Managing data deduplication in storage systems
    61.
    发明授权
    Managing data deduplication in storage systems 有权
    管理存储系统中的重复数据删除

    公开(公告)号:US09449011B1

    公开(公告)日:2016-09-20

    申请号:US13730675

    申请日:2012-12-28

    申请人: EMCCorporation

    IPC分类号: G06F17/30

    CPC分类号: G06F17/30156

    摘要: A method is used in managing data deduplication in storage systems. A data deduplication process is performed by applying a deduplicating technique to data of a deduplication domain. The data deduplication process is scheduled based on a priority. Characteristics of data deduplication performed by the data deduplication process are evaluated. Based on the evaluation, execution of the data deduplication process is effected.

    摘要翻译: 一种方法用于管理存储系统中的重复数据删除。 通过将重复数据删除技术应用于重复数据删除领域的数据来执行重复数据删除过程。 基于优先级调度重复数据删除过程。 评估由重复数据删除过程执行的重复数据删除的特性。 基于评估,执行重复数据消除处理。

    Managing storage device rebuild in data storage systems
    63.
    发明授权
    Managing storage device rebuild in data storage systems 有权
    管理数据存储系统中的存储设备重建

    公开(公告)号:US09448735B1

    公开(公告)日:2016-09-20

    申请号:US14145125

    申请日:2013-12-31

    申请人: EMC Corporation

    摘要: A technique for managing storage device rebuild in a data storage system is disclosed. A RAID group having multiple drives with unique identifiers is provided. A drive in the RAID group that becomes inactive is identified and a timer is activated. A persistent bitmap is maintained, wherein the bitmap includes a plurality of bits and each bit indicates whether a corresponding portion of the identified drive has changed as a result of an I/O request issued while the drive is identified as inactive. If the inactive drive is subsequently identified as active before the timer expires, the timer is stopped and a rebuild procedure initiated, wherein only portions of the identified drive corresponding to bits in the bitmap are rebuilt. The bitmap is cleared and the RAID group is marked as healthy. If the timer expires before the identified drive become active, a full rebuild procedure is initiated.

    摘要翻译: 公开了一种在数据存储系统中管理存储设备重建的技术。 提供了具有唯一标识符的多个驱动器的RAID组。 识别出无效的RAID组中的驱动器,并激活定时器。 维持持续位图,其中位图包括多个位,并且每个位指示当驱动器被识别为不活动时,作为I / O请求的结果,所识别的驱动器的相应部分是否已经改变。 如果在定时器到期之前随后将非活动驱动器识别为活动的,则定时器停止并且重建过程被启动,其中仅重新构建与位图中的位对应的所识别的驱动器的部分。 位图被清除,RAID组被标记为健康状态。 如果定时器在识别的驱动器变为活动状态之前到期,则会启动完整的重建过程。

    Method and apparatus for problem analysis using a causal map
    64.
    发明授权
    Method and apparatus for problem analysis using a causal map 有权
    使用因果图进行问题分析的方法和装置

    公开(公告)号:US09443196B1

    公开(公告)日:2016-09-13

    申请号:US14041317

    申请日:2013-09-30

    申请人: EMC Corporation

    IPC分类号: G06N5/04

    摘要: Example embodiments of the present invention provide a method and an apparatus for problem analysis using a causal map. The method includes building a problem domain corresponding to a datacenter management problem and building a causal map corresponding to the problem domain. A causal event of the datacenter management problem then may be inferred according to the causal map.

    摘要翻译: 本发明的示例性实施例提供了使用因果映射的问题分析的方法和装置。 该方法包括构建对应于数据中心管理问题的问题域并构建与问题域对应的因果映射。 因此,可以根据因果映射推断数据中心管理问题的因果事件。

    Parallel checksumming of data chunks of a shared data object using a log-structured file system
    65.
    发明授权
    Parallel checksumming of data chunks of a shared data object using a log-structured file system 有权
    使用日志结构文件系统对共享数据对象的数据块进行并行校验和

    公开(公告)号:US09436722B1

    公开(公告)日:2016-09-06

    申请号:US13799264

    申请日:2013-03-13

    申请人: EMC Corporation

    IPC分类号: G06F17/30

    摘要: Checksum values are generated and used to verify the data integrity. A client executing in a parallel computing system stores a data chunk to a shared data object on a storage node in the parallel computing system. The client determines a checksum value for the data chunk; and provides the checksum value with the data chunk to the storage node that stores the shared object. The data chunk can be stored on the storage node with the corresponding checksum value as part of the shared object. The storage node may be part of a Parallel Log-Structured File System (PLFS), and the client may comprise, for example, a Log-Structured File System client on a compute node or burst buffer. The checksum value can be evaluated when the data chunk is read from the storage node to verify the integrity of the data that is read.

    摘要翻译: 生成校验和值并用于验证数据完整性。 在并行计算系统中执行的客户机将数据块存储在并行计算系统中的存储节点上的共享数据对象。 客户端确定数据块的校验和值; 并将数据块的校验和值提供给存储共享对象的存储节点。 数据块可以存储在存储节点上,其中相应的校验和值作为共享对象的一部分。 存储节点可以是并行日志结构化文件系统(PLFS)的一部分,并且客户端可以包括例如计算节点或突发缓冲器上的日志结构化文件系统客户端。 当从存储节点读取数据块以验证读取的数据的完整性时,可以评估校验和值。

    Subject notification and consent for captured images
    66.
    发明授权
    Subject notification and consent for captured images 有权
    拍摄图像的主题通知和同意

    公开(公告)号:US09430673B1

    公开(公告)日:2016-08-30

    申请号:US14585810

    申请日:2014-12-30

    申请人: EMC Corporation

    摘要: A processing device in one embodiment comprises a processor coupled to a memory and is configured to detect at least one subject in a captured image, to provide a notification to the subject regarding the captured image, and to permit the subject to consent to a particular use of the captured image by another party. The providing of the notification is controlled based on at least one of a notification threshold and an automatic consent condition. Additionally or alternatively, at least portions of the captured image are provided to the subject for review only under certain conditions, such as upon receipt of a verification that a subject device associated with the subject was sufficiently near a location at which the image was captured at a time at which the image was captured, or responsive to a result of a comparison of the captured image to known information characterizing the subject.

