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    • 1. 发明专利
    • Disk array device and reserve release control method for same disk array device
    • 磁盘阵列设备和相同磁盘阵列设备的保留释放控制方法
    • JP2005301638A
    • 2005-10-27
    • JP2004116360
    • 2004-04-12
    • Hitachi Ltd株式会社日立製作所
    • GOTO YOICHIIDO KENJIUCHIUMI KATSUHIRO
    • G06F3/06G06F12/00
    • G06F3/0637G06F3/0617G06F3/0631G06F3/067
    • PROBLEM TO BE SOLVED: To easily confirm and release a reserve status left in an LDEV by the systemdown of a host etc.
      SOLUTION: A server 1 reserves and exclusively uses an LEDV4. When the systemdown of the server 1 is generated due to any failure (S1), the LEDV4 is put in a reserved state as it is (S2). Thus, it is not possible for the server 2 to perform access to the LDEV4. A system manager reads the exclusive control information 6 in a memory 5 through a management terminal 7. Thus, it is possible to display and confirm the reserve state of each LDEV unit on a terminal picture. A user instructs the release of the reserve state from a management terminal 7 (S3). A disk array device 3 receives the release instruction, and partially rewrites exclusive control information 6, and releases the reserve state.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:通过主机等的系统轻松确认和释放LDEV中保留的状态。解决方案:服务器1保留并专门使用LEDV4。 当由于任何故障而产生服务器1的系统故障时(S1),LEDV4被保持为预留状态(S2)。 因此,服务器2不可能访问LDEV4。 系统管理器通过管理终端7读取存储器5中的排他控制信息6.因此,可以在终端画面上显示并确认每个LDEV单元的保留状态。 用户指示从管理终端7释放保留状态(S3)。 磁盘阵列装置3接收释放指令,并且部分重写专用控制信息6,并释放保留状态。 版权所有(C)2006,JPO&NCIPI
    • 3. 发明专利
    • CONTROL METHOD FOR COMPUTER SYSTEM
    • JPH08221349A
    • 1996-08-30
    • JP3043895
    • 1995-02-20
    • HITACHI LTD
    • NAKANO MASAOYOKOHATA SHIZUOIDO KENJI
    • G06F13/14G06F15/16G06F15/177
    • PURPOSE: To provide a control method without the deviation of processings owing to the difference of the performance of CPUs when the processings are multiplexed in a computer system provided with the plural CPUs, an input/ output controller and plural input/output devices. CONSTITUTION: In the input/output controller 701 connected to the plural CPUs 001-004, IOC control parts 401 and 402 for controlling input and output monitor the input/output device for which the processing is not performed for the fixed period of time after connection is requested to the CPU at all times and prepare and hold the channel path route of the processing of the input/output device. Based on the data, the IOC control parts 401 and 402 select the CPU to be connected. When activation is simultaneously performed from the plural CPUs 001-004, the CPU is selected so as to preferentially perform the processing of the input/output device for which the processing is not performed for the fixed period of time. Thus, this control method without the deviation in the processings of the plural CPUs 001-004 is realized.
    • 7. 发明专利
    • INPUT AND OUTPUT CONTROL METHOD FOR STORAGE
    • JPH08305653A
    • 1996-11-22
    • JP10973895
    • 1995-05-08
    • HITACHI LTD
    • IDO KENJIYOKOHATA SHIZUONAKAYAMA SHINICHI
    • G06F13/12
    • PURPOSE: To prevent inactivation of the channel restart operations by accepting the restart operations against connection requests to each channel with higher preference than the initial start operations through a storage controller that is located between plural channels and a storage device and controls the I/O processing. CONSTITUTION: A computer system includes the storage devices 601 to 603 which are connected to the channels 201 to 204 (CPU 101 to 104) via a storage controller 301 and the paths 201a to 204a respectively. In such a constitution of the system, the controller 301 sends the connection requests to the channels 201 to 204 right after the I/O processing end is reported (within 100μs, for example) or sends the connection requests to all channels having the report factors or a specific channel before the I/O processing end is reported. Then the controller 301 receives the restart operations against the connection requests from the initial start operations carried out through the channels 201 to 204 and earlier than a period when the channel that carried out the I/O processing receives the I/O processing end report and then sends the next initial start operation.