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1. 发明授权

US06170023A System for accessing an input/output device using multiple addresses 有权
标题翻译：使用多个地址访问输入/输出设备的系统
公开(公告)号：US06170023A
公开(公告)日：2001-01-02
申请号：US09168017
申请日：1998-10-07
申请人： Brent Cameron Beardsley , James Lincoln Iskiyan , James McIlvain , Philip Ray Mills , Michael Aloysius Paulsen , William G. Thompson , Harry Morris Yudenfriend
发明人： Brent Cameron Beardsley , James Lincoln Iskiyan , James McIlvain , Philip Ray Mills , Michael Aloysius Paulsen , William G. Thompson , Harry Morris Yudenfriend
IPC分类号： G06F1300
CPC分类号： G06F12/06
摘要： Disclosed is a system for performing input/output (I/O) operations with a processing unit. A processing unit, such as a host system, determines a base and associated alias addresses to address an I/O device, such as a direct access storage device (DASD). The processing unit associates the determined base and alias addresses to the I/O device. The association of base and alias addresses is maintained constant for subsequent I/O operations until the processing unit detects a reassignment of the association of base and alias addresses. The processing unit then determines an available base or alias address to use with an I/O operation and may concurrently execute multiple I/O operations against the I/O device using the base and alias addresses.
摘要翻译：公开了一种用于利用处理单元执行输入/输出（I / O）操作的系统。诸如主机系统的处理单元确定基地址和关联的别名地址以寻址诸如直接访问存储设备（DASD）的I / O设备。处理单元将确定的基地址和别名地址与I / O设备相关联。基址和别名地址的关联在后续I / O操作中保持不变，直到处理单元检测到基地址和别名地址的关联的重新分配。处理单元然后确定与I / O操作一起使用的可用基地址或别名地址，并且可以使用基地址和别名地址同时对I / O设备执行多个I / O操作。

2. 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。

3. 发明授权

US06253260B1 Input/output data access request with assigned priority handling 有权
标题翻译：具有分配优先级处理的输入/输出数据访问请求
公开(公告)号：US06253260B1
公开(公告)日：2001-06-26
申请号：US09176632
申请日：1998-10-22
申请人： Brent Cameron Beardsley , James Lincoln Iskiyan , Harry Morris Yudenfriend
发明人： Brent Cameron Beardsley , James Lincoln Iskiyan , Harry Morris Yudenfriend
IPC分类号： G06F300
CPC分类号： G06F3/061 , G06F3/0659 , G06F3/0689
摘要： Disclosed is a system and method for processing a data access request (DAR). A processing unit, such as a storage controller, receives a DAR, indicating data to return on a channel, such as a channel connecting to a host system, and priority information for the received DAR. The processing unit retrieves the requested data for the received DAR from a memory area, such as a cache or direct access storage device (DASD), and determines whether there is a queue of data entries indicating retrieved data for DARs to transfer on the channel. The queued DARs include priority information. The processing unit processes at least one data entry in the queue, the priority information for the data entry, and the priority information for the received DAR to determine a position in the queue for the received DAR. The processing unit then indicates that the received DAR is at the determined position in the queue and processes the queue to select retrieved data to transfer on the channel to the host system.
摘要翻译：公开了一种用于处理数据访问请求（DAR）的系统和方法。诸如存储控制器的处理单元接收指示在诸如连接到主机系统的信道的信道上返回的数据的DAR以及所接收的DAR的优先级信息。处理单元从诸如高速缓存或直接访问存储设备（DASD）的存储区域检索所接收的DAR的请求数据，并且确定是否存在指示用于在信道上传送的DAR的检索数据的数据条目队列。排队的DAR包括优先级信息。处理单元处理队列中的至少一个数据条目，数据输入的优先级信息和所接收的DAR的优先级信息，以确定所接收的DAR的队列中的位置。处理单元然后指示所接收的DAR处于队列中的确定位置，并且处理队列以选择检索到的数据以在该信道上传送到主机系统。

