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    Fault monitor for restarting failed instances of the fault monitor
    1.
    发明授权
    Fault monitor for restarting failed instances of the fault monitor 失效
    故障监视器用于重新启动故障监视器的故障实例

    公开(公告)号：US06718486B1

    公开(公告)日：2004-04-06

    申请号：US09624747

    申请日：2000-07-24

    申请人： Drew Shaffer Roselli ,  Rico Blaser ,  Mikel Carl Lechner

    发明人： Drew Shaffer Roselli ,  Rico Blaser ,  Mikel Carl Lechner

    IPC分类号： G06F1100

    CPC分类号： G06F11/1438

    摘要： A computer system having a fault-tolerance framework in an extendable computer architecture. The computer system is formed of clusters of nodes where each node includes computer hardware and operating system software for executing jobs that implement the services provided by the computer system. Jobs are distributed across the nodes under control of a hierarchical resource management unit. The resource management unit includes hierarchical monitors that monitor and control the allocation of resources. In the resource management unit, a first monitor, at a first level, monitors and allocates elements below the first level. A second monitor, at a second level, monitors and allocates elements at the first level. The framework is extendable from the hierarchy of the first and second levels to higher levels where monitors at higher levels each monitor lower level elements in a hierarchical tree. If a failure occurs down the hierarchy, a higher level monitor restarts an element at a lower level. If a failure occurs up the hierarchy, a lower level monitor restarts an element at a higher level. Each of the monitors includes termination code that causes an element to terminate if duplicate elements have been restarted for the same job. The termination code in one embodiment includes suicide code whereby an element will self-destruct when the element detects that it is an unnecessary duplicate element.

    摘要翻译： 具有可扩展计算机体系结构中的容错框架的计算机系统。 计算机系统由节点簇组成，其中每个节点包括用于执行由计算机系统提供的服务的作业的计算机硬件和操作系统软件。 作业在分层资源管理单元的控制下分布在节点上。 资源管理单元包括监视和控制资源分配的分层监视器。 在资源管理单元中，第一级监视器监视和分配低于第一级的元素。 第二级监视器在第二级监视和分配第一级的元素。 该框架可以从第一级和第二级的层级扩展到更高级别，其中较高级别的监视器每个监视分层树中的较低级别的元素。 如果层次结构发生故障，则较高级别的监视器将重新启动较低级别的元素。 如果层次结构发生故障，较低级别的监视器将重新启动更高级别的元素。 每个监视器包括终止代码，导致元素终止，如果重复的元素已重新启动相同的作业。 一个实施例中的终止代码包括自杀代码，当元素检测到它是不必要的重复元素时，元素将自毁。

    System and method for virtual vaulting
    3.
    发明授权
    System and method for virtual vaulting 有权
    用于虚拟存储的系统和方法

    公开(公告)号：US07487009B2

    公开(公告)日：2009-02-03

    申请号：US11294955

    申请日：2005-12-06

    申请人： Don Alvin Trimmer ,  Roger Stager ,  Craig Anthony Johnston ,  Rico Blaser

    发明人： Don Alvin Trimmer ,  Roger Stager ,  Craig Anthony Johnston ,  Rico Blaser

    IPC分类号： G06F7/00

    CPC分类号： G06F3/0632 ,  G06F3/0605 ,  G06F3/0686 ,  G11B15/68

    摘要： The present invention is a tape library comprising both a small front-end portion and a larger back-end portion. The front-end portion is a visible virtual or physical tape library; and the back-end portion is a large invisible virtual or physical tape vault. The DPA is a typical DPA which only sees the front-end library. If desired, all messages regarding the importing and exporting of tapes are reviewed by an agent. The agent manages the automatic transfer of tapes between the front-end and the back-end, and notifies the user when a manual import or export is needed. This greatly reduces both the amount of hardware required to establish a virtual or physical tape library and also reduces the amount of labor required by a user to physically import and export tapes. If both the front-end library and the back-end vault are virtual and reside on the same virtual tape library appliance, no data movement is necessary and the tapes can be moved merely by performing small software state changes. In this case, manual operation may be acceptable.

