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1. 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。

2. 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。

3. 发明授权

US08327028B1 Method and apparatus for providing time synchronization in a data protection system 有权
标题翻译：用于在数据保护系统中提供时间同步的方法和装置
公开(公告)号：US08327028B1
公开(公告)日：2012-12-04
申请号：US12235295
申请日：2008-09-22
申请人： Dharmesh Shah , Gopal Sharma , Grizel Lopez , Abhay Kumar Singh , Taher Vohra , Srikant Sharma
发明人： Dharmesh Shah , Gopal Sharma , Grizel Lopez , Abhay Kumar Singh , Taher Vohra , Srikant Sharma
IPC分类号： G06F15/16
CPC分类号： H04L69/28 , G06F11/1464 , G06F11/1471 , G06F21/645 , G06F2201/835 , H04L69/40
摘要： A method and apparatus for synchronizing time within a data protection system is described. In one embodiment, the method includes processing input/output activity information associated with at least one client computer, wherein the input/output activity information comprises at least one local client timestamp, determining at least one server timestamp for the at least one local client timestamp and modifying the input/output activity information with the at least one server timestamp.
摘要翻译：描述用于在数据保护系统内同步时间的方法和装置。在一个实施例中，该方法包括处理与至少一个客户端计算机相关联的输入/输出活动信息，其中输入/输出活动信息包括至少一个本地客户端时间戳，确定至少一个本地客户端时间戳的至少一个服务器时间戳以及使用所述至少一个服务器时间戳修改所述输入/输出活动信息。

4. 发明授权

US08694538B1 Method and apparatus for logging write requests to a storage volume in a network data switch 有权
标题翻译：将写入请求记录到网络数据交换机中的存储卷的方法和装置
公开(公告)号：US08694538B1
公开(公告)日：2014-04-08
申请号：US10871827
申请日：2004-06-18
申请人： Gopal Sharma , Santosh S. Rao , Amitava Guha , Raghu Krishnamurthy , Múkul Kumar
发明人： Gopal Sharma , Santosh S. Rao , Amitava Guha , Raghu Krishnamurthy , Múkul Kumar
IPC分类号： G06F17/30 , G06F15/173
CPC分类号： G06F17/30233
摘要： A method and apparatus for logging write requests to a storage volume in a network data switch is described. In one example, a switch component in a switch receives a write request from a host server. The write request is associated with a destination in the storage volume. A logging element is identified that is associated with the destination of the write request. The logging element may be a switch component in the switch (e.g., a virtualization card), or may be dedicated logging circuitry in the switch. The identified logging element then logs a write intent for the destination in a log.
摘要翻译：描述了用于将写请求记录在网络数据交换机中的存储卷的方法和装置。在一个示例中，交换机中的交换机组件从主机服务器接收写入请求。写请求与存储卷中的目标相关联。识别与写请求的目的地相关联的记录元素。记录元件可以是开关中的开关部件（例如，虚拟化卡），或者可以是开关中的专用测井电路。然后，标识的日志记录元素在日志中记录目的地的写入意图。

5. 发明授权

US07680839B1 System and method for resynchronizing mirrored volumes 有权
标题翻译：用于重新同步镜像卷的系统和方法
公开(公告)号：US07680839B1
公开(公告)日：2010-03-16
申请号：US10955017
申请日：2004-09-30
申请人： Raghu Krishnamurthy , Gopal Sharma , Amitava Guha
发明人： Raghu Krishnamurthy , Gopal Sharma , Amitava Guha
IPC分类号： G06F12/00
CPC分类号： G06F11/2082 , G06F11/1435 , G06F11/2071 , G06F2201/84
摘要： System and method for resynchronizing mirrored volumes in a storage system. According to one embodiment, a system may include a first volume located at a primary site and associated with a first storage management device, and a second volume located at a secondary site and associated with a second storage management device, where the secondary site is coupled to the primary site via a data link, and where the second volume is configured as a mirror of the first volume. The first storage management device may be configured to convey to the second storage management device an indication of a data block written to the first volume subsequent to a failure of the data link. Dependent upon the indication, the second storage management device may be configured to create a snapshot of the data block as stored on the second volume prior to resynchronization of the data block.
摘要翻译：在存储系统中重新同步镜像卷的系统和方法。根据一个实施例，系统可以包括位于主站点并与第一存储管理设备相关联的第一卷以及位于辅助站点并与第二存储管理设备相关联的第二卷，其中辅站点被耦合通过数据链接到主站点，并且其中第二卷被配置为第一卷的镜像。第一存储管理装置可以被配置为在数据链路发生故障之后向第二存储管理装置传送写入第一卷的数据块的指示。根据指示，第二存储管理设备可以被配置为在数据块重新同步之前创建存储在第二卷上的数据块的快照。

