公开(公告)号：EP1093055A2

公开(公告)日：2001-04-18

申请号：EP00309068.5

申请日：2000-10-16

Applicant: Compaq Computer Corporation

Inventor： Mosher, Malcolm ,  Whitworth. P., Simon

IPC: G06F11/14

CPC classification number: G06F11/2097 ,  G06F11/1471 ,  G06F11/1662 ,  G06F11/2066 ,  G06F11/2069 ,  G06F11/2074 ,  G06F11/2082 ,  G06F11/2089 ,  G06F11/2094 ,  G06F2201/855 ,  Y10S707/99953 ,  Y10S707/99955

Abstract: A primary computer system has a database, application programs that modify the local database, and a transaction manager that stores audit records in a local image trail reflecting those application program modifications to the local database. In a remote backup system, a Receiver process receives audit records from the primary system. The audit records include audit update and audit backout records indicating database updates and database backouts generated by transactions executing on the primary system. The Receiver stores the audit update and audit backout records in one or more image trails. For each image trail there is an Updater process that applies to a backup database volume the database updates and backouts indicated by the audit update and audit backout records in the image trail. The remote backup system periodically executes a file purge procedure, which identifies the oldest transaction table from among the transaction tables in the last image trail file accessed for each of the image trails. Then, for each image trail, the file purge procedure accesses the image trial files in a predefined chronological order and for each accessed image trail file it compares a first set of newest transaction identifiers in the file's transaction table with a second set of oldest transaction identifiers in the identified oldest transaction table. The procedure purges the accessed image trail file only when all of the transaction identifiers in the first set are older than corresponding transaction identifiers in the second set.

Abstract translation: 的主计算机系统有一个数据库，应用程序做了修改本地数据库，事务管理器在本地易扑反映这些应用程序修改本地数据库中没有存储的审计记录。 在远程备份系统中，接收机处理从主系统接收审核记录。审计记录包括审计更新和审计退出记录指示由主系统上执行的事务生成的数据库的更新和数据库重新出局，接收机存储该审计更新和审计 退出记录在一个或多个图像路径。 对于每一个图像线索有一个更新processthat适用于备份数据库卷数据库更新，并在图像跟踪审计更新和审计退出记录显示回奏。 远程备份系统周期性地执行一文件清洗过程，该过程从访问的针对每个图像的小径在负载易扑文件事务表中识别最旧的事务表。 然后，对于每个图像线索，文件吹扫程序访问在一个预定义的时间顺序和每个访问的易扑文件它比较第一组最新事务标识符的在文件的交易表与第二组最古老的事务标识符的图像审判文件 确定了最古老的交易表。 该程序清除被访问的易扑FILESONLY当所有第一组的事务标识符比在第二组对应的事务标识符老。

公开(公告)号：EP2948849B1

公开(公告)日：2018-03-14

申请号：EP14707336.5

申请日：2014-01-28

Applicant: 1&1 Internet AG

Inventor： SCHÖBEL-THEUER, Thomas

IPC: G06F11/20

CPC classification number: G06F3/0604 ,  G06F3/065 ,  G06F3/0683 ,  G06F11/2074 ,  G06F2201/855

Abstract: A system for replicating data comprising includes a first and a second computing device. The first computing device has a first storage unit configured to store block level data, a second storage unit and a volatile memory. The second computing device has a third storage unit and a fourth storage unit configured to store block level data, the third storage unit being communicatively coupled to the second storage unit. The first computing device is configured to receive write requests each containing payload data, write the payload data of the write requests to the volatile memory and append the payload data to the second storage unit, and acknowledge the write requests prior to writing the respective payload data to the second storage unit. The second computing device is configured to detect new data in the third storage unit and apply the new data to the fourth storage unit.