    摘要翻译： 本发明是包括小前端部分和较大后端部分的磁带库。 前端部分是可见的虚拟或物理磁带库; 并且后端部分是大的不可见虚拟或物理磁带库。 DPA是一个典型的DPA，只能看到前端库。 如果需要，有关导入和导出磁带的所有消息都由代理审查。 代理管理磁带在前端和后端之间的自动传输，并在需要手动导入或导出时通知用户。 这大大减少了建立虚拟或物理磁带库所需的硬件数量，并且还减少了用户实际导入和导出磁带所需的人力。 如果前端库和后端保管库都是虚拟的，并且驻留在同一个虚拟磁带库设备上，则不需要数据移动，只能通过执行小型软件状态更改来移动磁带。 在这种情况下，手动操作是可以接受的。

    Method and system for synchronizing volumes in a continuous data protection system
    4.
    发明授权
    Method and system for synchronizing volumes in a continuous data protection system 有权
    用于在连续数据保护系统中同步卷的方法和系统

    公开(公告)号：US07426617B2

    公开(公告)日：2008-09-16

    申请号：US10772642

    申请日：2004-02-05

    申请人： Roger Keith Stager ,  Donald Alvin Trimmer ,  Pawan Saxena ,  Randall Johnson ,  Craig Anthony Johnston ,  Yafen Peggy Chang ,  Rico Blaser

    发明人： Roger Keith Stager ,  Donald Alvin Trimmer ,  Pawan Saxena ,  Randall Johnson ,  Craig Anthony Johnston ,  Yafen Peggy Chang ,  Rico Blaser

    IPC分类号： G06F12/00

    CPC分类号： G06F11/2082 ,  G06F11/2074 ,  G06F2201/855

    摘要： A method for synchronizing a secondary volume with a primary volume in a continuous data protection system begins by scanning a region of the primary volume, which is then compared with a corresponding region of the secondary volume. An identification of the scanned region is stored in a compare delta map when the comparison results in a discrepancy between the scanned region and the corresponding region. Data is copied from the primary volume to the secondary volume, using the compare delta map as a guide to locate the data to copy. If the data protection system has failed just prior to the restore process being initiated, it is termed a re-baseline, and the entire primary volume is scanned. If the data protection system is active prior to the restore process being initiated, it is termed a re-synchronization, and is optimized by scanning only select regions of the primary volume.

    摘要翻译： 在连续数据保护系统中同步辅助卷与主卷的方法通过扫描主卷的区域开始，然后将其与辅助卷的相应区域进行比较。 当比较导致扫描区域和对应区域之间的差异时，扫描区域的识别被存储在比较增量图中。 将数据从主卷复制到辅助卷，使用比较增量映射作为指导来定位要复制的数据。 如果在恢复过程正在启动之前数据保护系统发生故障，则称为重新基准，并扫描整个主卷。 如果数据保护系统在恢复过程启动之前处于活动状态，则称为重新同步，并且仅通过扫描主卷的选择区域进行优化。

    METHOD AND SYSTEM FOR RESTORING A VOLUME IN A CONTINUOUS DATA PROTECTION SYSTEM
    6.
    发明申请
    METHOD AND SYSTEM FOR RESTORING A VOLUME IN A CONTINUOUS DATA PROTECTION SYSTEM 有权
    在连续数据保护系统中恢复一个体积的方法和系统

    公开(公告)号：US20080147756A1

    公开(公告)日：2008-06-19

    申请号：US12040276

    申请日：2008-02-29

    申请人： Roger Keith Stager ,  Donald Alvin Trimmer ,  Pawan Saxena ,  Randall Johnson ,  Craig Anthony Johnston ,  Yafen Peggy Chang ,  Rico Blaser

