METHOD, SYSTEM, AND PROGRAM FOR DATA SYNCHRONIZATION
    1.
    发明申请
    METHOD, SYSTEM, AND PROGRAM FOR DATA SYNCHRONIZATION 失效
    用于数据同步的方法,系统和程序

    公开(公告)号:US20070130216A1

    公开(公告)日:2007-06-07

    申请号:US11548220

    申请日:2006-10-10

    IPC分类号: G06F17/30

    摘要: Disclosed is a technique for data synchronization. A first identifier for a portion of data on a primary volume is determined, wherein a unique identifier is associated with each portion of data at the primary volume. A second identifier for a portion of corresponding data at a secondary volume is determined, wherein a unique identifier is associated with each portion of data at the secondary volume. The first and second identifiers are compared. When the first and second identifiers do not match, the portion of corresponding data at the secondary volume in a storage device is replaced with the portion of data at the primary volume.

    摘要翻译: 公开了一种用于数据同步的技术。 确定主卷上的数据的一部分的第一标识符,其中唯一标识符与主卷上的数据的每个部分相关联。 确定次级卷的对应数据的一部分的第二标识符,其中唯一标识符与辅助卷的每个数据部分相关联。 比较第一和第二标识符。 当第一和第二标识符不匹配时,存储设备中次级卷上的相应数据的部分被主卷上的数据部分所替换。

    Apparatus and method to adjust data transfer rate
    2.
    发明申请
    Apparatus and method to adjust data transfer rate 失效
    调整数据传输速率的装置和方法

    公开(公告)号:US20080065849A1

    公开(公告)日:2008-03-13

    申请号:US11981952

    申请日:2007-10-31

    IPC分类号: G06F12/00

    摘要: A method to optimize the transmission of data from (N) primary backup appliances interconnected to a plurality of second backup appliances by a single communication link, wherein (N) is greater than 1, by transferring a data set to one or more secondary backup appliances by two or more of the (N) primary backup appliances using the communication link, and completing those transfers of the data sets by the two or more primary backup appliances at the same time.

    摘要翻译: 一种通过单个通信链路来优化从(N)个主要备用设备互连到多个第二备用设备的数据传输的方法,其中(N)大于1,通过将数据集传送到一个或多个辅助备用设备 由两个或更多个使用通信链路的主备用设备,并且同时由两个或更多个主备用设备完成数据集的传送。

    Apparatus and method to adjust data transfer rate
    4.
    发明申请
    Apparatus and method to adjust data transfer rate 失效
    调整数据传输速率的装置和方法

    公开(公告)号:US20050050287A1

    公开(公告)日:2005-03-03

    申请号:US10652021

    申请日:2003-08-29

    摘要: A method to adjust the data transfer rate for one of (N) primary backup appliances. The method forms by a first primary backup appliance at least one consistent transactions set. The first primary backup appliance receives the (n)th status signal, and the (n+1)th status signal from each of the other (N−1) primary backup appliances. The method calculates the (n)th effective bandwidth for each of the (N) primary backup appliances, the (n)th time to complete for each of the (N) primary backup appliances, and the (n)th effective aggregate bandwidth for all (N) primary appliances. If the (n)th time to complete for the first primary backup appliance is greater than the (n)th time to complete for each of the other (N−1) primary backup appliances, then the method provides at least one consistent transactions set from the first primary backup appliance to a first secondary backup appliance with no delay.

    摘要翻译: 一种用于调整(N)个主备份设备之一的数据传输速率的方法。 该方法由第一个主备份设备形成至少一个一致的事务集。 第一个主要备份设备从其他(N-1)个主备份设备接收第(n)个状态信号和第(n + 1)个状态信号。 该方法计算(N)个主备份设备中的每个(N)个主备份设备的第(n)个有效带宽,(N)个主备份设备中的每一个完成的第(n)个时间,以及(N) 所有(N)主要电器。 如果第一个主备份设备完成的第(n)个时间大于其他(N-1)个主备份设备的第(n)个时间完成,则该方法提供至少一个一致的事务集 从第一个主备份设备到第一个辅助备份设备,不会延迟。

    Apparatus and Method to Adjust Data Transfer Rate
    5.
    发明申请
    Apparatus and Method to Adjust Data Transfer Rate 失效
    调整数据传输速率的装置和方法