公开(公告)号：EP3019960A4

公开(公告)日：2017-03-01

申请号：EP14823874

申请日：2014-07-08

Applicant: EXABLOX CORP

Inventor： HUNT TAD ,  HOWE JOHN

IPC: G06F11/20 ,  G06F11/14

CPC classification number: G06F17/30174 ,  G06F11/1443 ,  G06F11/2023 ,  G06F11/2064 ,  G06F11/2079 ,  G06F11/2094 ,  G06F11/2097 ,  G06F17/30575 ,  G06F2201/855 ,  H04L67/1095

Abstract: Computer-implemented methods and systems for replication of data between mirrored data sites are provided. An exemplary method may comprise receiving a data object at a mirrored data site, the mirrored data site including one or more data nodes. The data objects are replicated to the one or more data nodes internally. Then, a data object reference associated with the data object is generated. The reference referring to the data object is queued for transmission to all other mirrored data sites. The data object reference associated with the data object is transmitted to the other mirrored data sites. When the data object is received at each mirrored data site, it is replicated to one or more data nodes within the site. After transmitting the data object, the data object reference is discarded.

Abstract translation: 提供了用于在镜像数据站点之间复制数据的计算机实现的方法和系统。 示例性方法可以包括在镜像数据站点处接收数据对象，镜像数据站点包括一个或多个数据节点。 数据对象在内部复制到一个或多个数据节点。 然后，生成与数据对象相关联的数据对象引用。 参考数据对象的引用被排队等待传输到所有其他镜像数据站点。 与数据对象相关联的数据对象引用传输到其他镜像数据站点。 当在每个镜像数据站点接收数据对象时，将其复制到站点内的一个或多个数据节点。 发送数据对象后，丢弃数据对象引用。

公开(公告)号：EP2120147B1

公开(公告)日：2016-03-16

申请号：EP09010606.3

申请日：2004-04-16

Applicant: Hitachi, Ltd.

Inventor： Hirakawa, Yusuke ,  Arakawa, Hiroshi ,  Takeda, Takahiko ,  Sato, Takao

IPC: G06F11/20

CPC classification number: G06F11/2076 ,  G06F11/2058 ,  G06F11/2064 ,  G06F11/2069 ,  G06F11/2071 ,  G06F11/2074 ,  G06F11/2082 ,  G06F2201/855 ,  H04L67/1095 ,  Y10S707/99953

公开(公告)号：EP2715553B1

公开(公告)日：2016-02-24

申请号：EP12789199.2

申请日：2012-05-18

Applicant: Microsoft Technology Licensing, LLC

Inventor： CALDER, Bradley, Gene ,  NILAKANTAN, Niranjan ,  SRIVASTAV, Shashwat ,  WU, Jiesheng ,  ABBASI, Abdul, Rafay ,  MAINALI, Shane ,  UDDARAJU, Padmanabha, Chakravarthy

IPC: G06F11/20

CPC classification number: G06F17/30578 ,  G06F11/2074 ,  G06F11/2097 ,  G06F17/30241 ,  G06F17/30584 ,  G06F17/30589 ,  G06F2201/855

公开(公告)号：EP2715554B1

公开(公告)日：2016-02-03

申请号：EP12790115.5

申请日：2012-05-18

Applicant: Microsoft Technology Licensing, LLC

Inventor： CALDER, Bradley Gene ,  NILAKANTAN, Niranjan ,  SRIVASTAV, Shashwat ,  WU, Jiesheng ,  ABBASI, Abdul Rafay ,  MAINALI, Shane ,  UDDARAJU, Padmanabha Chakravarthy

IPC: G06F11/20

CPC classification number: G06F17/30581 ,  G06F11/2074 ,  G06F11/2076 ,  G06F17/30362 ,  G06F17/30377 ,  G06F17/30575 ,  G06F2201/855

Abstract: Embodiments of the present invention relate to synchronously replicating data in a distributed computing environment. To achieve synchronous replication both an eventual consistency approach and a strong consistency approach are contemplated. Received data may be written to a log of a primary data store for eventual committal. The data may then be annotated with a record, such as a unique identifier, which facilitates the replay of the data at a secondary data store. Upon receiving an acknowledgment that the secondary data store has written the data to a log, the primary data store may commit the data and communicate an acknowledgment of success back to the client. In a strong consistency approach, the primary data store may wait to send an acknowledgement of success to the client until it receives an acknowledgment that the secondary has not only written, but also committed, the data.

公开(公告)号：EP2423818B1

公开(公告)日：2016-01-13

申请号：EP10841823.7

申请日：2010-04-07

Applicant: Hitachi, Ltd.

