公开(公告)号：US06240486B1

公开(公告)日：2001-05-29

申请号：US09363482

申请日：1999-07-29

申请人： Yuval Ofek ,  Moshe Yanai

发明人： Yuval Ofek ,  Moshe Yanai

IPC分类号： G06F1200

CPC分类号： G06F3/0607 ,  G06F3/0647 ,  G06F3/067 ,  G06F3/0689 ,  G06F12/0638 ,  G06F12/08 ,  G06F12/0866 ,  G11B5/86 ,  G11B19/02

摘要： A system and method for providing on-line, real-time, transparent data migration from an existing storage device to a replacement storage device. The existing and replacement storage devices are connected as a composite storage device that is coupled to a host, network or other data processing system. The replacement storage device includes a table which identifies data elements that have migrated to the replacement storage device. When a host system makes a data transfer request for one or more data elements, the replacement storage device determines whether the data elements have been migrated. If the data elements have migrated, the replacement storage device responds to the data transfer request independently of any interaction with the existing storage device. If the data elements have not migrated, the replacement storage device migrates the requested data elements and then responds to the data request and updates the data element map or table. When not busy servicing other requests, the replacement storage device operates in a background mode to migrate data elements so the data migration can occur concurrently with and transparently to system operations.

公开(公告)号：US6101497A

公开(公告)日：2000-08-08

申请号：US842953

申请日：1997-04-25

申请人： Yuval Ofek

发明人： Yuval Ofek

IPC分类号： G06F12/00 ,  G06F3/06 ,  G06F11/14 ,  G06F11/20 ,  G06F13/00 ,  G06F17/30

CPC分类号： G06F11/2082 ,  G06F11/1451 ,  G06F11/2064 ,  G06F11/2066 ,  Y10S707/99953

摘要： A data network with data storage facilities for providing redundant data storage and for enabling concurrent access to the data for multiple purposes. A first data processing system with a first data facility stores a data base and processes transactions or other priority applications. A second data storage facility, that may be physically separated from the first data storage facility, mirrors the data in the first data storage facility. In a concurrent access operating mode, the second data storage facility makes the data available to an application concurrently with, but independently of, the operation of the other application. On completion of the concurrent operation, the second data storage facility can reconnect with and synchronizes with the first data storage facility thereby to reestablish the mirroring operation.

公开(公告)号：US6092066A

公开(公告)日：2000-07-18

申请号：US656035

申请日：1996-05-31

申请人： Yuval Ofek

发明人： Yuval Ofek

IPC分类号： G06F11/14 ,  G06F11/20 ,  G06F17/30

CPC分类号： G06F11/2082 ,  G06F11/1451 ,  G06F11/2064 ,  G06F11/2066 ,  Y10S707/99953

摘要： A data network with a remote data facility for providing redundant data storage and for enabling concurrent access to the data for multiple purposes. A local data processing system with a data facility stores a data base and processes transactions or other priority applications. A second system, physically separated from the first system includes the remote data facility that normally mirrors the data in the first system. In an independent access operating mode, the second system is enabled to operate on the data within its data facility concurrently with, but independently of, the operation of the first system. On completion of the independent operation, the second system reconnects with and synchronizes with the first system thereby to reestablish the mirroring operation of the second system.

摘要翻译： 具有远程数据设施的数据网络，用于提供冗余数据存储，并允许同时访问数据用于多个目的。 具有数据设施的本地数据处理系统存储数据库并处理事务或其他优先级应用。 与第一系统物理分离的第二系统包括通常反映第一系统中的数据的远程数据设施。 在独立的访问操作模式中，第二系统能够与第一系统的操作同时地操作其数据设备内的数据。 独立操作完成后，第二个系统与第一个系统重新连接并与之同步，从而重新建立第二个系统的镜像操作。

公开(公告)号：US5857208A

公开(公告)日：1999-01-05

申请号：US656036

申请日：1996-05-31

申请人： Yuval Ofek

发明人： Yuval Ofek

IPC分类号： G06F11/14 ,  G06F11/20 ,  G06F17/30

CPC分类号： G06F11/2082 ,  G06F11/1451 ,  Y10S707/99953 ,  Y10S707/99955

摘要： A data network with a remote data facility for providing redundant data storage and for enabling concurrent point-in-time backup operations. A local data processing system with a data facility stores a data base and processes applications. A second system, physically separated from the first system, includes a data facility that normally mirrors the data in the first system. In a backup mode, the second system is enabled to transfer data from its data facility to a backup facility concurrently with, but independently of, the operation of the first system. On completion of the backup operation, the second system reconnects with and synchronizes with the first system thereby to reestablish the mirroring operation of the second system.

