Remote copying of updates to primary and secondary storage locations subject to a copy relationship
    3.
    发明申请
    Remote copying of updates to primary and secondary storage locations subject to a copy relationship 有权
    将副本存储位置远程复制到复制关系

    公开(公告)号:US20070220223A1

    公开(公告)日:2007-09-20

    申请号:US11384798

    申请日:2006-03-17

    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。

    Bandwidth utilization in a PPRC system
    5.
    发明申请
    Bandwidth utilization in a PPRC system 失效
    PPRC系统中的带宽利用率

    公开(公告)号:US20050114566A1

    公开(公告)日:2005-05-26

    申请号:US10719536

    申请日:2003-11-20

    Abstract: Methods, system and computer program product are provided to improve the efficiency of data transfers in a PPRC environment. A block of data to be transferred is divided into tracks. Each track is allocated to a data mover task control block (TCB) with a master TCB being assigned to supervise the data mover TCBs. The tracks are then transferred from the primary storage controller to the secondary controller in a piped fashion over a link coupling the primary and secondary storage controllers. However, the usage of resources is monitored by a resource management algorithm and, if too many TCBs are being used for a transfer or if the supply of data mover TCBs is exhausted, the transfer is automatically switched to a serial, non-piped transfer with the master TCB serving as the data mover TCB for the remaining tracks. In addition, the various links coupling the primary and secondary storage controllers is monitored to determine which link will provide the fastest transfer. If, during a transfer of tracks over one link, a faster link is identified, the transfer may be switched to the second, faster link.

    Abstract translation: 提供了方法,系统和计算机程序产品,以提高PPRC环境中数据传输的效率。 要传输的数据块被划分为轨道。 每个轨道被分配给数据移动器任务控制块(TCB),其中主TCB被分配以监视数据移动器TCB。 然后,通过连接主存储控制器和辅助存储控制器的链路,将轨道以管道方式从主存储控制器传送到次级控制器。 然而,资源的使用通过资源管理算法进行监控,如果太多的TCB被用于传输,或者如果数据移动器TCB的供应耗尽,则传输将自动切换到串行,非管道传输, 主TCB用作剩余磁道的数据移动器TCB。 此外,监视耦合主存储控制器和辅助存储控制器的各种链路,以确定哪个链路将提供最快的传输。 如果在通过一个链路传送轨道的过程中识别出更快的链路,则可以将传输切换到第二个更快的链路。

    Autonomic recovery of PPRC errors detected by PPRC peer
    6.
    发明申请
    Autonomic recovery of PPRC errors detected by PPRC peer 失效
    PPRC对等体检测到PPRC错误的自动恢复

    公开(公告)号:US20050055602A1

    公开(公告)日:2005-03-10

    申请号:US10658054

    申请日:2003-09-08

    CPC classification number: G06F11/1482 G06F11/2082

    Abstract: A method for initiating a data storage facility recovery process in a data processing system having a first peer data storage facility and a second peer data storage facility communicating with the first peer data storage facility by a communication link. The method of initiating a recovery process is invoked by one peer data storage facility upon another peer data storage facility operating under a peer to peer remote copy (PPRC) protocol. Data copied from a first peer data storage facility to a second peer data storage facility is monitored for errors. Upon detection of an error by one peer data storage facility, recovery and data collection operations are initiated on the other peer data storage facility. Preferably, the initiation of recovery and data collection operations occurs out of band, over a second communication link between the peer data storage facilities.

    Abstract translation: 一种用于在具有通过通信链路与第一对等数据存储设备通信的第一对等数据存储设施和第二对等数据存储设备的数据处理系统中启动数据存储设备恢复过程的方法。 启动恢复过程的方法由一个对等数据存储设施调用于在对等远程复制(PPRC)协议下操作的另一个对等数据存储设备。 监视从第一对等数据存储设施复制到第二对等数据存储设施的数据以获得错误。 在通过一个对等数据存储设备检测到错误时,恢复和数据收集操作在另一个对等数据存储设备上启动。 优选地,通过对等数据存储设施之间的第二通信链路,恢复和数据收集操作的发起在带外发生。

    Instant virtual copy to a primary mirroring portion of data
    9.
    发明申请
    Instant virtual copy to a primary mirroring portion of data 失效
    将即时虚拟副本复制到数据的主镜像部分

    公开(公告)号:US20050268054A1

    公开(公告)日:2005-12-01

    申请号:US10856197

    申请日:2004-05-27

    CPC classification number: G06F11/2074 G06F11/2069 G06F2201/84 Y10S707/99953

    Abstract: Techniques are provided for performing a copy operation. An instant virtual copy operation is issued from a first portion of data to a primary mirroring portion of data, wherein the primary mirroring portion of data corresponds to a secondary mirroring portion of data, and wherein the primary mirroring portion of data and the secondary mirroring portion of data are in a mirroring relationship. The mirroring relationship is transitioned to a duplex pending state in response to determining that the mirroring relationship is in a full duplex state. When the mirroring relationship is in a duplex pending state, each block of data involved in the instant virtual copy operation is transferred from the primary mirroring portion of data to the secondary mirroring portion of data.

    Abstract translation: 提供了执行复印操作的技术。 从数据的第一部分向数据的主镜像部分发出即时虚拟复制操作,其中数据的主镜像部分对应于数据的次镜像部分,并且其中数据的主镜像部分和次镜像部分 的数据处于镜像关系。 响应于确定镜像关系处于全双工状态,镜像关系被转换到双工挂起状态。 当镜像关系处于双工挂起状态时,即时虚拟复制操作中涉及的每个数据块从数据的主镜像部分传送到数据的次镜像部分。

    Method, system, and program for asynchronous copy
    10.
    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

    CPC classification number: G06F12/0835 G06F12/0826

    Abstract: 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.

    Abstract translation: 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。

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