4. 发明授权

US5680580A Remote copy system for setting request interconnect bit in each adapter within storage controller and initiating request connect frame in response to the setting bit 失效
标题翻译：远程复制系统，用于在存储控制器内的每个适配器中设置请求互连位，并响应设置位启动请求连接帧
公开(公告)号：US5680580A
公开(公告)日：1997-10-21
申请号：US396039
申请日：1995-02-28
申请人： Brent Cameron Beardsley , Roger Gregory Hathorn , Bret Wayne Holley , James Lincoln Iskiyan
发明人： Brent Cameron Beardsley , Roger Gregory Hathorn , Bret Wayne Holley , James Lincoln Iskiyan
IPC分类号： G06F3/06 , G06F11/20 , G06F12/16
CPC分类号： G06F11/2071 , G06F3/0601 , G06F2003/0692
摘要： A remote copy system incorporates dynamically modifiable ports on the storage controllers such that those ports can operate either as a control unit link-level facility or as a channel link-level facility. When configured as a channel link-level facility, a primary storage controller can appear as a host processor to a secondary storage controller. The primary storage controller can thereafter initiate multiple request connects (RQC) concurrently for servicing a single I/O request. In this manner, a first available path can be selected and system throughput thus improved since RQCs so not need to be sent serially from path to path looking for an available path.
摘要翻译：远程复制系统在存储控制器上结合动态可修改的端口，使得这些端口可以作为控制单元链路级设施或者作为信道链路级设施来操作。配置为通道链路级设施时，主存储控制器可以作为主处理器显示到辅助存储控制器。主存储控制器此后可以同时启动多个请求连接（RQC），用于维护单个I / O请求。以这种方式，可以选择第一可用路径并因此提高系统吞吐量，因为RQC不需要从寻路可用路径的路径到路径串行发送。

5. 发明授权

US06240467B1 Input/output operation request handling in a multi-host system 失效
标题翻译：多主机系统中的输入/输出操作请求处理
公开(公告)号：US06240467B1
公开(公告)日：2001-05-29
申请号：US09167860
申请日：1998-10-07
申请人： Brent Cameron Beardsley , Joseph Charles Elliott , James Lincoln Iskiyan
发明人： Brent Cameron Beardsley , Joseph Charles Elliott , James Lincoln Iskiyan
IPC分类号： G06F1314
CPC分类号： G06F13/126
摘要： Disclosed is a system for handling an input/output (I/O) operation. A controller, such as a storage controller, receives an I/O operation against an address for an I/O device, such as a volume in a storage system. The controller determines whether there is at least one active I/O operation executing against the I/O device. After determining that there is at least one active I/O operation, the controller determines whether the received I/O operation conflicts with active I/O operations executing against the I/O device. The controller then executes the received I/O operation against the I/O device concurrently with the active I/O operations after determining that the received I/O operation does not conflict with active I/O operations.
摘要翻译：公开了一种用于处理输入/输出（I / O）操作的系统。诸如存储控制器的控制器针对诸如存储系统中的卷的I / O设备的地址接收I / O操作。控制器确定是否至少有一个对I / O设备执行的活动I / O操作。在确定至少有一个活动I / O操作之后，控制器确定接收的I / O操作是否与对I / O设备执行的活动I / O操作冲突。然后，控制器在确定接收到的I / O操作与活动I / O操作不冲突后，与主动I / O操作同时对I / O设备执行接收的I / O操作。

6. 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。

7. 发明授权

US06349350B1 System, method, and program for handling failed connections in an input/output (I/O) system 有权
标题翻译：用于处理输入/输出（I / O）系统中的故障连接的系统，方法和程序
公开(公告)号：US06349350B1
公开(公告)日：2002-02-19
申请号：US09304736
申请日：1999-05-04
申请人： Roger Gregory Hathorn , Bret Wayne Holley , James Lincoln Iskiyan
发明人： Roger Gregory Hathorn , Bret Wayne Holley , James Lincoln Iskiyan
IPC分类号： G06F1300
CPC分类号： G06F11/1443
摘要： Disclosed is a system, method, and program for managing I/O operations transmitted from a computer system to a processing unit. The processing unit manages access to a storage device and executes the I/O operation against the storage device. The processing unit receives indication that a request to connect between the processing unit and the computer system failed. Upon receiving a subsequent I/O operation from the computer system after receiving indication that the connect request failed, the processing unit returns busy to the computer system initiating the subsequent I/O operation in response to receiving indication that the connect request failed. The connect request is retried after returning busy.
摘要翻译：公开了一种用于管理从计算机系统发送到处理单元的I / O操作的系统，方法和程序。处理单元管理对存储设备的访问并对存储设备执行I / O操作。处理单元接收指示处理单元和计算机系统之间的连接请求失败。在接收到连接请求失败的指示之后从计算机系统接收到随后的I / O操作，响应于接收到连接请求失败的指示，处理单元返回繁忙到启动后续I / O操作的计算机系统。返回忙时重新连接请求。

8. 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。

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