公开(公告)号：US07143117B2

公开(公告)日：2006-11-28

申请号：US10671295

申请日：2003-09-25

申请人： John Jay Wolfgang ,  Kenneth Wayne Boyd ,  Kenneth Fairclough Day, III ,  Philip Matthew Doatmas ,  Kirby Grant Dahman

发明人： John Jay Wolfgang ,  Kenneth Wayne Boyd ,  Kenneth Fairclough Day, III ,  Philip Matthew Doatmas ,  Kirby Grant Dahman

IPC分类号： G06F17/30 ,  G06F7/00 ,  G06F16/16

CPC分类号： G06F11/1451 ,  G06F11/2082 ,  Y10S707/99936

摘要： Disclosed is a technique for data synchronization. A first identifier is determined for a portion of data at a first source. A second identifier is determined for a portion of corresponding data at a second source. The first and second identifiers are compared. When the first and second identifiers do not match, the portion of corresponding data at the second source is replaced with the portion of data at the first source.

摘要翻译： 公开了一种用于数据同步的技术。 对于第一来源的数据的一部分确定第一标识符。 在第二个源处对于相应数据的一部分确定第二标识符。 比较第一和第二标识符。 当第一和第二标识符不匹配时，在第二个源处的对应数据的部分被替换为第一个源的数据部分。

公开(公告)号：US07647462B2

公开(公告)日：2010-01-12

申请号：US11548220

申请日：2006-10-10

申请人： John Jay Wolfgang ,  Kenneth Wayne Boyd ,  Kenneth Fairclough Day, III ,  Philip Matthew Doatmas ,  Kirby Grant Dahman

发明人： John Jay Wolfgang ,  Kenneth Wayne Boyd ,  Kenneth Fairclough Day, III ,  Philip Matthew Doatmas ,  Kirby Grant Dahman

IPC分类号： G06F17/30 ,  G06F7/00 ,  G06F16/16 ,  G06F12/00

CPC分类号： G06F11/1451 ,  G06F11/2082 ,  Y10S707/99936

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。

公开(公告)号：US07412577B2

公开(公告)日：2008-08-12

申请号：US10772875

申请日：2004-02-05

申请人： Kenneth Wayne Boyd ,  Kenneth Fairclough Day, III ,  Philip Matthew Doatmas ,  John Jay Wolfgang

发明人： Kenneth Wayne Boyd ,  Kenneth Fairclough Day, III ,  Philip Matthew Doatmas ,  John Jay Wolfgang

IPC分类号： G06F12/04

CPC分类号： G06F11/2064 ,  G06F11/2071 ,  G06F11/2082 ,  G06F2201/855

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。

公开(公告)号：US20080307179A1

公开(公告)日：2008-12-11

申请号：US12188916

申请日：2008-08-08

申请人： Kenneth Wayne Boyd ,  Kenneth Fairclough Day, III ,  Philip Matthew Doatmas ,  John Jay Wolfgang

发明人： Kenneth Wayne Boyd ,  Kenneth Fairclough Day, III ,  Philip Matthew Doatmas ,  John Jay Wolfgang

IPC分类号： G06F12/04 ,  G06F12/16

CPC分类号： G06F11/2064 ,  G06F11/2071 ,  G06F11/2082 ,  G06F2201/855

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 may be 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。 这些位置可以从主存储卷复制到次存储卷，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。

公开(公告)号：US07206911B2

公开(公告)日：2007-04-17

申请号：US10786845

申请日：2004-02-25

申请人： John Jay Wolfgang ,  Philip Matthew Doatmas ,  Kenneth Fairclough Day, III ,  Kenneth Wayne Boyd

发明人： John Jay Wolfgang ,  Philip Matthew Doatmas ,  Kenneth Fairclough Day, III ,  Kenneth Wayne Boyd

