公开(公告)号：EP1969472B1

公开(公告)日：2009-12-09

申请号：EP06848312.2

申请日：2006-12-28

Applicant: EMC Corporation

Inventor： MEIRI, David ,  BJORNSSON, Magnus

IPC: G06F11/14 ,  G06F11/20

CPC classification number: G06F11/2064 ,  G06F11/1451 ,  G06F11/2074 ,  G06F12/0815 ,  G06F2201/855

公开(公告)号：EP1505504A3

公开(公告)日：2009-04-29

申请号：EP03021756.6

申请日：2003-09-25

Applicant: Hitachi, Ltd.

Inventor： Watanabe, Naoki, Hitachi, Ltd.

IPC: G06F11/20

CPC classification number: G06F11/2074 ,  G06F11/2058 ,  G06F2201/855

Abstract: A first storage unit system (104a) and a second storage unit system (104b) are connected together via a third storage unit system (104c). When executing a remote copy process, the first storage unit system responds to a write request received from a computer (102a) to transmit to the third storage unit system a journal having write data and address information indicative of a storage position at which the write data is written and requests the third storage unit system to write the journal. The second storage unit system receives control information (107a) issued by the first storage unit system and including the storage position of the journal and on the basis of the control information, reads the journal from the third storage unit system. Then, the second storage unit system follows address information contained in the journal to write the write date contained in the journal to a disk (210b) inside the second storage unit system.

公开(公告)号：EP1647891A3

公开(公告)日：2008-06-04

申请号：EP04030506.2

申请日：2004-12-22

Applicant: Hitachi Ltd.

Inventor： Iwamura, Takashige c/o Hitachi,Ltd., I P Group ,  Asaka, Yoshihiro c/o Hitachi,Ltd., I P Group ,  Arakawa, Hiroshi c/o Hitachi,Ltd., I P Group ,  Ninose, Kenta c/o Hitachi,Ltd., I P Group

IPC: G06F11/20

CPC classification number: G06F11/2079 ,  G06F11/1662 ,  G06F11/2058 ,  G06F11/2069 ,  G06F11/2074 ,  G06F2201/855 ,  Y10S707/99953 ,  Y10S707/99955

Abstract: During the normal operation state of a computer system 1000, the data stored in a primary storage system 200P is copied to an intermediate storage system 200I via synchronous copying and the data stored in the intermediate storage system 200I is copied to a secondary storage system 200R via asynchronous copying. During the reverse operation state, however, the data stored in the secondary storage system 200R is copied to the intermediate storage system 200I via asynchronous copying and the data stored in the intermediate storage system 200I is copied to the primary storage system 200P via synchronous copying.
In this way, practical remote copying can be carried out in a computer system in which three or more storage devices are installed at different locations and connected serially.

公开(公告)号：EP1569119A3

公开(公告)日：2007-02-21

申请号：EP05075845.7

申请日：2000-08-02

Applicant: EMC CORPORATION

Inventor： Duprey, Dennis ,  Roa, Guillermo ,  Lucovsky, Jeffrey

IPC: G06F11/14

CPC classification number: G06F11/2082 ,  G06F11/2058 ,  G06F11/2074 ,  G06F2201/855 ,  Y10S707/99953 ,  Y10S707/99955

Abstract: In a remote mirroring system, device, and method, a master storage unit stores information in a log and uses the information from the log to quickly resynchronize slave images following a failure in the master storage unit. Upon receiving a write request from a host, the master storage unit stores a write entry in the log. The write entry includes information that identifies a portion of the slave images that may be unsynchronized from the master image due to the write request. The master storage unit then proceeds to update the master image and the slave images. The log is preserved through the failure, such that the.log is available to the master storage unit upon recovery from the failure. When the master storage unit is operational following the failure, the master storage unit resynchronizes the slave images to the master image by copying those portions of the master image indicated in the log to the slave images.

