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1. 发明授权

US07191299B1 Method and system of providing periodic replication 有权
标题翻译：提供周期性复制的方法和系统
公开(公告)号：US07191299B1
公开(公告)日：2007-03-13
申请号：US10436354
申请日：2003-05-12
申请人： Anand K. Kekre , Ronald S. Karr , John A. Colgrove , Kedar M. Karmarkar , Raghu Krishnamurthy , Saurabh R. Godbole , Ming Xu , Vikas K. Gupta , Deepak Tawri
发明人： Anand K. Kekre , Ronald S. Karr , John A. Colgrove , Kedar M. Karmarkar , Raghu Krishnamurthy , Saurabh R. Godbole , Ming Xu , Vikas K. Gupta , Deepak Tawri
IPC分类号： G06F12/00
CPC分类号： G06F11/2074 , G06F2201/84 , Y10S707/99953 , Y10S707/99955
摘要： A method and system of providing periodic replication is disclosed. According to one embodiment, a method is provided which comprises creating a storage object corresponding to a data volume, wherein the storage object comprises a point-in-time copy of the data volume and a data volume map; and replicating the data volume utilizing the storage object.
摘要翻译：公开了提供周期性复制的方法和系统。根据一个实施例，提供了一种方法，其包括创建对应于数据卷的存储对象，其中所述存储对象包括所述数据卷的时间点副本和数据卷映射; 并利用存储对象复制数据量。

2. 发明授权

US07308545B1 Method and system of providing replication 有权
标题翻译：提供复制的方法和系统
公开(公告)号：US07308545B1
公开(公告)日：2007-12-11
申请号：US10723493
申请日：2003-11-26
申请人： Anand A. Kekre , Ronald S. Karr , John A. Colgrove , Kedar M. Karmarkar , Raghu Krishnamurthy , Saurabh R. Godbole , Ming Xu , Vikas K. Gupta , Deepak Tawri
发明人： Anand A. Kekre , Ronald S. Karr , John A. Colgrove , Kedar M. Karmarkar , Raghu Krishnamurthy , Saurabh R. Godbole , Ming Xu , Vikas K. Gupta , Deepak Tawri
IPC分类号： G06F12/00
CPC分类号： G06F11/2097 , G06F11/2023 , G06F2201/84 , H04L67/1095 , Y10S707/99953 , Y10S707/99955
摘要： A method and system of providing periodic replication is disclosed. According to one embodiment, a method is provided which comprises creating a storage object corresponding to a storage volume, wherein the storage object comprises a point-in-time copy of the storage volume and a storage volume map; and replicating the storage volume using the storage object.
摘要翻译：公开了提供周期性复制的方法和系统。根据一个实施例，提供了一种方法，其包括创建对应于存储卷的存储对象，其中所述存储对象包括所述存储卷的时间点副本和存储卷映射; 并使用存储对象复制存储卷。

3. 发明授权

US08401997B1 System and method for replication using consistency interval markers in a distributed storage environment 有权
标题翻译：在分布式存储环境中使用一致性间隔标记进行复制的系统和方法
公开(公告)号：US08401997B1
公开(公告)日：2013-03-19
申请号：US11230976
申请日：2005-09-20
申请人： Deepak Tawri , Ronald S. Karr , John A. Colgrove , Raghu Krishnamurthy , Anand A. Kekre , Robert Baird , Oleg Kiselev
发明人： Deepak Tawri , Ronald S. Karr , John A. Colgrove , Raghu Krishnamurthy , Anand A. Kekre , Robert Baird , Oleg Kiselev
IPC分类号： G06F7/00 , G06F17/00
CPC分类号： G06F11/2064 , G06F11/2071 , G06F2201/84 , G06F2201/855
摘要： Applications executing on various nodes in a distributed storage environment may write data to primary storage and may also replicate the data to secondary storage via a replication target. An interval coordinator may coordinate the periodic saving of checkpoints or snapshots of the replicated data. The interval coordinator may determine the length of consistency intervals between the saving of each of the checkpoints. Writes to the replication target from each of the nodes may be associated with the current consistency interval and, in some embodiments, with a unique per-node sequence number. When transitioning between consistency intervals, each node may be configured to temporarily suspend completion of the writes and to send the replication target a consistency interval marker indicating that the node has completed all writes for the current consistency interval.
摘要翻译：在分布式存储环境中在各种节点上执行的应用程序可以将数据写入主存储器，并且还可以经由复制目标将数据复制到辅助存储器。间隔协调器可以协调定期保存复制数据的检查点或快照。间隔协调器可以确定保存每个检查点之间的一致性间隔的长度。从每个节点写入复制目标可以与当前的一致性间隔相关联，并且在一些实施例中可以与唯一的每节点序列号相关联。当在一致性间隔之间转换时，可以将每个节点配置为临时挂起写入完成，并向复制目标发送指示节点已完成当前一致性间隔的所有写入的一致性间隔标记。

