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1. 发明授权

US5692155A Method and apparatus for suspending multiple duplex pairs during back up processing to insure storage devices remain synchronized in a sequence consistent order 失效
标题翻译：在备份处理期间暂停多个双工对以确保存储设备的方法和装置保持以顺序一致的顺序同步
公开(公告)号：US5692155A
公开(公告)日：1997-11-25
申请号：US424930
申请日：1995-04-19
申请人： James Lincoln Iskiyan , Robert Frederic Kern , William Frank Micka , Robert Wesley Shomler
发明人： James Lincoln Iskiyan , Robert Frederic Kern , William Frank Micka , Robert Wesley Shomler
IPC分类号： G06F12/16 , G06F3/06 , G06F11/20 , G06F12/08 , G06F13/00
CPC分类号： G06F11/2082 , G06F11/2064
摘要： A data storage system atomically suspends multiple duplex pairs across either a single storage subsystem or multiple storage subsystems. The duplex pairs are suspended such that the data on the secondary DASDs of the duplex pairs is maintained in a sequence consistent order. A host processor in the data storage system running an application generates records and record updates to be written to the primary DASDs of the duplex pairs. The storage controller directs copies of the records and record updates to the secondary DASDs of the duplex pairs. Sequence consistency is maintained on the secondary DASDs by quiescing the duplex pairs and then suspending the duplex pairs with change recording. Quiescing the duplex pairs allows any current write I/O in progress to complete to the primary DASD. The storage controller then locks out any subsequent write I/O from the host processor by raising a long busy signal to such subsequent write requests. Suspending the duplex pairs with change recording directs the storage controller to mark the physical address of the primary DASD which the application in the host processor updates between the time the duplex pair is suspended and then is reestablished.
摘要翻译：数据存储系统通过单个存储子系统或多个存储子系统原子地挂起多个双工对。双工对被暂停，使得双工对的辅助DASD上的数据以顺序一致的顺序被维持。运行应用程序的数据存储系统中的主机处理器生成记录并记录要写入双工对的主DASD的更新。存储控制器指示记录的副本并记录更新到双工对的辅助DASD。通过停止双工对，然后通过更改记录来挂起双工对，在辅助DASD上维持序列一致性。停止双工对允许正在进行的任何当前写I / O完成到主DASD。然后，存储控制器通过将长忙信号提升到这样的后续写请求来锁定来自主处理器的任何后续写入I / O。使用更改记录挂起双工对可指示存储控制器标记主DASD的物理地址，主DASD的应用程序在双工对暂停时间然后被重新建立之间更新。

2. 发明授权

US5734818A Forming consistency groups using self-describing record sets for remote data duplexing 失效
标题翻译：使用自描述记录集形成远程数据双工的一致性组
公开(公告)号：US5734818A
公开(公告)日：1998-03-31
申请号：US644921
申请日：1996-05-10
申请人： Robert Frederic Kern , Ronald Maynard Kern , Gregory Edward McBride , William Frank Micka , Claus William Mikkelsen , David Michael Shackelford , Robert Wesley Shomler
发明人： Robert Frederic Kern , Ronald Maynard Kern , Gregory Edward McBride , William Frank Micka , Claus William Mikkelsen , David Michael Shackelford , Robert Wesley Shomler
IPC分类号： G06F3/06 , G06F11/14 , G06F11/20 , G06F12/00 , G06F12/16 , G06F13/00 , G11C29/00
CPC分类号： G06F11/2071 , G06F11/2064 , G11C29/74 , G06F11/1443 , G06F11/2074 , G06F2201/82
摘要： A remote data shadowing system provides storage based, real time disaster recovery capability. Record updates at a primary site cause write I/O operations in a storage subsystem therein. The write I/O operations are time stamped and the time, sequence, and physical locations of the record updates are collected in a primary data mover. The primary data mover groups sets of the record updates and associated control information based upon a predetermined time interval, the primary data mover appending a prefix header to the record(updates thereby forming self describing record sets. The self describing record sets are transmitted to a remote secondary site wherein consistency groups are formed such that the record updates are ordered so that the record updates can be shadowed in an order consistent with the order the record updates cause write I/O operations at the primary site.
摘要翻译：远程数据阴影系统提供基于存储的实时灾难恢复功能。在主站点记录更新会导致其中的存储子系统中的写入I / O操作。写I / O操作是时间戳的，并且记录更新的时间，顺序和物理位置被收集在主数据移动器中。主数据移动器基于预定时间间隔对记录更新和相关联的控制信息进行分组，主数据移动器向记录附加前缀标题（由此更新，从而形成自描述记录集，自描述记录集被发送到远程辅助站点，其中形成一致性组，使得记录更新被排序，使得记录更新可以以与记录更新在主站点上写入I / O操作的顺序一致的顺序被遮蔽。

