公开(公告)号：US20140351225A1

公开(公告)日：2014-11-27

申请号：US14456732

申请日：2014-08-11

Applicant: Microsoft Corporation

Inventor： Clyde Law ,  Paul Adrian Oltean ,  Ran Kalach ,  Nir Ben-Zvi ,  Matthias H. Wollnik

IPC: G06F17/30

CPC classification number: G06F17/30115 ,  G06F17/30598

Abstract: Described is caching classification-related metadata for a file in an alternate data stream of that file. When a file is classified (e.g., for data management), the classification properties are cached in association with the file, along with classification-related metadata that indicates the state of the file at the time of caching. The classification-related metadata in the alternate data stream is then useable in determining whether the classification properties are valid and up-to-date when next accessed, or whether the file needs to be reclassified. If the properties are valid and up-to-date, they may be used without requiring the computationally costly steps of reclassification. Also described is using more than one alternate data stream for the cache, and extending the classification-related metadata through a defined extension mechanism.

Abstract translation: 描述了该文件的备用数据流中文件的缓存分类相关元数据。 当文件被分类（例如，用于数据管理）时，分类属性与文件相关联地缓存，以及指示缓存时文件状态的分类相关元数据。 备用数据流中的分类相关元数据可用于确定下次访问时分类属性是否有效和最新，还是文件是否需要重新分类。 如果属性是有效和最新的，则可以使用它们，而不需要重新分类的计算上昂贵的步骤。 还描述了为缓存使用多于一个备用数据流，并通过定义的扩展机制来扩展与分类有关的元数据。

公开(公告)号：US20140244601A1

公开(公告)日：2014-08-28

申请号：US13781585

申请日：2013-02-28

Applicant: MICROSOFT CORPORATION

Inventor： Ping Xie ,  Chun Ho Cheung ,  Kashif Hasan ,  Abhishek Gupta ,  Ran Kalach ,  Daniel Hefenbrock

IPC: G06F17/30

CPC classification number: G06F17/30117 ,  G06F17/30156

Abstract: The subject disclosure is directed towards partially recalling file ranges of deduplicated files based on tracking dirty (write modified) ranges (user writes) in a way that eliminates or minimizes reading and writing already-optimized adjacent data. The granularity of the ranges does not depend on any file-system granularity for tracking ranges. In one aspect, lazy flushing of tracking data that preserves data-integrity and crash-consistency is provided. In one aspect, also described is supporting granular partial recall on an open file while a data deduplication system is optimizing that file.

Abstract translation: 主题公开旨在基于消除或最小化已经优化的相邻数据的读取和写入的方式基于跟踪脏（写修改）范围（用户写入）来部分地调用重复数据删除的文件的文件范围。 范围的粒度不依赖于跟踪范围的任何文件系统粒度。 在一方面，提供了保持数据完整性和崩溃一致性的跟踪数据的延迟刷新。 在一个方面，还描述了在重新数据删除系统优化该文件的同时，在打开的文件上支持粒度部分调用。

公开(公告)号：US20140189348A1

公开(公告)日：2014-07-03

申请号：US13731746

申请日：2012-12-31

Applicant: MICROSOFT CORPORATION

Inventor： Ahmed Moustafa El-Shimi ,  Paul Adrian Oltean ,  Ran Kalach ,  Sudipta Sengupta ,  Jin Li ,  Roy D'Souza ,  Omkant Pandey ,  Ramarathnam Venkatesan

IPC: G06F21/62

CPC classification number: G06F21/6218 ,  G06F2221/2107 ,  H04L63/0428

Abstract: The subject disclosure is directed towards encryption and deduplication integration between computing devices and a network resource. Files are partitioned into data blocks and deduplicated via removal of duplicate data blocks. Using multiple cryptographic keys, each data block is encrypted and stored at the network resource but can only be decrypted by an authorized user, such as domain entity having an appropriate deduplication domain-based cryptographic key. Another cryptographic key referred to as a content-derived cryptographic key ensures that duplicate data blocks encrypt to substantially equivalent encrypted data.

Abstract translation: 主题公开涉及计算设备和网络资源之间的加密和重复数据删除集成。 文件被分割成数据块，并通过删除重复的数据块进行重复数据删除。 使用多个加密密钥，每个数据块被加密并存储在网络资源中，但是只能由授权用户（例如具有适当的基于重复数据删除域的加密密钥的域实体）解密。 被称为内容导出加密密钥的另一密码密钥确保重复的数据块加密到基本相等的加密数据。

公开(公告)号：US10180943B2

公开(公告)日：2019-01-15

申请号：US13781585

申请日：2013-02-28

Applicant: Microsoft Corporation

Inventor： Ping Xie ,  Chun Ho Cheung ,  Kashif Hasan ,  Abhishek Gupta ,  Ran Kalach ,  Daniel Hefenbrock

IPC: G06F17/30

Abstract: The subject disclosure is directed towards partially recalling file ranges of deduplicated files based on tracking dirty (write modified) ranges (user writes) in a way that eliminates or minimizes reading and writing already-optimized adjacent data. The granularity of the ranges does not depend on any file-system granularity for tracking ranges. In one aspect, lazy flushing of tracking data that preserves data-integrity and crash-consistency is provided. In one aspect, also described is supporting granular partial recall on an open file while a data deduplication system is optimizing that file.