4. 发明授权

US07467265B1 System and method for block conflict resolution within consistency interval marker based replication 有权
标题翻译：基于一致性间隔标记的复制中的块冲突解决的系统和方法
公开(公告)号：US07467265B1
公开(公告)日：2008-12-16
申请号：US11231185
申请日：2005-09-20
申请人： Deepak Tawri , Ronald S. Karr , John A. Colgrove , Raghu Krishnamurthy , Anand A. Kekre , Robert Baird , Oleg Kiselev
发明人： Deepak Tawri , Ronald S. Karr , John A. Colgrove , Raghu Krishnamurthy , Anand A. Kekre , Robert Baird , Oleg Kiselev
IPC分类号： G06F12/00
CPC分类号： G06F12/0815 , G06F12/0813
摘要： One goal of consistency interval replication is to achieve a consistent copy of data generated by independent streams of writes from nodes in a clustered/distributed environment. Two writes to the same block from different nodes may arrive at a replication target in a different order from the order in which they were written to primary storage. A consistency interval coordinator may analyze a list of blocks modified during a consistency interval to determine conflict blocks written to by two different nodes during the same consistency interval. Conflict resolution may involve a node reading data for a conflict block from primary storage and forwarding it to the replication target or a node completing a suspended in-progress write for the conflict block. Once the conflicts have been resolved, the replication target may checkpoint the data modified during the interval and nodes may resume writes to the conflict blocks for the new interval.
摘要翻译：一致性间隔复制的一个目标是实现由集群/分布式环境中的独立的写入流生成的数据的一致副本。从不同节点对同一个块的两次写入可能会以与写入主存储的顺序不同的顺序到达复制目标。一致性间隔协调器可以分析在一致性间隔期间修改的块的列表，以确定在相同的一致性间隔期间由两个不同节点写入的冲突块。冲突解决可能涉及一个节点从主存储器读取冲突块的数据，并将其转发到复制目标或完成冲突块的暂停进行中写入的节点。一旦冲突已经解决，复制目标可以检查在间隔期间修改的数据，并且节点可以恢复对新间隔的冲突块的写入。

5. 发明授权

US07809691B1 System and method of applying incremental changes prior to initialization of a point-in-time copy 有权
标题翻译：在初始化时间点副本之前应用增量更改的系统和方法
公开(公告)号：US07809691B1
公开(公告)日：2010-10-05
申请号：US11063133
申请日：2005-02-22
申请人： Kedar M. Karmarkar , Deepak Tawri , Raghu Krishnamurthy
发明人： Kedar M. Karmarkar , Deepak Tawri , Raghu Krishnamurthy
IPC分类号： G06F17/30 , G06F12/00
CPC分类号： G06F11/1448 , G06F11/1464 , G06F11/1469 , G06F11/1658 , G06F11/202
摘要： Various systems and methods are disclosed for applying incremental changes prior to initialization of a point-in-time copy. For example, one method involves identifying an incremental change to information stored on a primary device. The incremental change is identified subsequent to a first point in time. The incremental change is applied to a first target device, prior to completing initialization of a second target device. The initialization of the second target device initializes the second target device as a point-in-time copy of the primary device. The point-in-time copy of the primary device is a copy of the primary device at the first point in time.
摘要翻译：公开了用于在初始化时间点副本之前应用增量变化的各种系统和方法。例如，一种方法涉及识别存储在主设备上的信息的增量变化。在第一个时间点之后确定增量更改。在完成第二目标设备的初始化之前，增量变化被应用于第一目标设备。第二目标设备的初始化将第二目标设备初始化为主设备的时间点副本。主设备的时间点副本是第一个时间点的主设备的副本。