3. 发明授权

US5720029A Asynchronously shadowing record updates in a remote copy session using track arrays 失效
标题翻译：使用轨道数组异步地在远程复制会话中镜像记录更新
公开(公告)号：US5720029A
公开(公告)日：1998-02-17
申请号：US506490
申请日：1995-07-25
申请人： Robert Frederic Kern , William Frank Micka , Claus William Mikkelsen , Robert Wesley Shomler , Warren Keith Stanley , Richard Kent Treiber
发明人： Robert Frederic Kern , William Frank Micka , Claus William Mikkelsen , Robert Wesley Shomler , Warren Keith Stanley , Richard Kent Treiber
IPC分类号： G06F11/20 , G06F11/00
CPC分类号： G06F11/2074 , G06F11/2064
摘要： A disaster recovery system providing asynchronous remote data shadowing between a primary and a secondary site uses a pair of track arrays for each primary data storage device of a remote copy pair to monitor which record updates are in transit between the primary site and the secondary site. A host processor at the primary site of the disaster recovery system transfers a sequentially consistent order of copies of record updates to the secondary site for back-up purposes. The copied record updates are stored on the secondary data storage devices which form remote copy pairs with the primary data storage devices at the primary site. One track array, the active track array, is used to set elements according to which tracks on the primary data storage device receive record updates from the host processor at the primary site. The other track array, the recovery track array, designates which record updates comprise the copied record updates currently transferred from the primary site to the secondary site for data shadowing and is used for recovery should an error interrupt the transfer. The track arrays are toggled once the consistency group transfer completes, the recovery track array becoming the active track array and the active track array becoming the recovery track array.
摘要翻译：在主站点和辅助站点之间提供异步远程数据镜像的灾难恢复系统使用远程副本对的每个主数据存储设备的一对轨道阵列来监视主站点和辅助站点之间传输的记录更新。在灾难恢复系统的主站点处的主机处理器将记录更新的副本顺序传送到辅助站点以进行备份。复制的记录更新存储在辅助数据存储设备上，其与主站点上的主数据存储设备形成远程副本对。一个磁道阵列，主动磁道阵列，用于根据主数据存储设备的哪些磁道在主站点处从主机处理器接收记录更新来设置元素。另一个轨道阵列（恢复轨道阵列）指定哪个记录更新包括当前从主站点传送到次站点的复制记录更新以用于数据阴影，并且如果错误中断传输，则用于恢复。一旦一致性组传输完成，轨道阵列就会切换，恢复轨道阵列成为主动轨道阵列，而主动轨道阵列成为恢复轨道阵列。

4. 发明授权

US06304980B1 Peer-to-peer backup system with failure-triggered device switching honoring reservation of primary device 有权
标题翻译：具有故障触发设备切换的对等备份系统保证主设备的预留
公开(公告)号：US06304980B1
公开(公告)日：2001-10-16
申请号：US09234806
申请日：1999-01-19
申请人： Brent Cameron Beardsley , James Lincoln Iskiyan , William Frank Micka , Harry Morris Yudenfriend
发明人： Brent Cameron Beardsley , James Lincoln Iskiyan , William Frank Micka , Harry Morris Yudenfriend
IPC分类号： G06F1100
CPC分类号： G06F11/2064 , G06F11/2071 , G06F11/2094 , G06F11/2097 , Y10S707/99953 , Y10S707/99955
摘要： A peer-to-peer backup storage system automatically switches from a primary storage site to a mirrored backup site in response to a primary site failure, where the secondary site then honors any existing host initiated reservation of primary storage. Each site includes a storage controller and storage, where the primary site receives and stores data and forwards the received data to the secondary site for storage to mirror contents of primary storage. The primary and secondary sites are coupled to one or more hosts. Whenever the primary controller receives a reserve request from a host, it reserves the primary storage (or a subpart thereof) for the exclusive use of the reserve-initiating host. This may involve, for example, the primary controller storing a path group ID that identifies the reserving host. The primary controller also notifies the secondary controller of the reservation, e.g., sending the path group ID involved in the reservation operation to the secondary site. Responsive to a primary site failure, the system performs “switch” operation where the system stops forwarding data from the primary site to the secondary site. Furthermore, the secondary site is operated in substitution for the primary site, to receive and store data from the hosts. Importantly, the secondary site honors the existing reservation of the primary storage by reserving the secondary storage to the first reserve-initiating host.
摘要翻译：点对点备份存储系统会自动从主存储站点切换到镜像备份站点，以响应主站点故障，其中辅助站点然后对任何现有主机启动的主存储预留进行授权。每个站点都包括一个存储控制器和存储，其中主站点接收并存储数据，并将接收到的数据转发到辅助站点以存储以镜像主存储器的内容。主站点和辅站点耦合到一个或多个主机。每当主控制器从主机接收到保留请求时，它将保留主存储器（或其子部分），用于备用启动主机的独占使用。这可能涉及例如主控制器存储标识保留主机的路径组ID。主控制器还向辅助控制器通知预约，例如将预约操作中涉及的路径组ID发送到辅助站点。响应于主站点故障，系统执行“切换”操作，系统停止将数据从主站点转发到辅助站点。此外，辅助站点的操作代替主站点，从主机接收和存储数据。重要的是，辅助站点通过将辅助存储预留到第一储备发起主机来表现主存储的现有预留。

