Predictive algorithm for load balancing data transfers across components
    3.
    发明授权
    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:US07475099B2

    公开(公告)日:2009-01-06

    申请号:US10788174

    申请日:2004-02-25

    IPC分类号: G06F17/00

    摘要: A method is 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的传输效率的方法。 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。

    Apparatus and method to adjust data transfer rate
    6.
    发明授权
    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:US07321960B2

    公开(公告)日:2008-01-22

    申请号:US11531249

    申请日:2006-09-12

    IPC分类号: G06F12/16

    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。

    Transferring data from a primary data replication appliance in a primary data facility to a secondary data replication appliance in a secondary data facility
    7.
    发明授权
    Transferring data from a primary data replication appliance in a primary data facility to a secondary data replication appliance in a secondary data facility 失效
    将数据从主数据工具中的主数据复制设备传输到辅助数据设备中的辅助数据复制设备

    公开(公告)号:US08380686B2

    公开(公告)日:2013-02-19

    申请号:US11080871

    申请日:2005-03-14

    IPC分类号: G06F17/30

    CPC分类号: G06F11/2066 G06F11/2071

    摘要: Methods and apparatus are provided for copying data from a primary storage facility to a secondary storage facility which reduce the workload on the storage controller in the primary facility and minimize bandwidth usage. The primary storage facility includes a primary data replication appliance which transfers data to a secondary replication appliance. Updated data from a host is both stored through a storage controller in the primary facility and also received by the primary replication appliance. Logic in the primary replication appliance determines whether the immediately previous version of the data is in a buffer from a previous storage operation. If so, the current (updated) version of the data is compared with the previous version and the difference, such as calculated through a bit-wise exclusive-OR operation, is transferred to the secondary replication appliance. The process is reversed in the secondary replication appliance and the recreated updated version of the data stored in the secondary facility.

    摘要翻译: 提供了用于将数据从主存储设施复制到辅助存储设备的方法和装置,其减少了主设备中的存储控制器上的工作量并且最小化带宽使用。 主存储设备包括将数据传输到辅助复制设备的主数据复制设备。 来自主机的更新数据都通过主设备中的存储控制器存储,并由主复制设备接收。 主复制设备中的逻辑可确定数据的紧接先前版本是否在先前存储操作的缓冲区中。 如果是,将当前(更新)版本的数据与以前的版本进行比较,并且通过逐位异或运算计算的差异被传送到辅助复制设备。 次要复制设备中的过程与第二个设备中存储的数据的重新创建的更新版本相反。

    Asynchronous replication of data
    8.
    发明授权
    Asynchronous replication of data 失效
    异步复制数据

    公开(公告)号:US07519633B2

    公开(公告)日:2009-04-14

    申请号:US11222900

    申请日:2005-09-08

    IPC分类号: G06F17/30

    摘要: In a data processing environment, data is replicated to a remote or secondary storage device in a manner which reduces the adverse performance effects and inefficient bandwidth usage imposed by the conventional one-transaction-at-a-time process. Transactions to be transferred are grouped by a replication manager by selecting transactions having start times earlier than the completion time of a first transaction. Thus, no transaction in a group will be dependent upon any other transaction in the group. Once selected, all transactions in the group may then be transferred to the secondary storage device.

    摘要翻译: 在数据处理环境中,数据被复制到远程或辅助存储设备,以减少不利的性能影响和传统的一次交易在一个时间过程中施加的低效带宽使用。 要传送的事务由复制管理器分组,通过选择具有早于第一个事务的完成时间的开始时间的事务。 因此,组中的任何交易都不依赖于组中的任何其他交易。 一旦选择,组中的所有事务可以被传送到辅助存储设备。

    Apparatus and method to adjust data transfer rate
    9.
    发明授权
    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:US07107420B2

    公开(公告)日:2006-09-12

    申请号:US10652021

    申请日:2003-08-29

    IPC分类号: G06F12/16

    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, system, and method for switching a volume address association in a point-in-time copy relationship
    10.
    发明授权
    Apparatus, system, and method for switching a volume address association in a point-in-time copy relationship 失效
    用于在时间点复制关系中切换卷地址关联的装置,系统和方法

    公开(公告)号:US07823007B2

    公开(公告)日:2010-10-26

    申请号:US11357375

    申请日:2006-02-17

    IPC分类号: G06F11/00

    CPC分类号: G06F11/2094 G06F11/2097

    摘要: An apparatus, system, and method are disclosed for switching a volume address association in a point-in-time copy relationship. A copy module creates a point-in-time copy structure of a source volume at a target volume. A migration module copies data from the source volume to the target volume. A detection module detects data corruption in the source volume. A switch module switches a logical volume address from a source volume address of the source volume to a target volume address of the target volume in response to detecting the data corruption, redirecting data reads and writes to the target volume. In one embodiment, a tracking module tracks a current target volume copy of source volume data and redirects an access for source volume data without the current target volume copy to the source volume.

    摘要翻译: 公开了一种用于在时间点复制关系中切换卷地址关联的装置,系统和方法。 复制模块在目标卷创建源卷的时间点复制结构。 迁移模块将数据从源卷复制到目标卷。 检测模块检测源卷中的数据损坏。 响应于检测到数据损坏,将数据读取和写入重定向到目标卷,交换机模块将逻辑卷地址从源卷的源卷地址切换到目标卷的目标卷地址。 在一个实施例中,跟踪模块跟踪源卷数据的当前目标卷副本,并将源卷数据的访问重定向,而不将当前目标卷拷贝重定向到源卷。