Inventor： KONDO, Shuji ,  OKUMOTO, Katsuhiro

IPC: G06F11/20 ,  G06F11/14

CPC classification number: G06F11/1645 ,  G06F11/1456 ,  G06F11/2058 ,  G06F11/2074 ,  G06F11/2079 ,  G06F11/2082 ,  G06F2201/855

Abstract: If the first storage apparatus is suspended, it is determined which of the update number which the journal recently reflected in the second storage apparatus comprises and the update number which the journal recently reflected in the third storage apparatus comprises is the newer. It is determined, in the newer storage apparatus which is determined to comprise the newer update number, whether one or more differential journals from the journal comprising the update number next to the update number which is not determined to be the newer to the journal comprising the update number determined to be the newer exist or not. If the result of the determination is positive, from the newer storage apparatus to the previous storage apparatus which is not the newer of the second and the third storage apparatuses, one or more differential JNLs are copied. In the previous storage apparatus, one or more differential JNLs are reflected in order of the update numbers, to the data volumes in the previous storage apparatus.

公开(公告)号：EP2759937B1

公开(公告)日：2015-11-18

申请号：EP13183268.5

申请日：2013-09-06

Applicant: Hitachi, Ltd.

Inventor： Deguchi, Akira

IPC: G06F11/20

CPC classification number: G06F12/00 ,  G06F11/2064 ,  G06F11/2074 ,  G06F2201/855

公开(公告)号：EP2183677A4

公开(公告)日：2015-01-07

申请号：EP08796521

申请日：2008-07-24

Applicant: TWINSTRATA INC ,  BATES JOHN W

Inventor： BATES JOHN W

IPC: G06F15/16 ,  G06F12/00 ,  H04L29/08

CPC classification number: G06F3/0659 ,  G06F3/0607 ,  G06F3/061 ,  G06F3/065 ,  G06F3/067 ,  G06F11/2058 ,  G06F11/2069 ,  G06F11/2074 ,  G06F2201/855 ,  H04L67/1095

Abstract: An asynchronous peer-to-peer data replication method implemented within a replication cluster comprising at least one master node and at least a first client node includes entering an update in a data volume of the master node and storing the update in a master node storage. Next, updating a first active session in a master log and then sending a first message from the master node to the first client node. The first message comprises a first message content and first “piggybacked” data indicating that the first active session in the master log was updated. Next, receiving the first message by the first client node, registering that the first active session in the master log was updated and signaling internally that the first active session in the master log was updated. Next, sending an update request from the first client node to the master node, processing the update request by the master node and sending the update to the first client node. Finally, receiving the update by the first client node and updating the first active session in a first client log.

公开(公告)号：EP2759937A1

公开(公告)日：2014-07-30

申请号：EP13183268.5

申请日：2013-09-06

Applicant: Hitachi Ltd.

Inventor： Deguchi, Akira

IPC: G06F11/20

CPC classification number: G06F12/00 ,  G06F11/2064 ,  G06F11/2074 ,  G06F2201/855

Abstract: According to one aspect of the invention, a storage system comprises: a plurality of storage devices; and a controller operable to manage a secondary volume (701), of a remote copy pair with a primary volume (601) of another storage system (600), and corresponding to a portion of the plurality of storage devices. The secondary volume (701) has a function for storing data included in journal data sent from said another storage system (600) according to a remote copy procedure. The controller is operable to handle the journal data to be stored temporarily in a third volume corresponding to another portion of the plurality of storage devices before storing the data of the journal data to the secondary volume (701), if a relationship between the journal data and another journal data, which has smaller sequence number than sequence number of the journal data and is sent from said another storage system (600) to the storage system (700), has a condition.

Abstract translation: 根据本发明的一个方面，一种存储系统包括：多个存储装置; 以及控制器，其可操作以管理远程副本对与另一存储系统（600）的主卷（601）并且对应于所述多个存储设备的一部分的辅助卷（701）。 次级卷（701）具有根据远程复制过程存储从所述另一存储系统（600）发送的日志数据中包含的数据的功能。 如果所述日志数据之间的关系，则所述控制器可操作以将所述日志数据临时存储在与所述多个存储设备的另一部分相对应的第三卷中，然后将所述日志数据的数据存储到所述辅助卷（701） 并且具有比日志数据的序列号小的序列号并且从所述另一存储系统（600）发送到存储系统（700）的另一个日志数据具有条件。