5. 发明授权

US5920695A Method and means for bidirectional peer-coupled communication across a single ESCON interface 失效
标题翻译：通过单个ESCON接口进行双向对等通信的方法和手段
公开(公告)号：US5920695A
公开(公告)日：1999-07-06
申请号：US782474
申请日：1997-01-10
申请人： Roger Gregory Hathorn , Bret Wayne Holley , James Lincoln Iskiyan , William Frank Micka
发明人： Roger Gregory Hathorn , Bret Wayne Holley , James Lincoln Iskiyan , William Frank Micka
IPC分类号： G06F3/06 , G06F13/12 , G06F13/14 , G06F13/00
CPC分类号： G06F13/122
摘要： A method for establishing bilateral communications over a single ESCON link coupling a pair of control units. The method steps include (a) permitting link address acquisition between directly connected link-level facilities that simultaneously assume the role of a master control unit in a peer-to-peer remote copy (PPRC) configuration, (b) resolving conflicting device-level frames that initiate a path to a device (also termed an I/O connection), and (c) dynamically determining the role assumed by a link-level facility (master or slave) when a single logical path is shared.
摘要翻译：一种用于通过耦合一对控制单元的单个ESCON链路建立双向通信的方法。方法步骤包括：（a）允许在对等远程复制（PPRC）配置中同时承担主控单元的角色的直接连接的链路级设施之间的链路地址获取，（b）解决冲突的设备级启动到设备（也称为I / O连接）的路径的帧，以及（c）当共享单个逻辑路径时动态地确定链路级设施（主机或从机）所承担的角色。

6. 发明授权

US06578120B1 Synchronization and resynchronization of loosely-coupled copy operations between a primary and a remote secondary DASD volume under concurrent updating 失效
标题翻译：在并发更新的主要和远程辅助DASD卷之间的松耦合复制操作的同步和重新同步
公开(公告)号：US06578120B1
公开(公告)日：2003-06-10
申请号：US08881118
申请日：1997-06-24
申请人： Robert Nelson Crockett , William Frank Micka , Robert Wesley Shomler , Warren Keith Stanley
发明人： Robert Nelson Crockett , William Frank Micka , Robert Wesley Shomler , Warren Keith Stanley
IPC分类号： G06F1216
CPC分类号： G06F11/2082 , G06F3/0601 , G06F11/201 , G06F11/2064 , G06F11/2087 , G06F2003/0697
摘要： A method for assuring consistency between a primary volume and a remote secondary volume wherein a host CPU manages track-to-track transfers using loosely-coupled, storage control unit mediated data paths. The method includes initial volume synchronization in which concurrent updates to primary tracks are serialized by the copy progression at the secondary volume according to address. The method further includes volume resynchronization in the event of extrinsic error, fault, or the like in which bit maps and timestamps are used to determine the status of primary tracks either lost while in flight to the secondary volume or updated during a volume suspension interval. The bit maps and timestamps preserve the most recent version copy order of the tracks on the secondary volume. CONCURRENT UPDATING
摘要翻译：一种用于确保主卷和远程辅助卷之间的一致性的方法，其中主机CPU使用松散耦合的存储控制单元中介的数据路径来管理轨到轨传输。该方法包括初始卷同步，其中主轨道的并发更新通过根据地址的辅助卷的复制进度而被序列化。该方法还包括在外部误差，故障等的情况下的体积重新同步，其中使用位图和时间戳来确定在飞行到次要卷期间丢失或在体积暂停间隔期间更新的主轨迹的状态。位图和时间戳保留辅助卷上曲目的最新版本复制顺序。同期更新

