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    • 4. 发明授权
    • Failover method of remotely-mirrored clustered file servers
    • 远程镜像的群集文件服务器的故障切换方法
    • US08099622B2
    • 2012-01-17
    • US12408951
    • 2009-03-23
    • Hidehisa ShitomiManabu Kitamura
    • Hidehisa ShitomiManabu Kitamura
    • G06F11/00
    • G06F11/2092G06F11/2097
    • By incorporating a referral mechanism, a failover method and system for remotely mirrored clustered file servers enables a client computer to transparently access a remotely mirrored file system during a failover of a first NAS (network attached storage) storing the file system. The first NAS is clustered with a second NAS that takes over the IP address of the first NAS on failover. A mirroring relationship is established between the first NAS and a third NAS whereby a copy of the file system is replicated to the third NAS. A referral is created on the second NAS, such that an access attempt from the client computer for accessing the first file system that is directed to the second NAS following IP address takeover from the first NAS after failover is referred to the third NAS by the referral to enable the client computer to access the copy of the file system.
    • 通过结合引荐机制,用于远程镜像的群集文件服务器的故障转移方法和系统使客户端计算机能够在存储文件系统的第一个NAS(网络连接存储)的故障转移期间透明地访问远程镜像文件系统。 第一个NAS与第二个NAS集群,第二个NAS在故障转移时接管第一个NAS的IP地址。 在第一NAS和第三NAS之间建立镜像关系,由此将文件系统的副本复制到第三NAS。 在第二NAS上创建引用,使得在故障转移之后,从第一NAS接收到IP地址后,来自客户端计算机的用于访问第一个文件系统的访问尝试被引用到第三个NAS。 以使客户端计算机可以访问文件系统的副本。
    • 7. 发明申请
    • External storage apparatus and method of preventing information leakage
    • 外部存储装置和防止信息泄漏的方法
    • US20090271619A1
    • 2009-10-29
    • US12007460
    • 2008-01-10
    • Kenji FujiiDaisuke KitoManabu Kitamura
    • Kenji FujiiDaisuke KitoManabu Kitamura
    • H04L9/00G06F12/14H04L9/14
    • G06F21/78G06F21/88G06F2221/2143
    • Proposed is an apparatus and method of preventing the leakage of information from an external storage apparatus even when such external storage apparatus is stolen or accessed from an unauthorized host computer. This external storage apparatus accessible from a host computer or another external storage apparatus via a network encrypts or decrypts data written from a host computer to be stored in the storage area, sends a request for existence confirmation to the host computer or the other external storage apparatus every predetermined period of time, and zeroizes an encryption key to be used in the encryption calculation for encrypting or decrypting data to be performed by the encryption calculation unit based on the result of a response from the host computer or the other external storage apparatus in reply to the request.
    • 提出了即使当这种外部存储装置从未授权的主计算机被盗或访问时,也可以防止信息从外部存储装置泄露的装置和方法。 可以通过网络从主机或其他外部存储装置访问的该外部存储装置对从主计算机写入的要存储在存储区域中的数据进行加密或解密,向主计算机或其他外部存储装置发送存在确认请求 并根据来自主机或其他外部存储装置的响应结果,对由加密计算单元进行加密或解密的数据进行加密运算时使用的加密密钥归零 要求。
    • 8. 发明授权
    • Failover method of remotely-mirrored clustered file servers
    • 远程镜像的群集文件服务器的故障切换方法
    • US07526668B2
    • 2009-04-28
    • US11448907
    • 2006-06-08
    • Hidehisa ShitomiManabu Kitamura
    • Hidehisa ShitomiManabu Kitamura
    • G06F11/00
    • G06F11/2092G06F11/2097
    • By incorporating a referral mechanism, a failover method and system for remotely mirrored clustered file servers enables a client computer to transparently access a remotely mirrored file system during a failover of a first NAS (network attached storage) storing the file system. The first NAS is clustered with a second NAS that takes over the IP address of the first NAS on failover. A mirroring relationship is established between the first NAS and a third NAS whereby a copy of the file system is replicated to the third NAS. A referral is created on the second NAS, such that an access attempt from the client computer for accessing the first file system that is directed to the second NAS following IP address takeover from the first NAS after failover is referred to the third NAS by the referral to enable the client computer to access the copy of the file system.
    • 通过结合引荐机制,用于远程镜像的群集文件服务器的故障转移方法和系统使客户端计算机能够在存储文件系统的第一个NAS(网络连接存储)的故障转移期间透明地访问远程镜像文件系统。 第一个NAS与第二个NAS集群,第二个NAS在故障转移时接管第一个NAS的IP地址。 在第一NAS和第三NAS之间建立镜像关系,由此将文件系统的副本复制到第三NAS。 在第二NAS上创建引用,使得在故障转移之后,从第一NAS接收到IP地址后,来自客户端计算机的用于访问第一个文件系统的访问尝试被引用到第三个NAS。 以使客户端计算机可以访问文件系统的副本。
    • 9. 发明授权
    • Fail-over storage system
    • 故障转移存储系统
    • US07447933B2
    • 2008-11-04
    • US11316463
    • 2005-12-21
    • Naoto MatsunamiKouji SonodaManabu KitamuraTakashi OedaYutaka Takata
    • Naoto MatsunamiKouji SonodaManabu KitamuraTakashi OedaYutaka Takata
    • G06F11/00
    • G06F11/2092G06F11/0727G06F11/0766G06F11/2025G06F11/2033G06F11/2043G06F11/2069
    • A storage system 1 including multiple slots for loading a block I/O interface controller, a file I/O interface controller, and any other kinds of interface controllers that are combined freely. The storage system 1 includes a management table that manages fail-over-enabled devices by grouping those devices in accordance with the interface type and the domain to which each device belongs; an information table that directs a fail-over procedure; and fail-over controlling means that takes over the processing of a failed interface controller belonging to a fail-over-enabled group. The fail-over system offers several modalities for monitoring failures, selecting takeover controllers and restoring functionality. Storage system 1 solves conventional problems by providing a system that can mount a plurality of file systems, and that resists multiple failures detected in a fail-over server.
    • 包括用于加载块I / O接口控制器的多个槽的存储系统1,文件I / O接口控制器和可以自由组合的任何其他类型的接口控制器。 存储系统1包括管理表,其通过根据每个设备所属的接口类型和域对这些设备进行分组来管理故障转移使能设备; 指导故障切换过程的信息表; 故障切换控制手段接管属于故障转移组的故障接口控制器的处理。 故障转移系统提供了几种监控故障模式,选择接管控制器和恢复功能。 存储系统1通过提供可以安装多个文件系统并且抵御在故障切换服务器中检测到的多个故障的系统来解决常规问题。