    公开(公告)号:US20070006024A1

    公开(公告)日:2007-01-04

    申请号:US11531249

    申请日:2006-09-12

    IPC分类号: G06F11/00

    摘要: A method to adjust the data transfer rate for one of (N) primary backup appliances. The method forms by a first primary backup appliance at least one consistent transactions set. The first primary backup appliance receives the (n)th status signal, and the (n+1)th status signal from each of the other (N-1) primary backup appliances. The method calculates the (n)th effective bandwidth for each of the (N) primary backup appliances, the (n)th time to complete for each of the (N) primary backup appliances, and the (n)th effective aggregate bandwidth for all (N) primary appliances. If the (n)th time to complete for the first primary backup appliance is greater than the (n)th time to complete for each of the other (N-1) primary backup appliances, then the method provides at least one consistent transactions set from the first primary backup appliance to a first secondary backup appliance with no delay.

    摘要翻译: 一种用于调整(N)个主备份设备之一的数据传输速率的方法。 该方法由第一个主备份设备形成至少一个一致的事务集。 第一个主要备份设备从其他(N-1)个主备份设备接收第(n)个状态信号和第(n + 1)个状态信号。 该方法计算(N)个主备份设备中的每个(N)个主备份设备的第(n)个有效带宽,(N)个主备份设备中的每一个完成的第(n)个时间,以及(N) 所有(N)主要电器。 如果第一个主备份设备完成的第(n)个时间大于其他(N-1)个主备份设备的第(n)个时间完成,则该方法提供至少一个一致的事务集 从第一个主备份设备到第一个辅助备份设备,不会延迟。

    Predictive algorithm for load balancing data transfers across components
    6.
    发明申请
    Predictive algorithm for load balancing data transfers across components 失效
    跨组件负载平衡数据传输的预测算法

    公开(公告)号:US20050193247A1

    公开(公告)日:2005-09-01

    申请号:US10788174

    申请日:2004-02-25

    IPC分类号: G06F11/00

    摘要: A system, method and computer program product are provided to improve the efficiency of the transmission of consistency groups across multiple storage components by ensuring that volume transactions are evenly allocated among backup components. Each volume is initially assigned to a specified backup component. Once a color period begins, volume transactions are transmitted to the assigned backup component. Each backup component accumulates data transfer information for its assigned volumes throughout at least a portion of the color period and calculates a new volume assignment for the next color period. Before the start of the next color period, a captain storage controller transmits any new assignments to the backup components. During a next color period, the process is repeated using the new assignments.

    摘要翻译: 提供了一种系统,方法和计算机程序产品,通过确保在备份组件之间均匀分配卷事务来提高跨多个存储组件的一致性组传输的效率。 每个卷最初分配给指定的备份组件。 一旦颜色周期开始,卷事务将被传输到分配的备份组件。 每个备份组件在颜色周期的至少一部分中累积其分配的卷的数据传输信息,并计算下一个颜色周期的新的卷分配。 在下一个色彩周期开始之前,船长存储控制器将任何新的作业传送到备份组件。 在下一个颜色期间,使用新的作业重复该过程。

    Shared data mirroring apparatus, method, and system
    8.
    发明申请
    Shared data mirroring apparatus, method, and system 失效
    共享数据镜像设备,方法和系统

    公开(公告)号:US20050177692A1

    公开(公告)日:2005-08-11

    申请号:US10772875

    申请日:2004-02-05

    IPC分类号: G06F12/16

    摘要: A network component useful in tracking write activity by writing logs containing write address information is described. The tracking component may be used in networked systems employing data mirrors to record data block addresses written to a primary storage volume during the time a data mirror is unavailable. The tracking component can be available to any network originating node, and may therefore track write activity on multiple volumes. At the time a data mirror is reconstructed, the log written may be used to construct a list of block addresses pointing to locations on a primary storage volume wherein data differs from a secondary storage volume member of the mirror. The locations maybe copied from the primary to secondary storage volume to reconstruct the data mirror. The performance impact of the tracking component is minimal and a shared network resource is offered that increases fault tolerance in the event of backup device failures.