公开(公告)号：US09152502B2

公开(公告)日：2015-10-06

申请号：US13724464

申请日：2012-12-21

Applicant: Microsoft Corporation

Inventor： Ran Kalach ,  Kashif Hasan ,  Paul Adrian Oltean ,  James R. Benton ,  Chun Ho Cheung ,  Ahmed Moustafa El-Shimi

IPC: G06F11/14

CPC classification number: G06F11/1435 ,  G06F11/1402 ,  G06F11/1415 ,  G06F2201/83

Abstract: The subject disclosure is directed towards a data storage service that uses hash values, such as substantially collision-free hash values, to maintain data integrity. These hash values are persisted in the form of mappings corresponding to data blocks in one or more data stores. If a data error is detected, these mappings allow the data storage service to search the one or more data stores for data blocks having matching hash values. If a data block is found that corresponds to a hash value for a corrupted or lost data block, the data storage service uses that data block to repair the corrupted or lost data block.

Abstract translation: 主题公开涉及使用诸如基本上无冲突的哈希值之类的散列值来维持数据完整性的数据存储服务。 这些哈希值以对应于一个或多个数据存储中的数据块的映射的形式保持。 如果检测到数据错误，这些映射允许数据存储服务搜索具有匹配散列值的数据块的一个或多个数据存储。 如果找到对应于损坏或丢失的数据块的哈希值的数据块，则数据存储服务使用该数据块来修复已损坏或丢失的数据块。

公开(公告)号：US20140181575A1

公开(公告)日：2014-06-26

申请号：US13724464

申请日：2012-12-21

Applicant: MICROSOFT CORPORATION

Inventor： Ran Kalach ,  Kashif Hasan ,  Paul Adrian Oltean ,  James R. Benton ,  Chun Ho Cheung ,  Ahmed Moustafa El-Shimi

IPC: G06F11/14

CPC classification number: G06F11/1435 ,  G06F11/1402 ,  G06F11/1415 ,  G06F2201/83

Abstract: The subject disclosure is directed towards a data storage service that uses hash values, such as substantially collision-free hash values, to maintain data integrity. These hash values are persisted in the form of mappings corresponding to data blocks in one or more data stores. If a data error is detected, these mappings allow the data storage service to search the one or more data stores for data blocks having matching hash values. If a data block is found that corresponds to a hash value for a corrupted or lost data block, the data storage service uses that data block to repair the corrupted or lost data block.

Abstract translation: 主题公开涉及使用诸如基本上无冲突的哈希值之类的散列值来维持数据完整性的数据存储服务。 这些哈希值以对应于一个或多个数据存储中的数据块的映射的形式保持。 如果检测到数据错误，这些映射允许数据存储服务搜索具有匹配散列值的数据块的一个或多个数据存储。 如果找到对应于损坏或丢失的数据块的哈希值的数据块，则数据存储服务使用该数据块来修复已损坏或丢失的数据块。

公开(公告)号：US20130085994A1

公开(公告)日：2013-04-04

申请号：US13685566

申请日：2012-11-26

Applicant: Microsoft Corporation

Inventor： Michael L. Michael ,  William L. Scheidel ,  Paul Brandon Luber ,  Paul Adrian Oltean ,  Ran Kalach

IPC: G06F17/30

CPC classification number: G06F17/30088 ,  G06F9/45504 ,  G06F11/1458 ,  G06F11/1464 ,  G06F11/1466 ,  G06F2201/815 ,  G06F2201/82 ,  G06F2201/84

Abstract: A host server hosting one or more virtual machines can back up host volumes and the one or more virtual machines installed thereon in an application-consistent manner. In one implementation, a host-level requestor instructs a host-level writer to identify which virtual machines qualify for application-consistent backups. The host-level requestor then instructs the host-level writer to initiate virtual machine backups through guest-level requesters in each appropriately-configured virtual machine, wherein the virtual machines create application-consistent backups within the virtual machine volumes. The host-level requester then initiates snapshots of the server volumes on the host-level. The virtual machine-level snapshots can thus be retrieved from within the host-level snapshots of the server volumes.

Abstract translation: 托管一个或多个虚拟机的主机服务器可以以应用程序一致的方式备份主机卷和安装在其上的一个或多个虚拟机。 在一个实现中，主机级请求者指示主机级写入器识别哪些虚拟机具有符合应用程序一致性备份的资格。 主机级请求者然后指示主机级写入器通过每个适当配置的虚拟机中的访客级请求者启动虚拟机备份，其中虚拟机在虚拟机卷内创建应用程序一致的备份。 主机级请求者然后在主机级别启动服务器卷的快照。 因此，可以从服务器卷的主机级快照中检索虚拟机级快照。