6. 发明授权

US08046446B1 System and method for providing availability using volume server sets in a storage environment employing distributed block virtualization 有权
标题翻译：使用分布式块虚拟化的存储环境中的卷服务器集提供可用性的系统和方法
公开(公告)号：US08046446B1
公开(公告)日：2011-10-25
申请号：US10967902
申请日：2004-10-18
申请人： Ronald S. Karr , Chio Fai Aglaia Kong , Gopal Sharma , Robert Baird , Santosh Rao
发明人： Ronald S. Karr , Chio Fai Aglaia Kong , Gopal Sharma , Robert Baird , Santosh Rao
IPC分类号： G06F15/173
CPC分类号： H04L67/1097
摘要： A system for ensuring availability using volume server sets in a storage environment employing distributed block virtualization includes a plurality of volume servers, one or more volume clients, one or more physical block devices and a volume server manager. The volume server manager may be configured to designate the plurality of volume servers as a volume server set with an associated volume server set management policy, and to verify each volume server in the volume server set has access to storage within each block device. In addition, the volume server manager may be configured to designate a first volume server of the volume server set to aggregate storage within the block devices into a logical volume, to make the logical volume accessible to the volume clients, and to share configuration information about the volume with the other volume servers of the volume server set.
摘要翻译：在使用分布式块虚拟化的存储环境中使用卷服务器集确保可用性的系统包括多个卷服务器，一个或多个卷客户端，一个或多个物理块设备和卷服务器管理器。卷服务器管理器可以被配置为将多个卷服务器指定为具有相关联的卷服务器集管理策略的卷服务器，并且验证卷服务器集合中的每个卷服务器都可以访问每个块设备内的存储。此外，卷服务器管理器可以被配置为指定卷服务器集合的第一卷服务器，以将块设备内的存储聚合成逻辑卷，以使卷客户端可访问逻辑卷，并共享关于与卷服务器的其他卷服务器的卷设置的卷。

7. 发明授权

US07028078B1 System and method for performing virtual device I/O operations 有权
标题翻译：用于执行虚拟设备I / O操作的系统和方法
公开(公告)号：US07028078B1
公开(公告)日：2006-04-11
申请号：US10610204
申请日：2003-06-30
申请人： Gopal Sharma , Oleg Kiselev , Santosh Shankar Rao
发明人： Gopal Sharma , Oleg Kiselev , Santosh Shankar Rao
IPC分类号： G06F15/167
CPC分类号： G06F3/0664 , G06F3/0607 , G06F3/0637 , G06F3/067 , H04L67/1097
摘要： Systems, methods, apparatus and software can make use of separated I/O processors and strategy processors (implemented in hardware and/or software) to perform virtual device I/O operations. I/O processors operating on cluster nodes, storage appliance ports, or other devices can receive I/O operation requests directed to virtual devices, e.g., volumes or virtual logical units. Information about the request is forwarded to a strategy processor, operating independently or as part of larger volume management software where corresponding physical device I/O operations are determined. The physical device I/O operations can include additional information about the operations, e.g., tag information and summary information, for use in processing the virtual device I/O request. The physical device I/O operations are sent back to the I/O processor which executes the operations and/or passes the operation on to the appropriate storage device. I/O completion messages are sent by the I/O processor in parallel to the source of the I/O request (e.g., a host or application) and to the strategy processor, providing an improvement in I/O latency.
摘要翻译：系统，方法，设备和软件可以使用分离的I / O处理器和策略处理器（以硬件和/或软件实现）来执行虚拟设备I / O操作。在集群节点，存储设备端口或其他设备上运行的I / O处理器可以接收定向到虚拟设备（例如卷或虚拟逻辑单元）的I / O操作请求。有关请求的信息被转发到策略处理器，独立运行，或作为确定相应物理设备I / O操作的较大卷管理软件的一部分。物理设备I / O操作可以包括关于操作的附加信息，例如用于处理虚拟设备I / O请求的标签信息和摘要信息。物理设备I / O操作被发送回执行操作的I / O处理器和/或将操作传递到适当的存储设备。 I / O处理器与I / O请求的源（例如主机或应用程序）并行地向处理器发送I / O完成消息，从而提供I / O延迟的改进。