    摘要翻译: 在一个实施例中的处理装置包括耦合到存储器的处理器,并且被配置为检测拍摄图像中的至少一个被摄体,向被摄体提供关于所捕获的图像的通知,并允许受试者同意使用特定的使用 被另一方捕获的图像。 基于通知阈值和自动同意条件中的至少一个来控​​制通知的提供。 附加地或替代地,所捕获的图像的至少一部分被提供给受试者,以在特定条件下进行审查,例如在接收到与被摄体相关联的对象设备足够靠近图像被捕获的位置的验证时 捕获图像的时间,或响应于捕获的图像与表征对象的已知信息的比较的结果。

    Split tokenization
    67.
    发明授权
    Split tokenization 有权
    拆分标记化

    公开(公告)号:US09430655B1

    公开(公告)日:2016-08-30

    申请号:US13729155

    申请日:2012-12-28

    申请人: EMC Corporation

    IPC分类号: G06F21/60 H04L9/08 G06Q20/38

    摘要: An improved technique involves providing protection of secrets by splitting the secret into secret shares and providing tokens for each secret share. Along these lines, a terminal splits a secret such as a credit card number into shares. The terminal then transmits each share to a separate and distinct token server. Each token server, upon receiving a secret share, generates a corresponding token and sends that token to an application server. In some cases, when a user at the application server requires access to the secret, the application server sends each token to the token server form which the token was generated. The token servers each send, in return, a secret share to the application server. The application server combines the secret shares to recover the secret.

    摘要翻译: 改进的技术涉及通过将秘密分成秘密股份并为每个秘密股份提供令牌来提供秘密保护。 沿着这些线路,终端将诸如信用卡号码的秘密分成股份。 终端然后将每个共享发送到单独的和不同的令牌服务器。 每个令牌服务器在接收到秘密共享后,生成相应的令牌,并将该令牌发送到应用程序服务器。 在某些情况下,当应用服务器上的用户需要访问该秘密时,应用服务器将每个令牌发送到生成令牌的令牌服务器表单。 令牌服务器每个都发送秘密共享给应用程序服务器。 应用服务器组合秘密共享以恢复秘密。

    Sequential read request management in data storage system environment
    69.
    发明授权
    Sequential read request management in data storage system environment 有权
    数据存储系统环境中的顺序读请求管理

    公开(公告)号:US09430167B1

    公开(公告)日:2016-08-30

    申请号:US13908083

    申请日:2013-06-03

    申请人: EMC Corporation

    IPC分类号: G06F12/00 G06F3/06

    摘要: A host-based memory is maintained for a host computing device. Data obtained from a storage array in response to one or more read requests is stored in the host-based memory. The storage array includes an array-based memory and is configured to perform one or more data pre-fetch operations. The host computing device monitors for the occurrence of a set of sequential read requests. The set of sequential read requests is sent from the host computing device to the storage array when one or more read requests of the set of sequential read requests match data stored in the host-based memory. Thus, the storage array is enabled to perform one or more data pre-fetch operations in accordance with the array-based memory and the set of sequential read requests.

    摘要翻译: 为主机计算设备维护基于主机的内存。 响应于一个或多个读取请求从存储阵列获得的数据被存储在基于主机的存储器中。 存储阵列包括基于阵列的存储器并被配置为执行一个或多个数据预取操作。 主机计算设备监视一组顺序读请求的发生。 当一组顺序读取请求的一个或多个读取请求与存储在基于主机的存储器中存储的数据匹配时,该组顺序读取请求从主机计算设备发送到存储阵列。 因此,存储阵列能够根据基于阵列的存储器和顺序读取请求的集合执行一个或多个数据预取操作。

    Fast-flux detection utilizing domain name system information
    70.
    发明授权
    Fast-flux detection utilizing domain name system information 有权
    利用域名系统信息进行快速通量检测

    公开(公告)号:US09426168B1

    公开(公告)日:2016-08-23

    申请号:US14471540

    申请日:2014-08-28

    申请人: EMC Corporation

    摘要: A processing device comprises a processor coupled to a memory and is configured to determine a first set of features from domain name system (DNS) information, the first set of features being defined over a domain, and to determine a second set of features from the DNS information, the second set of features being defined over internet protocol (IP) addresses returned for the domain. The processing device is further configured to compute a fast-flux score based on the first and second sets of features, and to utilize the fast-flux score to characterize fast-flux activity relating to the domain. For example, the processing device can be configured to compare the fast-flux score to a threshold, and to generate an indicator of the presence or absence of fast-flux activity based on a result of the comparison. The processing device may be implemented in a computer network or network security system.

    摘要翻译: 处理设备包括处理器,其耦合到存储器并且被配置为从域名系统(DNS)信息确定第一组特征,所述第一组特征是通过域定义的,并且从所述第一组特征确定来自 DNS信息,第二组功能是通过为域返回的互联网协议(IP)地址定义的。 处理装置还被配置为基于第一和第二特征集来计算快速通量分数,并且利用快速通量分数来表征与该域相关的快速通量活动。 例如,处理装置可以被配置为将快速通量分数与阈值进行比较,并且基于比较的结果生成快速通量活动的存在或不存在的指标。 处理设备可以在计算机网络或网络安全系统中实现。