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    • 5. 发明申请
    • OBJECT-LEVEL IDENTIFICATION OF DUPLICATE DATA IN A STORAGE SYSTEM
    • 存储系统中双重数据的对象级别标识
    • WO2012173859A2
    • 2012-12-20
    • PCT/US2012/041301
    • 2012-06-07
    • NETAPP, INC.YASA, Giridhar Appaji NagCHANDRASEKARASASTRY, Nagesh Panyam
    • YASA, Giridhar Appaji NagCHANDRASEKARASASTRY, Nagesh Panyam
    • G06F12/00G06F11/00G06F15/16
    • G06F17/30156
    • The technique introduced here includes a system and method for identification of duplicate data directly at a data-object level. The technique illustratively utilizes a hierarchical tree of fingerprints for each data object to compare data objects and identify duplicate data blocks referenced by the data objects. The hierarchical fingerprint trees are constructed in such a manner that a top-level fingerprint (or object-level fingerprint) of the hierarchical tree is representative of all data blocks referenced by a storage system. In embodiments, inline techniques are utilized to generate hierarchical fingerprints for new data objects as they are created, and an object-level fingerprint of the new data object is compared against preexisting object-level fingerprints in the storage system to identify exact or close matches. While exact matches result in complete deduplication of data blocks referenced by the data object, hierarchical comparison methods are used for identifying and mapping duplicate data blocks referenced by closely related data objects.
    • 这里介绍的技术包括直接在数据对象层面识别重复数据的系统和方法。 该技术说明性地利用每个数据对象的指纹分层树来比较数据对象并识别由数据对象引用的重复数据块。 层次化指纹树以这样一种方式构成,使得层次树的顶级指纹(或对象级指纹)代表由存储系统引用的所有数据块。 在实施例中,在创建新数据对象时,使用内联技术来生成新数据对象的分层指纹,并将新数据对象的对象级指纹与存储系统中的预先存在的对象级指纹进行比较,以识别精确或近似的匹配。 虽然精确匹配导致数据对象引用的数据块的完全重复数据删除,但层次比较方法用于识别和映射由紧密相关的数据对象引用的重复数据块。
    • 9. 发明申请
    • TERRAIN PAGING DURING A DISTRIBUTED SIMULATION INVOLVING MULTIPLE OBJECTS
    • 涉及多个对象的分布式仿真期间的TERRAIN PAG
    • WO2009151532A2
    • 2009-12-17
    • PCT/US2009/003100
    • 2009-05-19
    • FORTERRA SYSTEMS, INC.WATTE, Jon, E.
    • WATTE, Jon, E.
    • G06F15/16G06T17/50G06F9/455G06F9/44
    • A63F13/12A63F13/358A63F2300/513A63F2300/534A63F2300/5533
    • A technique is described for managing loading of terrain data into working memory of a computer during a distributed simulation, in which multiple computer systems operated by multiple users participate, where the simulation involves multiple user-controlled objects simulated with a terrain database that is too large to fit in working memory of the computer system. The technique includes calculating an area of interest around each of the objects to be simulated, and then simulating the objects by loading into working memory the terrain pages of the terrain database that overlap with at least one of the areas of interest, and generally not loading into working memory terrain pages of the terrain database that do not overlap with at least one of the areas of interest. As such, at any given time, any given server can have loaded in working memory fewer than all of the pages of the terrain database.
    • 描述了一种技术,用于在分布式仿真期间管理将地形数据加载到计算机的工作存储器中,其中由多个用户操作的多个计算机系统参与其中,其中模拟涉及用太大的地形数据库模拟的多个用户控制的对象 以适应计算机系统的工作记忆。 该技术包括计算要被模拟的每个物体周围的感兴趣区域,然后通过将工作存储器中的地形数据库的地形页面与至少一个感兴趣的区域重叠并且通常不加载来模拟对象 到达地形数据库的工作记忆地形页面,其不与至少一个感兴趣的区域重叠。 因此,在任何给定的时间,任何给定的服务器可以在工作内存中加载少于地形数据库的所有页面。
    • 10. 发明申请
    • MAINTAINING CHECKPOINTS DURING BACKUP OF LIVE SYSTEM
    • 在实时系统备份期间维护检查
    • WO2009134932A2
    • 2009-11-05
    • PCT/US2009/042175
    • 2009-04-29
    • NETAPP, INC.NAGARAJ, Prasad
    • NAGARAJ, Prasad
    • G06F15/16G06F11/07G06F11/16
    • G06F11/1443G06F11/1464
    • Techniques introduced here support block level transmission of a logical container from a network storage controller to a backup system. In accordance with the techniques, transmission can be restarted using checkpoints created at the block level by allowing restarts from various points within a logical container, for example a point at which 10%, 50%, or 75% of the logical container had been transmitted. The transmission can be restarted while maintaining data consistency of the logical container data and included meta-data. Advantageously, changes made prior to a checkpoint restart to, for example, meta-data, do not lead to inconsistent logical container backups.
    • 这里介绍的技术支持逻辑容器从网络存储控制器到备份系统的块级传输。 根据这些技术,可以使用通过允许从逻辑容器内的各个点重新启动的块级创建的检查点来重新启动传输,例如逻辑容器的10%,50%或75%的传输点 。 可以在保持逻辑容器数据和包含的元数据的数据一致性的同时重新启动传输。 有利的是,在检查点重新启动之前进行的更改例如是元数据,不会导致不一致的逻辑容器备份。