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1. 发明授权

US08699322B1 Port identifier management for path failover in cluster environments 有权
标题翻译：集群环境中路径故障转移的端口标识符管理
公开(公告)号：US08699322B1
公开(公告)日：2014-04-15
申请号：US12856994
申请日：2010-08-16
申请人： Deepak K. Tawri , Abhay K. Singh , Raghu Krishnamurthy
发明人： Deepak K. Tawri , Abhay K. Singh , Raghu Krishnamurthy
IPC分类号： H04J1/16
CPC分类号： H04L45/28 , G06F11/006 , G06F11/2005 , G06F11/2007 , H04L29/12207 , H04L29/12839 , H04L61/20 , H04L61/6022 , H04L67/1097 , H04L69/40
摘要： A method includes assigning a port identifier to a first port on a node and communicating data on a first path between the first port and a logical unit on an active/passive storage array. The port identifier is registered in a persistent reservation scheme for the logical unit. The method also includes detecting a failure of the first path, de-assigning the port identifier from the first port, assigning the port identifier to a second port on the first node, and resuming communications between the node and the logical unit. One implementation of a system includes a first port configured to communicate with a storage device, a second port configured to communicate with the storage device, and an identifier management block. The identifier management block executes a failover with N_Port ID Virtualization commands that transfer a world wide port name from the first port to the second port.
摘要翻译：一种方法包括将端口标识符分配给节点上的第一端口，并且在主动/被动存储阵列上的第一端口与逻辑单元之间的第一路径上传送数据。端口标识符被注册在用于逻辑单元的持久预留方案中。该方法还包括检测第一路径的故障，从第一端口去分配端口标识符，将端口标识符分配给第一节点上的第二端口，以及恢复节点与逻辑单元之间的通信。系统的一个实现包括被配置为与存储设备通信的第一端口，被配置为与存储设备通信的第二端口以及标识符管理块。标识符管理块使用N_Port ID Virtualization命令执行故障转移，该命令将全球端口名称从第一个端口传输到第二个端口。

2. 发明授权

US07272674B1 System and method for storage device active path coordination among hosts 有权
标题翻译：主机之间的存储设备主动路径协调的系统和方法
公开(公告)号：US07272674B1
公开(公告)日：2007-09-18
申请号：US10610137
申请日：2003-06-30
申请人： Siddhartha Nandi , Abhay K. Singh , Oleg Kiselev
发明人： Siddhartha Nandi , Abhay K. Singh , Oleg Kiselev
IPC分类号： G06F3/00
CPC分类号： H04L67/1097
摘要： Systems, methods, apparatus and software can make use of persistent reservation commands to establish the port of a shared device that is to be used as an active port by one or more host computer systems coupled to the shared device. Information about one or more paths used to transmit data between a host computer system and the shared device can be used by other host computer systems.
摘要翻译：系统，方法，装置和软件可以利用永久保留命令来建立由共享设备耦合的一个或多个主机系统用作活动端口的共享设备的端口。关于用于在主计算机系统和共享设备之间传输数据的一个或多个路径的信息可被其它主机系统使用。

3. 发明授权

US08443232B1 Automatic clusterwide fail-back 有权
标题翻译：自动群集故障恢复
公开(公告)号：US08443232B1
公开(公告)日：2013-05-14
申请号：US13076974
申请日：2011-03-31
申请人： Venkata Sreenivasa Rao Nagineni , Siddhartha Nandi , Abhay K. Singh
发明人： Venkata Sreenivasa Rao Nagineni , Siddhartha Nandi , Abhay K. Singh
IPC分类号： G06F11/00
CPC分类号： G06F11/2092 , G06F11/2033 , G06F11/2035 , G06F11/2046
摘要： Systems and procedures may be used to coordinate the fail-back of multiple hosts in environments where the hosts share one or more data-storage resources. In one implementation, a procedure for coordinating fail-backs includes monitoring a failed data path to detect a restoration of the data path, polling remaining nodes in response to the restoration, and allowing the first node to resume communications if access has been restored to the remaining nodes.
摘要翻译：可以使用系统和过程来协调主机共享一个或多个数据存储资源的环境中的多个主机的故障转移。在一个实现中，用于协调故障切换的过程包括监视故障数据路径以检测数据路径的恢复，响应于恢复轮询剩余节点，并且允许第一节点恢复通信，如果访问已经恢复到剩余节点。

4. 发明授权

US07937617B1 Automatic clusterwide fail-back 有权
标题翻译：自动群集故障恢复
公开(公告)号：US07937617B1
公开(公告)日：2011-05-03
申请号：US11261269
申请日：2005-10-28
申请人： Venkata Sreenivasa Rao Nagineni , Siddhartha Nandi , Abhay K. Singh
发明人： Venkata Sreenivasa Rao Nagineni , Siddhartha Nandi , Abhay K. Singh
IPC分类号： G06F11/00
CPC分类号： G06F11/2092 , G06F11/2033 , G06F11/2035 , G06F11/2046
摘要： Systems and procedures may be used to coordinate the fail-back of multiple hosts in environments where the hosts share one or more data-storage resources. In one implementation, a procedure for coordinating fail-backs includes monitoring a failed data path to detect a restoration of the data path, polling remaining nodes in response to the restoration, and allowing the first node to resume communications if access has been restored to the remaining nodes.
摘要翻译：可以使用系统和过程来协调主机共享一个或多个数据存储资源的环境中的多个主机的故障转移。在一个实现中，用于协调故障切换的过程包括监视故障数据路径以检测数据路径的恢复，响应于恢复轮询剩余节点，并且允许第一节点恢复通信，如果访问已经恢复到剩余节点。

5. 发明授权

US07778157B1 Port identifier management for path failover in cluster environments 有权
标题翻译：集群环境中路径故障转移的端口标识符管理
公开(公告)号：US07778157B1
公开(公告)日：2010-08-17
申请号：US11731854
申请日：2007-03-30
申请人： Deepak K. Tawri , Abhay K. Singh , Raghu Krishnamurthy
发明人： Deepak K. Tawri , Abhay K. Singh , Raghu Krishnamurthy
IPC分类号： H04J1/16
CPC分类号： H04L45/28 , G06F11/006 , G06F11/2005 , G06F11/2007 , H04L29/12207 , H04L29/12839 , H04L61/20 , H04L61/6022 , H04L67/1097 , H04L69/40
摘要： A method includes assigning a port identifier to a first port on a node and communicating data on a first path between the first port and a logical unit on an active/passive storage array. The port identifier is registered in a persistent reservation scheme for the logical unit. The method also includes detecting a failure of the first path, de-assigning the port identifier from the first port, assigning the port identifier to a second port on the first node, and resuming communications between the node and the logical unit. One implementation of a system includes a first port configured to communicate with a storage device, a second port configured to communicate with the storage device, and an identifier management block. The identifier management block executes a failover with N_Port ID Virtualization commands that transfer a world wide port name from the first port to the second port.
摘要翻译：一种方法包括将端口标识符分配给节点上的第一端口，并且在主动/被动存储阵列上的第一端口与逻辑单元之间的第一路径上传送数据。端口标识符被注册在用于逻辑单元的持久预留方案中。该方法还包括检测第一路径的故障，从第一端口去分配端口标识符，将端口标识符分配给第一节点上的第二端口，以及恢复节点与逻辑单元之间的通信。系统的一个实现包括被配置为与存储设备通信的第一端口，被配置为与存储设备通信的第二端口以及标识符管理块。标识符管理块使用N_Port ID Virtualization命令执行故障转移，该命令将全球端口名称从第一个端口传输到第二个端口。

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