    摘要翻译: 描述了通过写入包含写入地址信息的日志来跟踪写入活动的网络组件。 跟踪组件可以用于使用数据镜来记录数据镜不可用时写入主存储卷的数据块地址的网络系统。 跟踪组件可用于任何网络始发节点,并且因此可以跟踪多个卷上的写入活动。 在重建数据镜像时,所写入的日志可以用于构造指向主存储卷上的位置的块地址的列表,其中数据与镜像的辅助存储卷成员不同。 这些位置可能从主存储卷复制到副存储卷,以重构数据镜像。 跟踪组件的性能影响最小,并提供共享网络资源,从而在备份设备故障的情况下增加容错能力。

    Apparatus and method to select a captain from a plurality of control nodes
    9.
    发明申请
    Apparatus and method to select a captain from a plurality of control nodes 失效
    从多个控制节点选择船长的装置和方法

    公开(公告)号:US20050050197A1

    公开(公告)日:2005-03-03

    申请号:US10652144

    申请日:2003-08-29

    CPC分类号: G06F11/1456

    摘要: A method to select a captain control node from a plurality of interconnected control nodes is disclosed. The method provides by each of the plurality of control nodes a first signal to each of the other control nodes, and then receives by each of the plurality of control nodes, a response signal from each of the other control nodes. The method then calculates by each of the plurality of control nodes individual response times for each of the other control nodes, and determines by each control node its aggregate response time. The method then determines whether to select a captain control node using the aggregate response times. If the captain control node is selected using the aggregate response times, then the method then determines the minimum aggregate response time, and designates the control node having that minimum aggregate response time the captain control node.

    摘要翻译: 公开了一种从多个互连的控制节点中选择船长控制节点的方法。 该方法由多个控制节点中的每一个向每个其他控制节点提供第一信号,然后由多个控制节点中的每一个接收来自每个其他控制节点的响应信号。 该方法然后由多个控制节点中的每一个由每个其他控制节点的各个响应时间计算,并由每个控制节点确定其聚合响应时间。 该方法然后确定是否使用聚合响应时间来选择船长控制节点。 如果使用聚合响应时间选择队长控制节点,则该方法然后确定最小聚合响应时间,并且指定具有该队列控制节点具有该最小聚合响应时间的控制节点。

    Method and apparatus for storing and retrieving multiple point-in-time consistent data sets
    10.
    发明申请
    Method and apparatus for storing and retrieving multiple point-in-time consistent data sets 失效
    用于存储和检索多个时间一致数据集的方法和装置

    公开(公告)号:US20060041823A1

    公开(公告)日:2006-02-23

    申请号:US10910714

    申请日:2004-08-03

    IPC分类号: G11C29/00

    CPC分类号: G06F11/2064 G06F11/2071

    摘要: A method, apparatus, and article of manufacture containing instructions for processing multiple point-in-time consistent data sets. The method consists of creating multiple point-in-time data sets associated with a backup appliance which is associated with backup storage. Upon the transfer of a first update from a primary storage controller to the backup appliance, a determination is made whether the update affects data stored in the backup storage has been unchanged following the creation of the respective data sets. If the update does affect data which is unchanged following the creation of a data set, the current, non-updated data is read from the backup storage. A copy of the current, non-updated data thus read from the backup storage is stored in a storage location which can be one of the data sets or an independent memory location. In addition, pointers are associated with the remaining applicable data sets and directed to the copy at its storage location. Subsequently, the update is applied to the data on the backup storage device. In the event an update is subsequently transferred from the primary storage controller to the backup appliance which affects data stored in backup storage which has already been changed since the creation of an applicable data set, no further data is written to the applicable data set and the update is applied to the backup storage.

    摘要翻译: 一种包含用于处理多个时间一致数据集的指令的方法,装置和制品。 该方法包括创建与备份存储相关联的备份设备相关联的多个时间点数据集。 在将第一更新从主存储控制器传送到备份设备时,确定在创建相应数据集之后,存储在备份存储器中的更新影响是否保持不变。 如果更新确实影响创建数据集后不变的数据,则从备份存储器读取当前未更新的数据。 从备份存储器读取的当前未更新数据的副本被存储在可以是数据集之一或独立存储器位置的存储位置中。 此外,指针与剩余的适用数据集相关联,并指向其存储位置处的副本。 随后,更新应用于备份存储设备上的数据。 如果随后将更新从主存储控制器传送到备份设备,影响存储在备份存储器中的数据,这些数据自创建适用的数据集以来已经被更改,则不再向适用的数据集写入进一步的数据, 更新应用于备份存储。