公开(公告)号：US07490103B2

公开(公告)日：2009-02-10

申请号：US11051793

申请日：2005-02-04

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

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

IPC分类号： G06F17/00

CPC分类号： G06F11/1469 ,  G06F11/1466 ,  G06F2201/82 ,  G06F2201/84 ,  Y10S707/99942 ,  Y10S707/99943 ,  Y10S707/99944 ,  Y10S707/99945

摘要： A method and system for generating a snapshot in a consistent state is disclosed. The system comprises a host computer, a primary data storage, a data protection unit, and a secondary data storage. The data protection unit monitors a state of an application which is running on the host computer. The data protection unit generates a snapshot of data stored in a primary data storage when the application is in a consistent state, and stores the snapshot on a secondary storage. In the event of a system failure, the data is recovered using the last snapshot.

摘要翻译： 公开了一种用于以一致状态生成快照的方法和系统。 该系统包括主计算机，主数据存储器，数据保护单元和辅助数据存储器。 数据保护单元监视在主计算机上运行的应用程序的状态。 当应用处于一致状态时，数据保护单元生成存储在主数据存储器中的数据的快照，并将快照存储在辅助存储器上。 在系统故障的情况下，使用最后一个快照恢复数据。

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。

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。

公开(公告)号：US07315965B2

公开(公告)日：2008-01-01

申请号：US10771613

申请日：2004-02-04

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： G06F11/00

CPC分类号： G06F11/1471 ,  G06F11/2074

摘要： A method and system wherein data is structured so that writes may be continuously duplicated and a protected volume may be restored to a particular point in time as desired. Writes are continuously duplicated on a secondary volume and organized into delta maps. The delta maps indicate which memory blocks were written to during a particular time frame.

摘要翻译： 一种方法和系统，其中数据被构造成使得写入可以被连续复制，并且受保护的卷可以根据需要恢复到特定的时间点。 写入在次要卷上不断重复，并组织成三角洲地图。 三角形映射指示在特定时间帧内写入哪些存储器块。

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。

公开(公告)号：US07325159B2

公开(公告)日：2008-01-29

申请号：US10772017

申请日：2004-02-04

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： G06F11/00

CPC分类号： G06F11/1435 ,  G06F11/1446 ,  G06F11/1469 ,  G06F11/2071 ,  G06F2201/84 ,  G06F2201/855

摘要： In a continuous data protection system having a primary volume and a secondary volume, a method for data recovery begins by selecting a snapshot of the primary volume to be recovered and a location on which the snapshot is to be loaded. A point in time (PIT) map is created for the selected snapshot, and the selected snapshot is loaded at the selected location. A data block from the PIT map is resolved to determine which block on the secondary volume is presented as being part of the snapshot. The snapshot is accessed via a host computer as if the snapshot was the primary volume at an earlier point in time, corresponding to the time of the selected snapshot.

摘要翻译： 在具有主卷和次卷的连续数据保护系统中，通过选择要恢复的主卷的快照和要在其上加载快照的位置，开始数据恢复的方法。 为所选快照创建时间点（PIT）映射，并将所选快照加载到所选位置。 来自PIT映射的数据块被解析，以确定辅助卷上的哪个块被呈现为快照的一部分。 快照可以通过主机访问，就好像快照是较早时间点的主卷，与所选快照的时间相对应。

公开(公告)号：US07069466B2

公开(公告)日：2006-06-27

申请号：US10218249

申请日：2002-08-14

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

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

IPC分类号： G06F11/00

CPC分类号： G06F11/1458

摘要： A method and system for copying backup data is disclosed. Backup data may be copied to a first virtual tape library in the same format as it would be copied to a physical tape library. The backup data may also be electronically copied to a second virtual tape library or to a physical tape library.

摘要翻译： 公开了一种用于复制备份数据的方法和系统。 备份数据可能会以与将被复制到物理磁带库相同的格式复制到第一个虚拟磁带库。 备份数据也可以被电子地复制到第二虚拟磁带库或物理磁带库。

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。

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。

公开(公告)号：US07904679B2

公开(公告)日：2011-03-08

申请号：US11051794

申请日：2005-02-04

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

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

IPC分类号： G06F12/00

CPC分类号： G06F11/1448 ,  G06F11/1461

摘要： A method and apparatus for managing backup data is disclosed. A data backup system defines a plurality of time windows for creating and maintaining backup data in accordance with a data backup policy. Each of the time windows is assigned a predetermined amount of storage space. When the data backup system creates backup data, the system determines whether a storage space assigned to a time window is large enough to accommodate new backup data. If the storage space is large enough, the new backup data is stored. However, if the storage space is not large enough, the system deletes the oldest backup data until enough storage space is obtained.

摘要翻译： 公开了一种用于管理备份数据的方法和装置。 数据备份系统根据数据备份策略定义多个用于创建和维护备份数据的时间窗口。 每个时间窗口被分配预定量的存储空间。 当数据备份系统创建备份数据时，系统确定分配给时间窗口的存储空间是否足够大以容纳新的备份数据。 如果存储空间足够大，则存储新的备份数据。 但是，如果存储空间不够大，系统将删除最旧的备份数据，直到获得足够的存储空间。