公开(公告)号：US06654752B2

公开(公告)日：2003-11-25

申请号：US10228783

申请日：2002-08-26

申请人： Yuval Ofek

发明人： Yuval Ofek

IPC分类号： G06F1730

CPC分类号： G06F11/2082 ,  G06F11/1451 ,  G06F11/2064 ,  G06F11/2066 ,  Y10S707/99953

摘要： A data network with data storage facilities for providing redundant data storage and for enabling concurrent access to the data for multiple purposes. A first data processing system with a first data facility stores a data base and processes transactions or other priority applications. A second data storage facility, that may be physically separated from the first data storage facility, mirrors the data in the first data storage facility. In a concurrent access operating mode, the second data storage facility makes the data available to an application concurrently with, but independently of, the operation of the other application. On completion of the concurrent operation, the second data storage facility can reconnect with and synchronizes with the first data storage facility thereby to reestablish the mirroring operation.

公开(公告)号：US06587935B2

公开(公告)日：2003-07-01

申请号：US10229233

申请日：2002-08-27

申请人： Yuval Ofek

发明人： Yuval Ofek

IPC分类号： G06E1200

CPC分类号： G06F11/2074 ,  G06F11/2069 ,  G06F11/2076

摘要： A data processing network including a local system and a geographically remote system. Each of the local and remote systems includes a data storage facility. The remote data storage facility mirrors the local data storage facility. In a normal operating mode, the local and remote systems operate in near synchronism or in synchronism. In an alternate operating mode, writing operations at the local system immediately update the storage devices in the local data storage facility. Transfers of corresponding data to the remote data storage facility are made independently of and asynchronously with respect to the operation of the local system.

公开(公告)号：US06581143B2

公开(公告)日：2003-06-17

申请号：US10142164

申请日：2002-05-09

申请人： Mathieu Gagne ,  Yuval Ofek

发明人： Mathieu Gagne ,  Yuval Ofek

IPC分类号： G06F1200

CPC分类号： G06F11/1451 ,  G06F11/1469

摘要： A data storage facility that allows data on a standard device to be replicated to other storage devices for independent and concurrent access. The standard device includes first and second tables for monitoring the operation of the standard device. The other storage device that receive the copies have tables that identify their status. The system utilizes these tables in various combinations to enable multiple copies to be altered and updated.

公开(公告)号：US06401178B1

公开(公告)日：2002-06-04

申请号：US09471848

申请日：1999-12-23

申请人： Mathieu Gagne ,  Yuval Ofek

发明人： Mathieu Gagne ,  Yuval Ofek

IPC分类号： G06F1200

CPC分类号： G06F11/1451 ,  G06F11/1469

摘要： A data storage facility that allows data on a standard device to be replicated to other storage devices for independent and concurrent access. The standard device includes first and second tables for monitoring the operation of the standard device. The other storage device that receive the copies have tables that identify their status. The system utilizes these tables in various combinations to enable multiple copies to be altered and updated.

摘要翻译： 允许将标准设备上的数据复制到其他存储设备进行独立和并发访问的数据存储设施。 标准设备包括用于监视标准设备的操作的第一和第二表。 接收副本的其他存储设备具有标识其状态的表。 系统以各种组合方式使用这些表格，以便更改和更新多个副本。

