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    • 1. 发明授权
    • System and method of hierarchical space management for storage systems
    • 存储系统分级空间管理系统和方法
    • US08495111B1
    • 2013-07-23
    • US12236194
    • 2008-09-23
    • Feng WangJohn A. ColgroveBo HongOleg Kiselev
    • Feng WangJohn A. ColgroveBo HongOleg Kiselev
    • G06F17/30
    • G06F3/0604G06F3/0619G06F3/0631G06F3/0644G06F3/0683G06F11/0727G06F11/0793
    • A system and method for storing data. In one embodiment, a storage system includes a resource manager and a hierarchical entry tree describing storage entities of the storage system. At each given level of the tree higher than the bottom level, metadata entries summarize storage availability at a level below the given level. The resource manager receives a request to store data of a target size at a target location corresponding to a first portion of the entry tree and scans the entry tree to determine if contiguous, free storage entities of the target size are available at the target location. In response to determining that contiguous, free storage entities of the target size are not available at the target location, the resource manager scans portions of the entry tree outside the first portion to identify contiguous, free storage entities of the target size, where it stores the data.
    • 一种用于存储数据的系统和方法。 在一个实施例中,存储系统包括描述存储系统的存储实体的资源管理器和分层条目树。 在高于底层的树的每个给定级别,元数据条目将存储可用性总结在低于给定级别的级别。 资源管理器接收在对应于条目树的第一部分的目标位置处存储目标大小的数据的请求,并扫描条目树,以确定目标大小的连续的空闲存储实体是否在目标位置可用。 响应于确定目标大小的连续的空闲存储实体在目标位置不可用,资源管理器扫描第一部分之外的条目树的部分,以识别目标大小的连续的空闲存储实体,其中存储 数据。
    • 2. 发明授权
    • File change log
    • 文件更改日志
    • US07890469B1
    • 2011-02-15
    • US10334101
    • 2002-12-30
    • Joseph M. MaionchiJohn A. ColgroveCraig K. Harmer
    • Joseph M. MaionchiJohn A. ColgroveCraig K. Harmer
    • G06F7/00G06F17/00G06F12/00G06F17/30
    • G06F17/30067
    • A method, system, and computer program product are provided to update file change log data to indicate that a change to a file in a file system has occurred. The file change log data are accessible for read access using a file system-independent operating system function. Applications can read, open, close, and seek data in the file change log using file system-independent operating system functions. The file change log data can be read by multiple applications simultaneously, even when data are being written to the file change log. Operations such as writing data to the file change log and renaming or deleting the file change log file itself are prevented when performed by an application rather than the file system. These prohibitions protect the file change log.
    • 提供了一种方法,系统和计算机程序产品来更新文件更改日志数据,以指示文件系统中文件的更改已经发生。 使用独立于文件系统的操作系统功能可以访问文件更改日志数据以进行读取访问。 应用程序可以使用文件系统独立的操作系统功能读取,打开,关闭和查找文件更改日志中的数据。 即使将数据写入文件更改日志,文件更改日志数据也可以同时被多个应用程序读取。 在由应用程序而不是文件系统执行时,会阻止将文件写入文件更改日志和重命名或删除文件更改日志文件本身的操作。 这些禁止保护文件更改日志。
    • 4. 发明授权
    • Coordinated storage management operations in replication environment
    • 复制环境中的协调存储管理操作
    • US07421554B2
    • 2008-09-02
    • US11589334
    • 2006-10-30
    • John A. ColgroveRonald S. KarrOleg Kiselev
    • John A. ColgroveRonald S. KarrOleg Kiselev
    • G06F12/00
    • G06F11/2064G06F11/1471G06F11/2071G06F2201/82G06F2201/84Y10S707/99953Y10S707/99955
    • A method, system, computer system, and computer-readable medium for maintaining up-to-date, consistent copies of primary data without the need to replicate modified data when the data were modified as a result of an operation that is not an application-driven write operation captured during replication. Selected storage management operations are performed on the primary and secondary data stores at points in time when the data are the same to ensure that the data stored within the data stores remain consistent. These selected storage management operations include operations that produce modified data stored in the primary data store, where a portion of the modified data are not replicated to a secondary node. Other types of storage management operations are selected to be performed on both the primary and secondary data stores, where the operations do not directly change data in the primary data store, but may affect data stored in the primary data store.