公开(公告)号：EP1240591A4

公开(公告)日：2006-10-11

申请号：EP00923070

申请日：2000-03-03

Applicant: MIRALINK CORP

Inventor： MCCABE RON ,  CHURCH ROBERT ,  CAMP TRACY ,  CARD STUART W ,  SCHROEDER DAVID J

IPC: G06F3/06 ,  G06F11/20 ,  G06F15/16 ,  G06F17/30

CPC classification number: H04L67/1095 ,  G06F3/0619 ,  G06F3/0626 ,  G06F3/065 ,  G06F3/067 ,  G06F3/0689 ,  G06F11/1451 ,  G06F11/2058 ,  G06F11/2064 ,  G06F11/2069 ,  G06F11/2074 ,  G06F2201/835 ,  G06F2201/84 ,  G06F2201/855 ,  H04L1/08 ,  H04L1/18 ,  H04L67/1097

Abstract: Methods, systems, and configured storage media are provided for flexible data mirroring. In particular, the invention provides many-to-one data mirroring, including mirroring from local servers running the same or different operating systems and/or file systems at two or more geographically dispersed locations. The invention also provides one-to-many data mirroring, mirroring with or without a dedicated private telecommunications link, and mirroring with or without a dedicated server or another server at the destination(s) to assist the remote mirroring unit(s). In addition, the invention provides flexibility by permitting the use of various combinations of one or more external storage units and/or RAID units to hold mirrored data. Spoofing, SCSI and other bus emulations, and further tools and techniques are used in various embodiments of the invention.

公开(公告)号：EP1647891A2

公开(公告)日：2006-04-19

申请号：EP04030506.2

申请日：2004-12-22

Applicant: Hitachi Ltd.

Inventor： Iwamura, Takashige c/o Hitachi,Ltd., I P Group ,  Asaka, Yoshihiro c/o Hitachi,Ltd., I P Group ,  Arakawa, Hiroshi c/o Hitachi,Ltd., I P Group ,  Ninose, Kenta c/o Hitachi,Ltd., I P Group

IPC: G06F11/20

CPC classification number: G06F11/2079 ,  G06F11/1662 ,  G06F11/2058 ,  G06F11/2069 ,  G06F11/2074 ,  G06F2201/855 ,  Y10S707/99953 ,  Y10S707/99955

Abstract: During the normal operation state of a computer system 1000, the data stored in a primary storage system 200P is copied to an intermediate storage system 200I via synchronous copying and the data stored in the intermediate storage system 200I is copied to a secondary storage system 200R via asynchronous copying. During the reverse operation state, however, the data stored in the secondary storage system 200R is copied to the intermediate storage system 200I via asynchronous copying and the data stored in the intermediate storage system 200I is copied to the primary storage system 200P via synchronous copying.
In this way, practical remote copying can be carried out in a computer system in which three or more storage devices are installed at different locations and connected serially.

Abstract translation: 在计算机系统1000的正常操作状态下，通过同步复制将存储在主存储系统200P中的数据复制到中间存储系统200I，并且存储在中间存储系统200I中的数据被复制到辅助存储系统200R，经由 异步复制。 然而，在反向运行状态下，存储在二次存储系统200R中的数据通过异步复制复制到中间存储系统200I，并且存储在中间存储系统200I中的数据通过同步复制被复制到主存储系统200P。 以这种方式，可以在其中三个或更多个存储设备安装在不同位置并且连续连接的计算机系统中进行实际的远程复制。

公开(公告)号：EP1562106A3

公开(公告)日：2005-09-28

申请号：EP05009878.9

申请日：2004-06-29

Applicant: Hitachi Ltd.

Inventor： Kasako, Naohisa ,  Kondo, Shuji ,  Suzuki, Toru ,  Koide, Takeshi

IPC: G06F3/06 ,  G06F11/20

CPC classification number: G06F11/2082 ,  G06F3/0607 ,  G06F3/0617 ,  G06F3/0635 ,  G06F3/0646 ,  G06F3/0659 ,  G06F3/067 ,  G06F11/2056 ,  G06F11/2058 ,  G06F11/2064 ,  G06F11/2069 ,  G06F11/2071 ,  G06F11/2074 ,  G06F2201/855

Abstract: A storage device system includes an information processing device and at least first and second storage devices. The first and second storage devices are equipped with first and second storage volumes, respectively. The information processing device generates first data including a first instruction that is to be executed by the second storage device, and sends a write request to a first write request section to write the first data according to a first communications protocol in the first storage volume. When the first data written in the first storage volume is the command to be executed by the second storage device, the first storage device sends to a second write request section a write request to write the first data according to a second communications protocol in the second storage volume. The second storage device executes the first command set in the first data that is written in the second storage volume.

公开(公告)号：EP1562118A2

公开(公告)日：2005-08-10

申请号：EP04013413.2

申请日：2004-06-07

Applicant: Hitachi, Ltd.