    发明人： Roger Keith Stager ,  Donald Alvin Trimmer ,  Pawan Saxena ,  Randall Johnson ,  Craig Anthony Johnston ,  Yafen Peggy Chang ,  Rico Blaser

    IPC分类号： G06F12/00

    CPC分类号： G06F11/2082 ,  G06F11/2074 ,  G06F2201/855

    摘要： A system for synchronizing a secondary volume with a primary volume in a continuous data protection system includes scanning means for scanning a region of the primary volume; comparing means for comparing the scanned region with a corresponding region of the secondary volume; storing means for storing an identification of the scanned region in a compare delta map when the comparing means returns a discrepancy between the scanned region and the corresponding region; copying means for copying data from the primary volume to the secondary volume, using the compare delta map as a guide to locate the data to copy; and revising means for revising the compare delta map by removing any changes made to the primary volume during a scan interval, which is a period of time required to scan the primary volume.

    摘要翻译： 用于在连续数据保护系统中同步辅助卷与主卷的系统包括用于扫描主卷的区域的扫描装置; 比较装置，用于将扫描区域与次体积的对应区域进行比较; 存储装置，用于当比较装置返回扫描区域和对应区域之间的差异时，将扫描区域的标识存储在比较增量图中; 用于将数据从主卷复制到副卷的复制装置，使用比较增量图作为定位要复制的数据的指南; 以及用于通过在扫描间隔期间删除对主卷所做的任何改变（这是扫描主卷所需的时间）来修改比较增量映射的修改装置。

    System and method for virtual vaulting
    9.
    发明授权
    System and method for virtual vaulting 有权
    用于虚拟存储的系统和方法

    公开(公告)号：US06973369B2

    公开(公告)日：2005-12-06

    申请号：US10387319

    申请日：2003-03-12

    申请人： Don Alvin Trimmer ,  Roger Stager ,  Craig Anthony Johnston ,  Rico Blaser

    发明人： Don Alvin Trimmer ,  Roger Stager ,  Craig Anthony Johnston ,  Rico Blaser

    IPC分类号： G06F3/06 ,  G06F7/00 ,  G06F12/00 ,  G11B15/68

    CPC分类号： G06F3/0632 ,  G06F3/0605 ,  G06F3/0686 ,  G11B15/68

    摘要： The present invention is a tape library comprising both a small front-end portion and a larger back-end portion. The front-end portion is a visible virtual or physical tape library; and the back-end portion is a large invisible virtual or physical tape vault. The DPA is a typical DPA which only sees the front-end library. If desired, all messages regarding the importing and exporting of tapes are reviewed by an agent. The agent manages the automatic transfer of tapes between the front-end and the back-end, and notifies the user when a manual import or export is needed. This greatly reduces both the amount of hardware required to establish a virtual or physical tape library and also reduces the amount of labor required by a user to physically import and export tapes. If both the front-end library and, the back-end vault are virtual and reside on the same virtual tape library appliance, no data movement is necessary and the tapes can be moved merely by performing small software state changes. In this case, manual operation may be acceptable.

    摘要翻译： 本发明是包括小前端部分和较大后端部分的磁带库。 前端部分是可见的虚拟或物理磁带库; 并且后端部分是大的不可见虚拟或物理磁带库。 DPA是一个典型的DPA，只能看到前端库。 如果需要，有关导入和导出磁带的所有消息都由代理审查。 代理管理磁带在前端和后端之间的自动传输，并在需要手动导入或导出时通知用户。 这大大减少了建立虚拟或物理磁带库所需的硬件数量，并且还减少了用户实际导入和导出磁带所需的人力。 如果前端库和后端保管库都是虚拟的，并且驻留在同一虚拟磁带库设备上，则不需要数据移动，只能通过执行小型软件状态更改来移动磁带。 在这种情况下，手动操作是可以接受的。