7. 发明授权

US5555371A Data backup copying with delayed directory updating and reduced numbers of DASD accesses at a back up site using a log structured array data storage 失效
标题翻译：使用日志结构化阵列数据存储，在备份站点使用延迟目录更新和减少DASD访问数量进行数据备份复制
公开(公告)号：US5555371A
公开(公告)日：1996-09-10
申请号：US276379
申请日：1994-07-18
申请人： Linda Marie Duyanovich , William Frank Micka , Robert Wesley Shomler
发明人： Linda Marie Duyanovich , William Frank Micka , Robert Wesley Shomler
IPC分类号： G06F11/20 , G11C29/00 , G06F11/34
CPC分类号： G06F11/2074 , G06F11/2064 , G06F11/2082 , G11C29/74 , H04L67/1095 , H04L69/40 , G06F11/2066
摘要： Primary and secondary data processing systems are coupled via a communication system. Data storage in both systems is provided by a log structured array (LSA) system that stores data in compressed form. Each time data are updated within LSA, the updated data are stored in a data storage location different from the original data. Selected data recorded in a primary data storage of the primary system is remote dual copied to the secondary system for congruent storage in a secondary data storage, such as for disaster recovery purposes. The primary systems creates a remote copying session. Within such remote copying session, a series of "pending write update" sessions are ESTABLISHED. All data updated within each pending write update session is a consistency group of data. Within each pending write update session update data are retentively stored in both the primary and secondary systems (such as in a non-volatile cache). Addressability of such update data within a pending write update session is through separate pending write directories. The main (primary and secondary) directory for data is not updated such that all original (not updated) data are addressable. A COMMIT command terminates each pending write update session. Congruence of the sequence of updating in the primary system is maintained in the secondary system updating procedure.
摘要翻译：主要和次要数据处理系统通过通信系统耦合。两个系统中的数据存储由以压缩形式存储数据的日志结构化阵列（LSA）系统提供。每次在LSA内更新数据时，更新的数据都存储在与原始数据不同的数据存储位置。记录在主系统的主数据存储中的所选数据被远程双重复制到辅助系统，以便在次要数据存储中进行一致的存储，例如用于灾难恢复目的。主要系统创建远程复制会话。在这样的远程复制会话中，一系列“挂起的写入更新”会话被建立。在每个挂起的写入更新会话中更新的所有数据都是一致性数据组。在每个待处理的写入更新会话中，更新数据被保持存储在主系统和辅助系统中（例如在非易失性缓存中）。这种更新数据在挂起的写入更新会话中的可寻址性是通过单独的挂起的写入目录。数据的主要（主要和次要）目录不会更新，以便所有原始（未更新）数据可寻址。 COMMIT命令终止每个挂起的写更新会话。辅助系统更新过程维护主系统中更新顺序的一致性。

8. 发明授权

US5835954A Target DASD controlled data migration move 失效
标题翻译：目标DASD控制数据迁移
公开(公告)号：US5835954A
公开(公告)日：1998-11-10
申请号：US711623
申请日：1996-09-12
申请人： Linda Marie Duyanovich , William Frank Micka , Robert Wesley Shomler
发明人： Linda Marie Duyanovich , William Frank Micka , Robert Wesley Shomler
IPC分类号： G06F3/06 , G06F12/08 , G06F12/02
CPC分类号： G06F3/0614 , G06F3/0647 , G06F3/0679 , G06F12/0866
摘要： Non-disruptive data migration moves are performed form a source DASD to target DASD in a data subsystem. Both source and target DASDs comprise a cache and a nonvolatile store (NVS). Relative to the host, the target DASD generally operates as a source, managing requests for access to source DASD data by issuing I/O requests to the source DASD. First, the target DASD initiates a background data transfer, where data is copied from the source DASD to the target DASD preparing the target DASD to replace the source DASD. The data transfer includes copying data items directly from the source DASD's cache to that of the target DASD's cache, as well as copying data items from the source DASD's NVS to the target DASD's NVS. During background data transfer, the host can still perform data access operations, such as reads and writes, using the target DASD. Namely, for data already copied from the source DASD to the target DASD, the host reads this data from the target DASD. Host requests to read data not yet copied to the source DASD causes staging of the data from the source DASD to the target DASD. For host write requests, the data to be written to the target DASD, if no source data is needed to complete the write. To satisfy host write requests requiring data not yet copied from the source DASD, the data is copied from the source DASD to the target DASD.
摘要翻译：不间断数据迁移移动由源DASD执行，以在数据子系统中定位DASD。源和目标DASD都包括缓存和非易失性存储（NVS）。相对于主机，目标DASD通常作为源运行，通过向源DASD发出I / O请求来管理对源DASD数据的访问请求。首先，目标DASD启动后台数据传输，其中数据从源DASD复制到目标DASD，准备目标DASD以替换源DASD。数据传输包括将数据项直接从源DASD的缓存复制到目标DASD缓存的数据项，以及将数据项从源DASD的NVS复制到目标DASD的NVS。在背景数据传输期间，主机仍然可以使用目标DASD执行数据访问操作，例如读取和写入。即，对于已经从源DASD复制到目标DASD的数据，主机从目标DASD读取该数据。主机请求读取尚未复制到源DASD的数据会导致将数据从源DASD分段到目标DASD。对于主机写请求，要写入目标DASD的数据，如果不需要源数据来完成写操作。为了满足要求数据尚未从源DASD复制的主机写请求，数据从源DASD复制到目标DASD。

