： 公开了一种保持数据一致性的技术。 由第一结构标识的一个或多个数据块被复制以形成一致的数据集。 在不向任何数据块确认写请求的完成的情况下，创建第二结构，其中第二结构指示在形成一致的数据集时修改数据块。 还公开了用于异步复制的技术。 指示符以用于一个或多个数据块的第一结构进行更新，其中第一结构中的每个指示符指示是否修改了相应的数据块，因为数据块最后发送到远程存储。 由于数据块最后发送到远程存储，将第一结构中由指示符标识的数据块复制为已被修改，因此对于一个或多个数据块更新了第二结构中的指示符，其中每个指示符 第二结构指示在形成一致的一组数据时是否修改相应的数据块。

    METHOD, SYSTEM AND PROGRAM FOR FORMING A CONSISTENCY GROUP
    2.
    发明申请
    METHOD, SYSTEM AND PROGRAM FOR FORMING A CONSISTENCY GROUP 失效
    用于形成一致性组的方法，系统和程序

    公开(公告)号：US20070028065A1

    公开(公告)日：2007-02-01

    申请号：US11470612

    申请日：2006-09-06

    申请人： Gail Spear ,  Robert Bartfai ,  Edward Lin ,  William Micka ,  Olympia Gluck ,  Aviad Zlotnick ,  Michael Factor ,  Thomas Jarvis ,  Sam Werner

    发明人： Gail Spear ,  Robert Bartfai ,  Edward Lin ,  William Micka ,  Olympia Gluck ,  Aviad Zlotnick ,  Michael Factor ,  Thomas Jarvis ,  Sam Werner

    IPC分类号： G06F12/16

    CPC分类号： G06F11/2064 ,  G06F11/2071 ,  G06F11/2074 ,  G06F2201/82

    摘要： Provided are a method, system, and program for forming a consistency group of data. Information is provided on a consistency group relationship indicating a plurality of slave controllers and, for each indicated slave controller, a slave storage unit managed by the slave controller. A command is transmitted to each slave controller in the consistency group relationship to cause each slave controller to transmit data in the slave storage unit to a remote storage in a manner that forms the consistency group. A determination is made as to whether all the slave controllers successfully transmitted the data in the slave storage units that is part of the consistency group to the remote storage.

    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。 根据指示多个从控制器的一致性组关系提供信息，并且对于每个指示的从控制器，由从控制器管理的从存储单元提供信息。 以一致性组关系将命令发送到每个从控制器，以使每个从控制器以形成一致性组的方式将从属存储单元中的数据传输到远程存储器。 确定所有从属控制器是否成功地将作为一致性组的一部分的从属存储单元中的数据发送到远程存储器。

    Point in time copy between data storage systems
    6.
    发明申请
    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：US20050251634A1

    公开(公告)日：2005-11-10

    申请号：US10839034

    申请日：2004-05-05

    申请人： Helena Burton ,  Michael Factor ,  Timothy Griffin ,  Thomas Jarvis ,  William Micka ,  Yoram Novick ,  Gail Spear ,  Sam Werner

    发明人： Helena Burton ,  Michael Factor ,  Timothy Griffin ,  Thomas Jarvis ,  William Micka ,  Yoram Novick ,  Gail Spear ,  Sam Werner

    IPC分类号： G06F13/10 ,  G06F3/06 ,  G06F11/20 ,  G06F12/16

    CPC分类号： G06F3/065 ,  G06F3/0611 ,  G06F3/067 ,  G06F11/1458 ,  G06F2201/82

    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。

    Method, system and article of manufacture for recovery from a failure in a cascading PPRC system
    7.
    发明申请
    Method, system and article of manufacture for recovery from a failure in a cascading PPRC system 失效
    用于从级联PPRC系统故障中恢复的方法，系统和制造

