Apparatus, system, and method for controlling link status changes
    1.
    发明授权
    Apparatus, system, and method for controlling link status changes 有权
    用于控制链路状态变化的装置,系统和方法

    公开(公告)号:US07756049B2

    公开(公告)日:2010-07-13

    申请号:US10915791

    申请日:2004-08-11

    IPC分类号: H04L12/26 H04L12/54

    摘要: An apparatus, system, and method are provided for controlling link status changes across multiple independent control modules. The apparatus includes a copy services module configured to control multiple link adapters, each configured to establish multiple communication links between a source and a target storage device. The adapter transmits a link status change notification to the copy services module and starts a timer upon transmitting the link status change notification. The copy services module simultaneously processes link status change notifications from a plurality of communication links. The system includes a communications network and a plurality of storage devices having the above described apparatus. The method includes controlling a plurality of link adapters configured to establish multiple communication links between storage devices, transmitting a link status change notification, starting a timer upon transmitting the link status change notification, and simultaneously processing link status change notifications from a plurality of communication links.

    摘要翻译: 提供了一种用于控制跨多个独立控制模块的链路状态变化的装置,系统和方法。 该设备包括配置为控制多个链路适配器的复制服务模块,每个链路适配器被配置为在源与目标存储设备之间建立多个通信链路。 适配器向复制服务模块发送链路状态改变通知,并且在发送链路状态改变通知时启动定时器。 复制服务模块同时处理来自多个通信链路的链路状态改变通知。 该系统包括具有上述装置的通信网络和多个存储装置。 该方法包括:控制多个链路适配器,其被配置为在存储设备之间建立多个通信链路,发送链路状态改变通知,在发送链路状态改变通知时启动定时器,以及同时处理来自多个通信链路的链路状态改变通知 。

    Bandwidth utilization in a PPRC system
    2.
    发明授权
    Bandwidth utilization in a PPRC system 失效
    PPRC系统中的带宽利用率

    公开(公告)号:US07065623B2

    公开(公告)日:2006-06-20

    申请号:US10719536

    申请日:2003-11-20

    IPC分类号: G06F12/00

    摘要: Methods, system and computer program product are provided to improve the efficiency of data transfers in a PPRC environment. A block of data to be transferred is divided into tracks. Each track is allocated to a data mover task control block (TCB) with a master TCB being assigned to supervise the data mover TCBs. The tracks are then transferred from the primary storage controller to the secondary controller in a piped fashion over a link coupling the primary and secondary storage controllers. However, the usage of resources is monitored by a resource management algorithm and, if too many TCBs are being used for a transfer or if the supply of data mover TCBs is exhausted, the transfer is automatically switched to a serial, non-piped transfer with the master TCB serving as the data mover TCB for the remaining tracks. In addition, the various links coupling the primary and secondary storage controllers is monitored to determine which link will provide the fastest transfer. If, during a transfer of tracks over one link, a faster link is identified, the transfer may be switched to the second, faster link.

    摘要翻译: 提供了方法,系统和计算机程序产品,以提高PPRC环境中数据传输的效率。 要传输的数据块被划分为轨道。 每个轨道被分配给数据移动器任务控制块(TCB),其中主TCB被分配以监视数据移动器TCB。 然后,通过连接主存储控制器和辅助存储控制器的链路,将轨道以管道方式从主存储控制器传送到次级控制器。 然而,资源的使用通过资源管理算法进行监控,如果太多的TCB被用于传输,或者如果数据移动器TCB的供应耗尽,则传输将自动切换到串行,非管道传输, 主TCB用作剩余磁道的数据移动器TCB。 此外,监视耦合主存储控制器和辅助存储控制器的各种链路,以确定哪个链路将提供最快的传输。 如果在通过一个链路传送轨道的过程中识别出更快的链路,则可以将传输切换到第二个更快的链路。

    Apparatus and method to provide information from a first information storage and retrieval system to a second information storage and retrieval system
    3.
    发明授权
    Apparatus and method to provide information from a first information storage and retrieval system to a second information storage and retrieval system 失效
    将信息从第一信息存储和检索系统提供给第二信息存储和检索系统的装置和方法

    公开(公告)号:US07249205B2

    公开(公告)日:2007-07-24

    申请号:US10719484

    申请日:2003-11-20

    IPC分类号: G06F3/00 G06F11/00 G06F15/173

    摘要: A method to provide information from a first information storage and retrieval system to a second information storage and retrieval system. Applicants' method provides a first information storage and retrieval system, where that first information storage and retrieval system comprises (N) PPRC adapters and information, and provides a second information storage and retrieval system. The method generates and saves an Established Path Bitmap which recites each of the (N) PPRC adapters, and generates an Available Path Bitmap. If a PPRC adapter is in communication with the secondary information storage and retrieval system, then the method adds that adapter to the Available Path Bitmap. The Established Path Bitmap and the Available Path Bitmap are used for subsequent PPRC operations.

    摘要翻译: 一种从第一信息存储和检索系统向第二信息存储和检索系统提供信息的方法。 申请人的方法提供了第一信息存储和检索系统,其中第一信息存储和检索系统包括(N)个PPRC适配器和信息,并提供第二信息存储和检索系统。 该方法生成并保存了一个已建立的路径位图,该位图会记录(N)个PPRC适配器中的每一个,并生成可用的路径位图。 如果PPRC适配器与辅助信息存储和检索系统通信,则该方法将该适配器添加到可用路径位图。 建立路径位图和可用路径位图用于后续的PPRC操作。