6. 发明授权

US07406487B1 Method and system for performing periodic replication using a log 有权
标题翻译：使用日志执行周期性复制的方法和系统
公开(公告)号：US07406487B1
公开(公告)日：2008-07-29
申请号：US10652380
申请日：2003-08-29
申请人： Vikas K. Gupta , Kedar M. Karmarkar , Raghu Krishnamurthy
发明人： Vikas K. Gupta , Kedar M. Karmarkar , Raghu Krishnamurthy
IPC分类号： G06F17/30
CPC分类号： G06F17/30575 , G06F17/30215 , Y10S707/99952 , Y10S707/99953 , Y10S707/99955
摘要： Disclosed is a method and system for performing periodic replication using a write-ordered log. According to one embodiment, a plurality of write operations to a primary data volume are tracked using a write operation log and then data associated with the plurality of write operations is replicated to a secondary data volume by coalescing the plurality of write operations utilizing the write operation log and transferring data associated with the plurality of write operations to the secondary data volume. According to another embodiment the described tracking includes storing metadata associated with the plurality of write operations within the write operation log. In another embodiment, the described coalescing includes identifying a non-overlapping portion of a first write operation and a second write operation of the plurality of write operations utilizing the metadata.
摘要翻译：公开了一种使用写入有序日志执行周期性复制的方法和系统。根据一个实施例，使用写入操作日志跟踪对主要数据卷的多个写入操作，然后通过使用写入操作来合并多个写入操作来将与多个写入操作相关联的数据复制到辅助数据卷将与多个写入操作相关联的数据记录并传送到辅助数据卷。根据另一个实施例，所描述的跟踪包括在写入操作日志内存储与多个写入操作相关联的元数据。在另一个实施例中，所述聚合包括利用元数据来识别多个写入操作的第一写入操作和第二写入操作的非重叠部分。

7. 发明授权

US08825870B1 Techniques for non-disruptive transitioning of CDP/R services 有权
标题翻译： CDP / R服务的非破坏性转换技术
公开(公告)号：US08825870B1
公开(公告)日：2014-09-02
申请号：US11771608
申请日：2007-06-29
申请人： Deepak Tawri , Abhay Kumar Singh , Raghu Krishnamurthy , Gopal Sharma
发明人： Deepak Tawri , Abhay Kumar Singh , Raghu Krishnamurthy , Gopal Sharma
IPC分类号： G06F15/16 , G06F15/173 , G06F15/177 , G06F15/167 , G06F12/00
CPC分类号： H04L12/56
摘要： Techniques for CDP/R services are disclosed. In one particular exemplary embodiment, the techniques may be realized as a method of transitioning continuous data protection and replication comprising determining whether a first appliance node connected to a switched fabric contains one or more transactions received from a host node, unregistering a world wide port name of a target port of the first appliance node, registering the world wide port name to a target port of a second appliance node connected to the switched fabric, associating one or more logical unit numbers of the second appliance node with the target port of the second appliance node, exporting the one or more logical unit numbers of the second appliance node, logging the target port of the second appliance node into a switched fabric, and logging the target port of the second appliance node into a remote node port of the host node.
摘要翻译：公开了CDP / R服务的技术。在一个特定的示例性实施例中，可以将技术实现为转换连续数据保护和复制的方法，包括确定连接到交换结构的第一设备节点是否包含从主机节点接收的一个或多个事务，注销全球端口名称将所述全球端口名称注册到连接到所述交换结构的第二设备节点的目标端口，将所述第二设备节点的一个或多个逻辑单元号与所述第二设备节点的目标端口相关联导出第二设备节点的一个或多个逻辑单元号，将第二设备节点的目标端口记录到交换结构中，以及将第二设备节点的目标端口记录到主机节点的远程节点端口中。

