Method, system and article of manufacture for metadata replication and restoration
    1.
    发明申请
    Method, system and article of manufacture for metadata replication and restoration 有权
    元数据复制和恢复的方法,系统和制造

    公开(公告)号:US20060179082A1

    公开(公告)日:2006-08-10

    申请号:US11054976

    申请日:2005-02-09

    IPC分类号: G06F17/30

    摘要: Provided are a method, system, and article of manufacture, wherein data and metadata are generated in a computational device, wherein the generated data is stored in a first physical storage device coupled to the computational device, and wherein the generated metadata is stored transiently in the computational device. The data and the metadata are replicated to a second physical storage device. The replicated data and the replicated metadata in the second physical storage device are used to recover from a failure of at least one of the computational device and the first physical storage device.

    摘要翻译: 提供了一种方法,系统和制品,其中在计算设备中生成数据和元数据,其中所生成的数据被存储在耦合到计算设备的第一物理存储设备中,并且其中生成的元数据被暂时存储在 计算设备。 数据和元数据被复制到第二物理存储设备。 第二物理存储设备中的复制数据和复制的元数据用于从计算设备和第一物理存储设备中的至少一个的故障中恢复。

    REDIRECTION OF STORAGE ACCESS REQUESTS
    2.
    发明申请
    REDIRECTION OF STORAGE ACCESS REQUESTS 失效
    存储访问请求的重定向

    公开(公告)号:US20080071999A1

    公开(公告)日:2008-03-20

    申请号:US11945098

    申请日:2007-11-26

    IPC分类号: G06F12/00

    CPC分类号: G06F11/2069 G06F11/2076

    摘要: Provided are a method, system, and article of manufacture, wherein a controller receives a request from one of a plurality of hosts. The controller determines whether a primary storage control unit coupled to the controller is operational. A response is generated by accessing the primary storage control unit, in response to determining that the primary storage control unit is operational. The response is generated by accessing a secondary storage control unit, in response to determining that the primary storage control unit is not operational, wherein data is replicated synchronously from the primary storage control unit to the secondary storage control unit.

    摘要翻译: 提供了一种方法,系统和制品,其中控制器从多个主机之一接收请求。 控制器确定耦合到控制器的主存储控制单元是否可操作。 响应于确定主存储控制单元是可操作的,通过访问主存储控制单元来产生响应。 响应于响应于确定主存储控制单元不可操作而访问辅助存储控制单元而产生响应,其中数据从主存储控制单元同步地复制到辅助存储控制单元。

    Predictive algorithm for load balancing data transfers across components
    3.
    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
    5.
    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
    6.
    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。

    Apparatus, system, and method for switching a volume address association in a point-in-time copy relationship
    7.
    发明申请
    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:US20070220312A1

    公开(公告)日:2007-09-20

    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。

    Establishing copy relationships to copy source data to target data
    8.
    发明申请
    Establishing copy relationships to copy source data to target data 失效
    建立复制关系,将源数据复制到目标数据

    公开(公告)号:US20070130222A1

    公开(公告)日:2007-06-07

    申请号:US11293608

    申请日:2005-12-01

    IPC分类号: G06F17/30

    摘要: Provided are a method, system, and program for establishing copy relationships to copy source data to target data. A request is received to establish a copy relationship indicating to copy source data to target data. A determination is made as to whether the source data defined in the request comprises target data defined in a preexisting copy relationship. A determination is made as to whether base source data copied to the target data in the preexisting copy relationship also comprises the source data indicated in the request in response to determining that the source data defined in the request comprises target data in the preexisting copy relationship. A new copy relationship is defined to copy the determined base source data to the target data indicated in the request.

    摘要翻译: 提供了一种用于建立复制关系以将源数据复制到目标数据的方法,系统和程序。 接收请求以建立指示将源数据复制到目标数据的复制关系。 确定在请求中定义的源数据是否包含以预先存在的复制关系定义的目标数据。 确定复制到预先存在的复制关系中的目标数据的基本源数据是否还包括在请求中指示的源数据,以响应于确定在请求中定义的源数据包括预先存在的复制关系中的目标数据。 定义了新的复制关系,将确定的基本源数据复制到请求中指示的目标数据。

    METHOD, SYSTEM, AND PROGRAM FOR DATA SYNCHRONIZATION
    9.
    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
    10.
    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。