IPC分类号： G06F12/16

CPC分类号： G06F11/2069 ,  G06F11/2071 ,  Y10S707/99953 ,  Y10S707/99955

摘要： Disclosed is a technique for transferring data using multiple backup components. Responsibility for a portion of data is assigned to a first backup component. When a data update for the portion of data is received at the first backup component from a primary source, the data update is mirrored to a second backup component that is not assigned responsibility for the portion of data.Also disclosed is a technique for processing data updates with a group of backup components. It is determined that a new backup component is active. Near an end of a consistent transactions set formation period, responsibility for one or more portions of data are assigned to each backup component in the group and to the new backup component. During a next consistent transactions set formation period, data updates are processed with each backup component in the group and the new backup component.Moreover, disclosed is a technique for processing data updates with a group of backup components. It is determined that a first backup component in the group is no longer available. Portions of data for which the first backup component had been assigned responsibility are reassigned to each of the other backup components in the group.

摘要翻译： 公开了一种使用多个备份组件传送数据的技术。 将一部分数据的责任分配给第一备份组件。 当从主源在第一备份组件处接收到数据部分的数据更新时，将数据更新镜像到不分配负责该部分数据的第二备份组件。

公开(公告)号：US07882316B2

公开(公告)日：2011-02-01

申请号：US12188916

申请日：2008-08-08

申请人： Kenneth Wayne Boyd ,  Kenneth Fairclough Day, III ,  Philip Matthew Doatmas ,  John Jay Wolfgang

发明人： Kenneth Wayne Boyd ,  Kenneth Fairclough Day, III ,  Philip Matthew Doatmas ,  John Jay Wolfgang

IPC分类号： G06F12/04 ,  G06F12/16

CPC分类号： G06F11/2064 ,  G06F11/2071 ,  G06F11/2082 ,  G06F2201/855

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 may be 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。 这些位置可以从主存储卷复制到次存储卷，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。

公开(公告)号：US07277991B2

公开(公告)日：2007-10-02

申请号：US10822410

申请日：2004-04-12

申请人： Kenneth Fairclough Day, III ,  John Jay Wolfgang ,  Kenneth Wayne Boyd ,  Philip Matthew Doatmas

发明人： Kenneth Fairclough Day, III ,  John Jay Wolfgang ,  Kenneth Wayne Boyd ,  Philip Matthew Doatmas

IPC分类号： G06F12/00

CPC分类号： G06F12/0862 ,  G06F12/0866 ,  G06F2212/6028

摘要： Provided are a method, system and program for prefetching data into cache. A prefetch command is processed that indicates at least one conditional statement and at least one block to prefetch from storage to cache in response to determining that the conditional statement is satisfied.

摘要翻译： 提供了一种用于将数据预取到高速缓存中的方法，系统和程序。 处理预取命令，其响应于确定满足条件语句，指示至少一个条件语句和至少一个块来从存储器预缓存。

公开(公告)号：US08572331B2

公开(公告)日：2013-10-29

申请号：US12261972

申请日：2008-10-30

申请人： Henry Esmond Butterworth ,  Kenneth Fairclough Day, III ,  Philip Matthew Doatmas ,  John Jay Wolfgang ,  Vitaly Zautner ,  Aviad Zlotnick

发明人： Henry Esmond Butterworth ,  Kenneth Fairclough Day, III ,  Philip Matthew Doatmas ,  John Jay Wolfgang ,  Vitaly Zautner ,  Aviad Zlotnick

IPC分类号： G06F12/00 ,  G06F13/00 ,  G06F13/28 ,  G06F7/00 ,  G06F17/00 ,  G06F11/00 ,  G06F11/16

CPC分类号： G06F11/08 ,  Y10S707/99952 ,  Y10S707/99953

摘要： A method is disclosed for reliably updating a data group in a read-before-write data replication environment. The method reliably updates the data group by receiving an updated data group sent from a first storage medium to a second storage medium, comparing the updated data group with a previous data group previously existing on the second storage medium and writing the updated data group to the second storage medium. The read-before-write and differencing method disclosed maintain reliability by storing multiple copies of changes made to the second storage medium during and after the write process.