8. 发明授权

US08082406B1 Techniques for reducing data storage needs using CDP/R 有权
标题翻译：使用CDP / R减少数据存储需求的技术
公开(公告)号：US08082406B1
公开(公告)日：2011-12-20
申请号：US11862932
申请日：2007-09-27
申请人： Abhay Kumar Singh , Raghu Krishnamurthy , Gopal Sharma , Deepak Tawri
发明人： Abhay Kumar Singh , Raghu Krishnamurthy , Gopal Sharma , Deepak Tawri
IPC分类号： G06F13/00 , G06F13/28
CPC分类号： G06F11/2094 , G06F3/0608 , G06F3/065 , G06F3/067 , G06F11/1471 , G06F11/2048 , G06F2201/84
摘要： Techniques for reducing data storage needs using continuous data protection and replication are disclosed. In one particular exemplary embodiment, the techniques may be realized as a method for reducing data storage needs using a continuous data protection and replication device comprising creating a master image of material identified by a user, generating a virtual replica of the master image on a storage area network using the continuous data protection and replication device to virtualize physical storage containing the master image, generating a copy of the virtual replica on the storage area network, and providing a virtual logical unit number to access the copy, wherein the access enables a process which requires exclusive access to content of the master image to obtain such access without requiring physical storage for an entire copy of the master image.
摘要翻译：公开了使用连续数据保护和复制来减少数据存储需求的技术。在一个特定的示例性实施例中，这些技术可以被实现为用于使用连续数据保护和复制设备来减少数据存储需求的方法，包括创建由用户标识的材料的主图像，在存储器上生成主图像的虚拟副本使用所述连续数据保护和复制设备对包含所述主映像的物理存储进行虚拟化，在所述存储区域网络上生成所述虚拟副本的副本，以及提供虚拟逻辑单元号码以访问所述副本，其中所述访问启用进程这需要对主图像的内容的独占访问以获得这种访问，而不需要主图像的整个副本的物理存储。

9. 发明授权

US07979396B1 System and method for performing consistent resynchronization between synchronized copies 有权
标题翻译：在同步副本之间执行一致的重新同步的系统和方法
公开(公告)号：US07979396B1
公开(公告)日：2011-07-12
申请号：US11167954
申请日：2005-06-28
申请人： Raghu Krishnamurthy , Arvind Arun Pande , Deepak Tawri
发明人： Raghu Krishnamurthy , Arvind Arun Pande , Deepak Tawri
IPC分类号： G06F7/00 , G06F17/00
CPC分类号： G06F17/30575
摘要： A method involves detecting that a first storage device is inaccessible. The information stored on the first storage device is a synchronized copy of information stored on a second storage device. In response to detecting that the first storage device is inaccessible, modification logging is initiated. Modification logging involves detecting modifications to information stored on the second storage device and storing information that indicates an order in which the modifications occur to the second storage device. The stored information can indicate the order explicitly (e.g., by including a timestamp or sequence number) or indirectly (e.g., the order of entries stored in a log can indicate the order of the modifications represented by those entries). The stored information can also include the new values generated by the modifications. The stored information can then be used to resynchronize the information stored on the first and second storage devices.
摘要翻译：一种方法涉及检测第一存储设备是不可访问的。存储在第一存储设备上的信息是存储在第二存储设备上的信息的同步副本。响应于检测到第一存储设备不可访问，修改日志记录被启动。修改日志记录包括检测对存储在第二存储设备上的信息的修改，并且存储指示修改发生到第二存储设备的顺序的信息。存储的信息可以明确地指示订单（例如，通过包括时间戳或序列号）或间接地（例如，存储在日志中的条目的顺序可以指示由这些条目表示的修改的顺序）。存储的信息还可以包括由修改生成的新值。所存储的信息然后可用于重新同步存储在第一和第二存储设备上的信息。

10. 发明授权

US07461230B1 Maintaining spatial locality of write operations 有权
标题翻译：保持写入操作的空间位置
公开(公告)号：US07461230B1
公开(公告)日：2008-12-02
申请号：US11095906
申请日：2005-03-31
申请人： Vikas K. Gupta , Ashish Agarwal , Raghu Krishnamurthy
发明人： Vikas K. Gupta , Ashish Agarwal , Raghu Krishnamurthy
IPC分类号： G06F12/00
CPC分类号： G06F11/2082 , G06F11/2074
摘要： A method, system, computer system, and computer-readable medium that identify the number of times areas of storage are updated and use that information to synchronize primary and secondary storage areas. The invention enables quick resumption of operations upon a discovery that primary and secondary data have become unsynchronized. Regions of storage that are unsynchronized can be identified quickly without the need to read the change log. In addition, data are copied efficiently, with minimal or no duplication of effort or data. Faster and more reliable storage can be allocated for storing regions of data that are “hot spots,” thereby making better use of existing storage resources and budgets.
摘要翻译：识别存储区域的次数的方法，系统，计算机系统和计算机可读介质被更新，并且使用该信息来同步主存储区域和辅助存储区域。本发明能够在发现主数据和辅助数据已经不同步时快速恢复操作。可以快速识别不同步的存储区域，而无需读取更改日志。此外，数据可以有效地复制，只需极少或不重复的努力或数据。可以分配更快更可靠的存储来存储“热点”的数据区域，从而更好地利用现有的存储资源和预算。

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