    • 一种方法,系统,计算机系统和计算机可读介质,用于在数据作为不是应用程序的操作的结果被修改时,维护主数据的最新,一致的副本,而不需要复制修改的数据。 复制期间捕获的驱动写入操作。 所选择的存储管理操作在数据相同的时间点在主数据存储和次数据存储器上执行,以确保存储在数据存储器中的数据保持一致。 这些选择的存储管理操作包括产生存储在主数据存储中的修改数据的操作,其中修改的数据的一部分不被复制到辅助节点。 其他类型的存储管理操作被选择在主数据存储和辅助数据存储器上执行,其中操作不直接改变主数据存储器中的数据,而是可能影响存储在主数据存储器中的数据。
    • 5. 发明授权
    • Method and apparatus for synchronizing redundant data with a volume
    • 用于使冗余数据与卷同步的方法和装置
    • US07313724B1
    • 2007-12-25
    • US10882631
    • 2004-07-01
    • Anand A. KekreJohn A. ColgroveOleg KiselevRonald S. Karr
    • Anand A. KekreJohn A. ColgroveOleg KiselevRonald S. Karr
    • G06F11/00
    • G06F11/2082G06F11/1451G06F11/2071
    • Various embodiments of systems and methods are disclosed for initially synchronizing redundant data (e.g., a mirror, a replica, or a set of parity information) with an original volume. State information identifies which regions of the original volume are currently valid, and only valid regions of the original volume are used to generate the values of the redundant data during the initial synchronization. For example, if the redundant data is a set of parity information, synchronizing the redundant data involves calculating one or more parity values based on the valid regions of the volume. If the redundant data is a duplicate copy (e.g., a mirror or replica) of the volume, synchronizing the redundant data involves copying the valid regions of the volume to the duplicate copy of the volume. If the original volume includes any invalid regions, unnecessary copying and/or processing for those regions can be avoided during the initial synchronization.
    • 公开了用于使冗余数据(例如,镜像,副本或一组奇偶校验信息)与原始卷同步的系统和方法的各种实施例。 状态信息确定原始卷的哪些区域当前是有效的,并且只有原始卷的有效区域用于在初始同步期间生成冗余数据的值。 例如,如果冗余数据是一组奇偶校验信息,则同步冗余数据涉及基于该体积的有效区域来计算一个或多个奇偶校验值。 如果冗余数据是卷的重复副本(例如,镜像或副本),则同步冗余数据涉及将卷的有效区域复制到卷的副本。 如果原始卷包括任何无效区域,则可以在初始同步期间避免对这些区域的不必要的复制和/或处理。
    • 8. 发明授权
    • Method for creating a virtual data copy of a volume being restored
    • 创建要还原的卷的虚拟数据副本的方法
    • US06978354B1
    • 2005-12-20
    • US10327536
    • 2002-12-20
    • Anand A. KekreJohn A. ColgroveOleg Kiselev
    • Anand A. KekreJohn A. ColgroveOleg Kiselev
    • G06F12/00
    • G06F11/1469Y10S707/99953Y10S707/99955
    • In one embodiment of the method, first and second data volumes are created. Thereafter, a first data portion of the first data volume is overwritten with a first data portion of the second data volume. A second data portion of the first data volume is overwritten with a second data portion of the second data volume. In one embodiment, the first and second data portions of the first data volume are overwritten with the first and second data portions of the second data volume, respectively, in response to a command to restore or synchronize the data contents of the first data volume to the data contents of the second data volume. A virtual point-in-time (PIT) copy of the first data volume is created after overwriting the first data portion but before overwriting the second data portion.
    • 在该方法的一个实施例中,创建第一和第二数据卷。 此后,第一数据卷的第一数据部分被第二数据卷的第一数据部分重写。 第一数据卷的第二数据部分被第二数据卷的第二数据部分覆盖。 在一个实施例中,响应于恢复或同步第一数据卷的数据内容的命令,第一数据卷的第一和第二数据部分分别被第二数据卷的第一和第二数据部分覆盖, 第二数据量的数据内容。 在重写第一数据部分之后但在重写第二数据部分之前创建第一数据卷的虚拟时间点(PIT)副本。