摘要翻译： 公开了一种用于可靠地更新写入前读数据复制环境中的数据组的方法。 该方法通过接收从第一存储介质发送到第二存储介质的更新数据组来可靠地更新数据组，将更新的数据组与先前存在于第二存储介质上的先前数据组进行比较，并将更新的数据组写入 第二存储介质。 所公开的预写入和差分方法通过在写入过程中和之后存储对第二存储介质所做的更改的多个副本来保持可靠性。

公开(公告)号：US07484051B2

公开(公告)日：2009-01-27

申请号：US11093392

申请日：2005-03-30

申请人： Henry Esmond Butterworth ,  Kenneth Fairclough Day, III ,  Philip Matthew Doatmas ,  John Jay Wolfgang ,  Vitaly Zautner ,  Aviad Zlotnick

发明人： Henry Esmond Butterworth ,  Kenneth Fairclough Day, III ,  Philip Matthew Doatmas ,  John Jay Wolfgang ,  Vitaly Zautner ,  Aviad Zlotnick

IPC分类号： G06F12/00 ,  G06F13/00 ,  G06F13/28 ,  G06F17/30 ,  G06F15/167 ,  G06F15/16

CPC分类号： G06F11/08 ,  Y10S707/99952 ,  Y10S707/99953

摘要： An apparatus, system, and method are disclosed for reliably updating a data group in a data replication environment. The apparatus, system, and method reliably update the data group by receiving an updated data group sent from a first storage medium to a second storage medium, comparing the updated data group with a previous data group previously existing on the second storage medium and writing the updated data group to the second storage medium. The read-before-write and differencing method disclosed maintain reliability by storing multiple copies of changes made to the second storage medium during and after the write process.

摘要翻译： 公开了用于可靠地更新数据复制环境中的数据组的装置，系统和方法。 装置，系统和方法通过接收从第一存储介质发送到第二存储介质的更新数据组来可靠地更新数据组，将更新的数据组与先前存在于第二存储介质上的先前数据组进行比较， 更新数据组到第二存储介质。 所公开的预写入和差分方法通过在写入过程中和之后存储对第二存储介质所做的更改的多个副本来保持可靠性。

公开(公告)号：US20090043826A1

公开(公告)日：2009-02-12

申请号：US12261972

申请日：2008-10-30

申请人： Henry Esmond Butterworth ,  Kenneth Fairclough Day, III ,  Philip Matthew Doatmas ,  John Jay Wolfgang ,  Vitaly Zautner ,  Aviad Zlotnick

发明人： Henry Esmond Butterworth ,  Kenneth Fairclough Day, III ,  Philip Matthew Doatmas ,  John Jay Wolfgang ,  Vitaly Zautner ,  Aviad Zlotnick

IPC分类号： G06F12/16 ,  G06F17/30 ,  G06F12/00 ,  G06F11/00

CPC分类号： G06F11/08 ,  Y10S707/99952 ,  Y10S707/99953

摘要： A method is disclosed for reliably updating a data group in a read-before-write data replication environment. The method reliably updates the data group by receiving an updated data group sent from a first storage medium to a second storage medium, comparing the updated data group with a previous data group previously existing on the second storage medium and writing the updated data group to the second storage medium. The read-before-write and differencing method disclosed maintain reliability by storing multiple copies of changes made to the second storage medium during and after the write process.

摘要翻译： 公开了一种用于可靠地更新写入前读数据复制环境中的数据组的方法。 该方法通过接收从第一存储介质发送到第二存储介质的更新数据组来可靠地更新数据组，将更新的数据组与先前存在于第二存储介质上的先前数据组进行比较，并将更新的数据组写入 第二存储介质。 所公开的预写入和差分方法通过在写入过程中和之后存储对第二存储介质所做的更改的多个副本来保持可靠性。