Inventor： Kawamura, Shunji, Hitachi Ltd., Intel. Prop. Group ,  Eguchi, Yoshiaki, Hitachi Ltd., Intel. Prop. Group

IPC: G06F11/20

CPC classification number: G06F11/2066 ,  G06F11/2064 ,  G06F11/2074 ,  G06F2201/855 ,  Y10S707/99953

Abstract: In a data processing system having a primary site and a secondary site, storage systems are connected to each other via a communication line, data update history is recorded in a storage device as a journal in the primary site, and the journal is transferred to the secondary site via the communication line. During such transfer, loads will not concentrate to a specific volume, by switching the volume that stores the journal in the primary site, while, by switching the transfer-destination volume of the journal in the secondary site.
With such arrangement, in a data processing system, it is possible to ensure data consistency in a plurality of sites and prevent the system throughput capacity from being deteriorated without applying loads to a host and a network, and without causing load concentration on a specific storage device that is caused as a result of data update or recovery operations.

Abstract translation: 在具有主站点和次站点的数据处理系统中，存储系统经由通信线路彼此连接，数据更新历史记录在作为主站点中的日志的存储设备中，并且日志被传送到 辅助站点通过通信线路。 在此类传输过程中，通过在主站点中切换存储日志的卷，而通过切换辅助站点中日志的传输目的地卷来，加载将不会集中在特定卷上。 通过这样的配置，在数据处理系统中，可以确保多个站点的数据一致性，并且在不向主机和网络施加负载的情况下防止系统吞吐量容量恶化，并且不会对特定存储器造成负载集中 由于数据更新或恢复操作而导致的设备。

公开(公告)号：EP1517241A3

公开(公告)日：2005-07-06

申请号：EP04253882.7

申请日：2004-06-29

Applicant: Hitachi Ltd.

Inventor： Kasako, Naohisa, c/o Hitachi Ltd. ,  Kondo, Shuji, c/o Hitachi Ltd. ,  Suzuki, Toru, c/o Hitachi Ltd. ,  Koide, Takeshi, c/o Hitachi Ltd.

IPC: G06F11/14 ,  G06F3/06 ,  G06F11/20

CPC classification number: G06F11/2082 ,  G06F3/0607 ,  G06F3/0617 ,  G06F3/0635 ,  G06F3/0646 ,  G06F3/0659 ,  G06F3/067 ,  G06F11/2056 ,  G06F11/2058 ,  G06F11/2064 ,  G06F11/2069 ,  G06F11/2071 ,  G06F11/2074 ,  G06F2201/855

Abstract: A storage device system includes an information processing device and at least first and second storage devices. The first and second storage devices are equipped with first and second storage volumes, respectively. The information processing device generates first data including a first instruction that is to be executed by the second storage device, and sends a write request to a first write request section to write the first data according to a first communications protocol in the first storage volume. When the first data written in the first storage volume is the command to be executed by the second storage device, the first storage device sends to a second write request section a write request to write the first data according to a second communications protocol in the second storage volume. The second storage device executes the first command set in the first data that is written in the second storage volume.

公开(公告)号：EP1494120A3

公开(公告)日：2005-02-16

申请号：EP04252272.2

申请日：2004-04-16

Applicant: Hitachi, Ltd.

Inventor： Suishu, Kazuhito c/o Hitachi, Ltd. I.P.G. ,  Hirakawa, Yusuke c/o Hitachi, Ltd. I.P.G. ,  Asaka, Yoshihiro c/o Hitachi, Ltd. I.P.G.

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

Abstract: A data processing system includes at least a first storage system, a second storage system and a third storage system. The third storage system maintains a replication of data stored in the first storage system. When updating data in the first storage system, the first storage system updates the replication of data stored in the third storage system and creates a journal. The journal is formed from a copy of data used for update and update information such as a write command for update, etc. The second storage system also maintains a replication of data stored in the first storage system. The second storage system obtains the journal, and updates data stored therein corresponding to data stored in the first storage system in the order of data update performed in the first storage system. When updating data stored in the third storage system corresponding to data stored in the first storage system, the third storage system creates a journal using data update numbers created in the first storage system. When the first storage system fails, the second storage system obtains the journal from the third storage system, and updates data stored therein corresponding to data stored in the first storage system in the order of data update performed in the first storage system.