8. 发明授权

US07627699B1 System and method for managing I/O access policies in a storage environment employing asymmetric distributed block virtualization 有权
标题翻译：在采用非对称分布式块虚拟化的存储环境中管理I / O访问策略的系统和方法
公开(公告)号：US07627699B1
公开(公告)日：2009-12-01
申请号：US11865034
申请日：2007-09-30
申请人： Kalaivani Arumugham , Santosh Rao , Gopal Sharma , Poonam Dhavale , Randy Shingai , Ronald S. Karr , Oleg Kiselev , Shie-Rei Huang
发明人： Kalaivani Arumugham , Santosh Rao , Gopal Sharma , Poonam Dhavale , Randy Shingai , Ronald S. Karr , Oleg Kiselev , Shie-Rei Huang
IPC分类号： G06F13/00 , G06F15/16 , G06F15/167
CPC分类号： G06F3/0637 , G06F3/0605 , G06F3/067
摘要： A system employing asymmetric distributed block virtualization includes a volume server, a plurality of volume clients, and one or more physical block devices. The volume server aggregates storage in the physical block devices into a logical volume and makes the logical volume accessible to the volume clients for input/output (I/O) operations. In order to manage different I/O access requirements (such as read-only access versus read-write access) of the volume clients, the volume server maintains a different I/O access policy for each volume client to control the kinds of input/output operations that the volume client is allowed to perform on the logical volume.
摘要翻译：采用非对称分布式块虚拟化的系统包括卷服务器，多个卷客户机以及一个或多个物理块设备。卷服务器将物理块设备中的存储器聚合到逻辑卷中，并使卷客户端可以访问逻辑卷进行输入/输出（I / O）操作。为了管理卷客户端的不同I / O访问要求（例如只读访问权限与读写访问权限），卷服务器为每个卷客户端维护不同的I / O访问策略，以控制输入/ 允许卷客户端在逻辑卷上执行的输出操作。

9. 发明授权

US07398350B1 Distribution of data volume virtualization 有权
标题翻译：分布数据量虚拟化
公开(公告)号：US07398350B1
公开(公告)日：2008-07-08
申请号：US10696622
申请日：2003-10-29
申请人： Narasimha R. Valiveti , Ronald S. Karr , Randall K. Shigai , Gopal Sharma
发明人： Narasimha R. Valiveti , Ronald S. Karr , Randall K. Shigai , Gopal Sharma
IPC分类号： G06F12/00
CPC分类号： G06F3/0665 , G06F3/0619 , G06F3/0635 , G06F3/0659 , G06F3/067
摘要： After a first device (e.g., a host node in a shared data clustered system that stores a two-way mirrored volume) in a network creates or modifies a description of a layout for a data volume, the first device transmits separate copies of the data volume layout description to a pair of second devices, respectively, for storage in respective memories thereof. The first device may be a host node, and the pair of second devices may be first and second data storage systems. The first device and the pair of second devices are configured so that I/O transactions are transmitted between the first device and either of the pair of second devices. In other words, the first device is contained in a network layer that is different from the network layer that contains the pair of second devices.
摘要翻译：在网络中的第一设备（例如，存储双向镜像卷的共享数据集群系统中的主机节点）创建或修改数据卷的布局的描述之后，第一设备传送数据的单独副本体积布局描述分别用于存储在其相应存储器中的一对第二设备。第一设备可以是主机节点，并且该对第二设备可以是第一和第二数据存储系统。第一设备和第二设备对被配置为使得I / O事务在第一设备和第二设备中的任一个之间传送。换句话说，第一设备被包含在不同于包含该对第二设备的网络层的网络层中。

10. 发明授权

US07328287B1 System and method for managing I/O access policies in a storage environment employing asymmetric distributed block virtualization 有权
标题翻译：在采用非对称分布式块虚拟化的存储环境中管理I / O访问策略的系统和方法
公开(公告)号：US07328287B1
公开(公告)日：2008-02-05
申请号：US10899201
申请日：2004-07-26
申请人： Kalaivani Arumugham , Santosh Rao , Gopal Sharma , Poonam Dhavale , Randy Shingai , Ronald S. Karr , Oleg Kiselev , Shie-Rei Huang
发明人： Kalaivani Arumugham , Santosh Rao , Gopal Sharma , Poonam Dhavale , Randy Shingai , Ronald S. Karr , Oleg Kiselev , Shie-Rei Huang
IPC分类号： G06F13/00 , G06F15/16 , G06F15/167
CPC分类号： G06F3/0637 , G06F3/0605 , G06F3/067
摘要： A system employing asymmetric distributed block virtualization includes a volume server, a plurality of volume clients, and one or more physical block devices. The volume server aggregates storage in the physical block devices into a logical volume and makes the logical volume accessible to the volume clients for input/output (I/O) operations. In order to manage different I/O access requirements (such as read-only access versus read-write access) of the volume clients, the volume server maintains a different I/O access policy for each volume client to control the kinds of input/output operations that the volume client is allowed to perform on the logical volume.
摘要翻译：采用非对称分布式块虚拟化的系统包括卷服务器，多个卷客户机以及一个或多个物理块设备。卷服务器将物理块设备中的存储器聚合到逻辑卷中，并使卷客户端可以访问逻辑卷进行输入/输出（I / O）操作。为了管理卷客户端的不同I / O访问要求（例如只读访问权限与读写访问权限），卷服务器为每个卷客户端维护不同的I / O访问策略，以控制输入/ 允许卷客户端在逻辑卷上执行的输出操作。

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