    公开(公告)号：US20050081091A1

    公开(公告)日：2005-04-14

    申请号：US10674866

    申请日：2003-09-29

    申请人： Robert Bartfai ,  Michael Factor ,  Gail Spear ,  William Micka

    发明人： Robert Bartfai ,  Michael Factor ,  Gail Spear ,  William Micka

    IPC分类号： G06F11/00 ,  G06F11/20

    CPC分类号： G06F11/2082 ,  G06F11/2058 ,  G06F11/2071

    摘要： A method of recovery from a data storage system failure in a data storage system having a host computer writing data to a first storage unit with a first storage controller synchronously mirroring the data to a second storage unit, and with a second storage controller asynchronously mirroring the data to a third storage unit. The method begins with the detection of a failure associated with the first storage unit. Upon detection of the error or failure associated with the first storage unit, the synchronous data mirroring relationship between the first storage unit and the second storage unit is terminated and the host is directed to write data updates directly to the second storage unit. Upon correction of the failure associated with the first storage unit, the asynchronous mirroring of data updates from the second storage unit to the third storage unit is suspended and synchronous mirroring of the data updates in a reverse direction, from the second storage unit to the first storage unit, is commenced. When a full duplex state is reached between the first storage unit and the second storage unit, the synchronous PPRC relationship with the first storage volume mirroring data to the second storage volume may be reestablished and host I/O writes to the first storage unit may be resumed.

    摘要翻译： 一种从具有主机的数据存储系统中的数据存储系统故障恢复的方法，所述数据存储系统具有主计算机，用第一存储控制器向第一存储单元写入数据，所述第一存储控制器将所述数据同步地镜像到第二存储单元，并且与第二存储控制器异步镜像 数据到第三存储单元。 该方法开始于检测与第一存储单元相关联的故障。 在检测到与第一存储单元相关联的错误或故障时，第一存储单元和第二存储单元之间的同步数据镜像关系被终止，并且主机将数据更新直接写入第二存储单元。 在校正与第一存储单元相关联的故障时，暂停从第二存储单元到第三存储单元的数据更新的异步镜像，并且数据的同步镜像沿相反方向从第二存储单元更新到第一存储单元 存储单元，开始。 当在第一存储单元和第二存储单元之间达到全双工状态时，可以重新建立与第一存储卷镜像数据到第二存储卷的同步PPRC关系，并且可以向第一存储单元写入主机I / O 恢复。

    METHOD, SYSTEM AND ARTICLE OF MANUFACTURE FOR RECOVERY FROM A FAILURE IN A CASCADING PPRC SYSTEM
    8.
    发明申请
    METHOD, SYSTEM AND ARTICLE OF MANUFACTURE FOR RECOVERY FROM A FAILURE IN A CASCADING PPRC SYSTEM 失效
    制造PPRC系统故障恢复的方法，系统和文章

    公开(公告)号：US20070061531A1

    公开(公告)日：2007-03-15

    申请号：US11555810

    申请日：2006-11-02

    申请人： Robert Bartfai ,  Michael Factor ,  Gail Spear ,  William Micka

    发明人： Robert Bartfai ,  Michael Factor ,  Gail Spear ,  William Micka

    IPC分类号： G06F12/16

    CPC分类号： G06F11/2082 ,  G06F11/2058 ,  G06F11/2071

    摘要： A method of recovery from a data storage system failure in a data storage system having a host computer writing data to a first storage unit with a first storage controller synchronously mirroring the data to a second storage unit, and with a second storage controller asynchronously mirroring the data to a third storage unit. Upon detection of an error or failure associated with the first storage unit, the synchronous data mirroring relationship between the first storage unit and the second storage unit is terminated and the host is directed to write data updates directly to the second storage unit. Upon correction of the failure associated the asynchronous mirroring of data updates from the second storage unit to the third storage unit is suspended and synchronous mirroring of the data updates in a reverse direction, from the second storage unit to the first storage unit, is commenced.

    摘要翻译： 一种从具有主机的数据存储系统中的数据存储系统故障恢复的方法，所述数据存储系统具有主计算机，用第一存储控制器向第一存储单元写入数据，所述第一存储控制器将所述数据同步地镜像到第二存储单元，并且与第二存储控制器异步镜像 数据到第三存储单元。 在检测到与第一存储单元相关联的错误或故障时，第一存储单元和第二存储单元之间的同步数据镜像关系终止，并且主机将数据更新直接写入第二存储单元。 在对与从第二存储单元到第三存储单元的数据更新的异步镜像相关联的故障进行校正时，数据从第二存储单元向第一存储单元反向的更新的同步镜像开始。