9. 发明授权

US5657440A Asynchronous remote data copying using subsystem to subsystem communication 失效
标题翻译：使用子系统进行子系统通信的异步远程数据复制
公开(公告)号：US5657440A
公开(公告)日：1997-08-12
申请号：US671096
申请日：1996-06-28
申请人： William Frank Micka , Robert Wesley Shomler
发明人： William Frank Micka , Robert Wesley Shomler
IPC分类号： G06F12/00 , G06F11/20 , G11C29/00 , G06F11/00
CPC分类号： G06F11/2074 , G06F11/2064 , G11C29/74 , Y10S707/99931
摘要： A method and means for asynchronous remote data duplexing at a distant location from copies based at a primary site storage subsystem in which there are first and second pluralities of subsystems at primary and remote sites respectively. Each of the first plurality of subsystems is independently coupled to one or more of the second plurality of subsystems. Further, the first plurality of subsystems is interconnected, and the second plurality of subsystems is interconnected. The method utilizes checkpoint messages to maintain sequence integrity between the first and second plurality of subsystems without the use of a centralized communications service.
摘要翻译：一种用于远程位置处的异步远程数据双工的方法和装置，所述复制基于主站点存储子系统，其中分别在主站点和远程站点处存在第一和第二多个子系统。第一多个子系统中的每一个独立地耦合到第二多个子系统中的一个或多个。此外，第一多个子系统互连，并且第二多个子系统互连。该方法利用检查点消息来维持第一和第二多个子系统之间的序列完整性，而不使用集中通信服务。

10. 发明授权

US06842834B2 Synchronization and resynchronization of loosely-coupled copy operations between a primary and a remote secondary DASD volume under concurrent updating 有权
标题翻译：在并发更新的主要和远程辅助DASD卷之间的松耦合复制操作的同步和重新同步
公开(公告)号：US06842834B2
公开(公告)日：2005-01-11
申请号：US10394300
申请日：2003-03-20
申请人： Robert Nelson Crockett , William Frank Micka , Robert Wesley Shomler , Warren Keith Stanley
发明人： Robert Nelson Crockett , William Frank Micka , Robert Wesley Shomler , Warren Keith Stanley
IPC分类号： G06F3/06 , G06F11/20 , G06F12/16
CPC分类号： G06F11/2082 , G06F3/0601 , G06F11/201 , G06F11/2064 , G06F11/2087 , G06F2003/0697
摘要： A method for assuring consistency between a primary volume and a remote secondary volume wherein a host CPU manages track-to-track transfers using loosely-coupled, storage control unit mediated, data paths. The method includes initial volume synchronization in which concurrent updates to primary tracks are serialized by the copy progression at the secondary volume according to address. The method further includes volume resynchronization in the event of extrinsic error, fault, or the like in which the status of primary tracks updated during a volume suspension interval utilize bit maps to determine status of tracks unmodified during the suspension interval, and updated tracks and timestamps in addition to addresses. The bit maps and timestamps preserve the most recent version copy order of the tracks on the secondary volume.
摘要翻译：一种用于确保主卷和远程辅助卷之间的一致性的方法，其中主机CPU使用松散耦合的存储控制单元介导的数据路径来管理轨到轨传输。该方法包括初始卷同步，其中主轨道的并发更新通过根据地址的辅助卷的复制进度而被序列化。该方法还包括在外部误差，故障等的情况下的体积重新同步，其中在音量暂停间隔期间更新的主音轨的状态利用位图来确定在暂停间隔期间未修改的轨道的状态，以及更新的轨道和时间戳除了地址。位图和时间戳保留辅助卷上曲目的最新版本复制顺序。

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