公开(公告)号：US6044444A

公开(公告)日：2000-03-28

申请号：US819672

申请日：1997-03-17

申请人： Yuval Ofek

发明人： Yuval Ofek

IPC分类号： G06F11/20 ,  G06F12/16

CPC分类号： G06F11/2071 ,  G06F11/2066 ,  G06F11/2079 ,  G06F11/2082

摘要： Two data storage systems are interconnected by a data link for remote mirroring of data. Each volume of data is configured as local, primary in a remotely mirrored volume pair, or secondary in a remotely mirrored volume pair. Normally, a host computer directly accesses either a local or a primary volume, and data written to a primary volume is automatically sent over the link to a corresponding secondary volume. Each remotely mirrored volume pair can operate in a selected synchronization mode including synchronous, semi-synchronous, adaptive copy--remote write pending, and adaptive copy--disk. A number of automatic and non-automatic recovery mechanisms are provided on a logical volume basis for a desired level of data integrity and degree of operator or application program involvement. If a "volume domino" mode is enabled for a remotely mirrored volume pair, access to a volume of the pair is denied when the other volume is inaccessible. In a "links domino" mode, access to all remotely mirrored volumes is denied when remote mirroring is disrupted by an all-links failure. The domino modes can be used to initiate application-based recovery, for example, recovering a secondary data file using a secondary log file. In an overwrite cache mode, remote write-pending data in cache can be overwritten. In a "log-in-cache" mode, multiple versions of write data can be stored in cache in order to recover from a "rolling disaster".

摘要翻译： 两个数据存储系统通过用于数据远程镜像的数据链路相互连接。 每卷数据被配置为本地，主要在远程镜像卷对中，或辅助在远程镜像卷对中。 通常，主机直接访问本地或主卷，并且写入主卷的数据将通过链接自动发送到相应的辅助卷。 每个远程镜像卷对可以在所选择的同步模式中操作，包括同步，半同步，自适应复制远程写入挂起和自适应复制盘。 在逻辑卷基础上提供了许多自动和非自动恢复机制，以达到期望的数据完整性程度和操作员或应用程序参与程度。 如果为远程镜像卷对启用“体积多米诺骨牌”模式，则在其他卷无法访问时，对该卷的访问将被拒绝。 在“连接多米诺骨牌”模式下，当远程镜像被全连接故障中断时，对所有远程镜像卷的访问被拒绝。 多米诺骨牌模式可用于启动基于应用程序的恢复，例如，使用辅助日志文件恢复辅助数据文件。 在覆盖缓存模式下，高速缓存中的远程写挂起数据可以被覆盖。 在“登录缓存”模式下，多个版本的写入数据可以存储在缓存中，以便从“滚动灾难”中恢复。

公开(公告)号：US07313578B2

公开(公告)日：2007-12-25

申请号：US10752256

申请日：2004-01-06

申请人： Mathieu Gagne ,  Yuval Ofek

发明人： Mathieu Gagne ,  Yuval Ofek

IPC分类号： G06F17/30

CPC分类号： G06F11/2082 ,  G06F11/1451 ,  G06F11/1456 ,  G06F11/1466 ,  G06F11/2058 ,  G06F11/2069 ,  G06F11/2071 ,  Y10S707/99938 ,  Y10S707/99945 ,  Y10S707/99955

摘要： A data storage facility for transferring data from a data altering apparatus, such as a production data processing site to a remote data receiving site. The data storage facility includes a first data store for recording each change in the data generated by the data altering apparatus. A register set records each change on a track-by-track basis. A second data store has first and second operating modes. During a first operating mode the second data store becomes a mirror of the first data store. During a second operating mode the second data store ceases to act as a mirror and becomes a source for a transfer of data to the data receiving site. Only information that has been altered, i.e., specific tracks that have been altered, are transferred during successive operations in the second operating mode. Commands from the local production site initiate the transfers between the first and second operating modes.

摘要翻译： 一种数据存储设备，用于将数据从诸如生产数据处理站点的数据改变设备传送到远程数据接收站点。 数据存储设施包括用于记录由数据改变装置生成的数据的每个改变的第一数据存储器。 一个寄存器集在逐个轨道上记录每个变化。 第二数据存储具有第一和第二操作模式。 在第一操作模式期间，第二数据存储变为第一数据存储的镜像。 在第二操作模式期间，第二数据存储器停止作为镜像，并且成为用于将数据传送到数据接收站点的源。 仅在第二操作模式中的连续操作期间传送已被改变的信息，即已被改变的特定轨道。 来自本地生产现场的命令启动第一和第二种操作模式之间的转移。