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    Storage system and control method of storage system
    317.
    发明公开
    Storage system and control method of storage system 审中-公开
    存储系统及控制方法的存储系统

    公开(公告)号：EP2107449A3

    公开(公告)日：2010-09-01

    申请号：EP08171195.4

    申请日：2008-12-10

    Applicant: Hitachi, Ltd.

    Inventor： Watanabe, Yutaka Hitachi, Ltd. ,  Tamura, Keishi Hitachi, Ltd.

    IPC: G06F3/06

    CPC classification number: G06F3/0635 ,  G06F3/0611 ,  G06F3/067 ,  G06F11/2005 ,  G06F11/201

    Abstract: The storage system includes a first storage subsystem having a first logical volume to be accessed by a host computer, and a second storage subsystem connected to the first storage subsystem and having a second logical volume to be mapped to the first logical volume. The first storage subsystem includes a memory having definition information for defining a plurality of logical paths that transfer, to the second logical volume, I/O from the host computer to the first logical volume, and a transfer mode of the I/O to the plurality of logical paths. At least two or more logical paths among the plurality of logical paths are defined as active, and the controller transfers the I/O to the at least two or more logical paths set as active.

    Storage control system, control method for storage control system, port selector, and controller
    318.
    发明公开
    Storage control system, control method for storage control system, port selector, and controller 审中-公开
    用于控制存储控制系统中，端口选择器和控制单元的存储器控​​制系统的方法

    公开(公告)号：EP1881407A3

    公开(公告)日：2010-02-10

    申请号：EP07251011.8

    申请日：2007-03-12

    Applicant: Hitachi, Ltd.

    Inventor： Nakajima, Akio

    IPC: G06F11/14

    CPC classification number: G06F11/1479 ,  G06F11/004 ,  G06F11/201 ,  G06F11/2092

    Abstract: An object of the present invention is to provide a means for detecting a logical command error, and a storage system and its control method that can properly perform error handling, and detection and blockage of a malfunctioning section. A storage control system includes controller units (130A, 130B) for performing processing for data I/O to/from drives (150, 160) in response to a data I/O request from a host device (100), switches (140A, 140B) connecting the controller units (130A, 130B) and the drives (150, 160), and a port selector (300) inserted between the switches (140A, 140B) and the drive (160). The port selector (300), when receiving a command generated based on processing performed by an MPU (131), accesses a target drive (160) if that data that forms a command is valid. Meanwhile, if the port selector (300) detects logical command inconsistency, the port selector (300) forwards that detection result to the MPU (131) via the switch (140A, 140B) and requests retry processing from the MPU (131).

    OFFLOADING DISK-RELATED TASKS FROM RAID ADAPTER
    320.
    发明公开
    OFFLOADING DISK-RELATED TASKS FROM RAID ADAPTER 有权
    从RAID适配器卸载与磁盘相关的任务

    公开(公告)号：EP2013698A1

    公开(公告)日：2009-01-14

    申请号：EP07712315.6

    申请日：2007-02-23

    Applicant: International Business Machines Corporation

    Inventor： ELLIOTT, John, Charles ,  KUBO, Robert, Akira ,  LUCAS, Gregg, Steven

    IPC: G06F3/06

    CPC classification number: G06F3/0652 ,  G06F3/0617 ,  G06F3/0689 ,  G06F11/201 ,  G06F11/2089

    Abstract: A storage system includes a RAID adapter, disk array switches, sub-processors, and hard disk drives (HDDs). A disk-related operation is initiated in the RAID adapter. The RAID adapter dispatches a command to a disk array processor (or sub-processor) in an enclosure for the processor to perform the operation on one or more drives. The adapter may dispatch the command to a processor in a single enclosure through a disk array switch or to processors in multiple enclosures through switches in the upstream enclosures. The adapter is then free to perform other functions. The processor commences the specified operation on one or more selected drives, either sequentially one at a time or sequentially more than one (or all) at a time. Upon completion of the operation, the results are transmitted by the processor and received by the adapter. Thus, by offloading the task to the distributed sub-processors, the burden on the RAID adapter is significantly reduced, system bandwidth usage is reduced, and access to other drives within the enclosure (as well as within other enclosures) may be maintained. Tasks which may be offloaded in such a manner include, but are not limited to, drive firmware updating, drive scrubbing and secure data erasure.

    Abstract translation: 存储系统包括RAID适配器，磁盘阵列交换机，子处理器和硬盘驱动器（HDD）。 磁盘相关操作在RAID适配器中启动。 RAID适配器将命令分派给机箱中的磁盘阵列处理器（或子处理器），以供处理器在一个或多个驱动器上执行操作。 适配器可以通过磁盘阵列交换机将命令发送到单个机箱中的处理器，或通过上游机箱中的交换机将命令发送到多个机箱中的处理器。 适配器可以自由执行其他功能。 处理器在一个或多个选定的驱动器上开始指定的操作，或者一次一个或者一次按顺序多于一个（或全部）。 操作完成后，结果由处理器发送并由适配器接收。 因此，通过将任务卸载到分布式子处理器上，RAID适配器的负担将大大降低，系统带宽使用率将降低，并且可以保留对机箱内的其他驱动器（以及其他机箱内）的访问。 可以以这种方式卸载的任务包括但不限于驱动器固件更新，驱动器清理和安全数据擦除。

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