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    • 2. 发明授权
    • Disk array apparatus
    • 磁盘阵列设备
    • US07774640B2
    • 2010-08-10
    • US12010051
    • 2008-01-18
    • Masayuki TanabeTakuya Okaki
    • Masayuki TanabeTakuya Okaki
    • G06F11/00
    • G06F12/0873G06F11/1666G06F11/2092G06F2212/284
    • A disk array apparatus where, when a failure occurs at a part of a cache memory, a memory area of an I/O processing controller other than the memory area where the failure has occurred is utilized without taking over the whole I/O processing to an I/O processing controller of other system is provided, so that influence of performance degradation can be minimized. In a disk array apparatus including dual cache memories, when a failure occurs at a part of the cache memory, only a memory area where the failure has occurred is closed, and reallocation thereof to another memory area of the same cache memory is conducted to continue an I/O processing.
    • 一种磁盘阵列装置,其中,当高速缓冲存储器的一部分发生故障时,利用除了发生故障的存储区域之外的I / O处理控制器的存储器区域,而不用将整个I / O处理过渡到 提供了其他系统的I / O处理控制器,从而可以使性能下降的影响最小化。 在包括双高速缓冲存储器的磁盘阵列装置中,当在高速缓冲存储器的一部分发生故障时,仅关闭发生故障的存储区域,并且重新分配到同一高速缓冲存储器的另一个存储区域以继续 一个I / O处理。
    • 3. 发明申请
    • Disk array apparatus
    • 磁盘阵列设备
    • US20080263394A1
    • 2008-10-23
    • US12010051
    • 2008-01-18
    • Masayuki TanabeTakuya Okaki
    • Masayuki TanabeTakuya Okaki
    • G06F11/16G06F12/00
    • G06F12/0873G06F11/1666G06F11/2092G06F2212/284
    • A disk array apparatus where, when a failure occurs at a part of a cache memory, a memory area of an I/O processing controller other than the memory area where the failure has occurred is utilized without taking over the whole I/O processing to an I/O processing controller of other system is provided, so that influence of performance degradation can be minimized. In a disk array apparatus including dual cache memories, when a failure occurs at a part of the cache memory, only a memory area where the failure has occurred is closed, and reallocation thereof to another memory area of the same cache memory is conducted to continue an I/O processing.
    • 一种磁盘阵列装置,其中,当高速缓冲存储器的一部分发生故障时,利用除了发生故障的存储区域之外的I / O处理控制器的存储器区域,而不用将整个I / O处理过渡到 提供了其他系统的I / O处理控制器,从而可以使性能下降的影响最小化。 在包括双高速缓冲存储器的磁盘阵列装置中,当在高速缓冲存储器的一部分发生故障时,仅关闭发生故障的存储区域,并且重新分配到同一高速缓冲存储器的另一个存储区域以继续 一个I / O处理。
    • 7. 发明申请
    • Storage system and communications path control method for storage system
    • 存储系统的存储系统和通信路径控制方法
    • US20060075156A1
    • 2006-04-06
    • US10994339
    • 2004-11-23
    • Takuya OkakiHirofumi NakamuraHironori DohiMasayuki Tanabe
    • Takuya OkakiHirofumi NakamuraHironori DohiMasayuki Tanabe
    • G06F3/00
    • G06F11/201
    • The present invention prompts path switching in accordance with the state of occurrence of intermittent failures, and prevents the responsiveness of a storage system from declining, or the like. Here, it is supposed, for example, that a host 1 is performing data communications with a storage device 2 by means of the path P1, and that an intermittent failure such as a communications time-out has occurred in path P1 on a number of occasions equal to or exceeding the prescribed threshold value. In this case, the controller 3 sends back a hardware error response in reply to an access from the host 1. Upon receiving a hardware error response from the storage device 2, the path control section 1B switches from the path P1 where the intermittent failure was detected (the original path) to a path P2 that is functioning normally (the target path), and then re-attempts the access command. In this way, it is possible to prompt the host 1 to switch the communications path in accordance with the state of occurrence of an intermittent failure, and therefore the responsiveness of the storage device 2 can be maintained.
    • 本发明根据间歇性故障的发生状况提示路径切换,防止存储系统的响应性下降等。 这里,例如假设主机1通过路径P 1与存储装置2进行数据通信,并且在路径P 1上发生诸如通信超时的间歇性故障 次数等于或超过规定的阈值。 在这种情况下,控制器3回复来自主机1的访问的硬件错误响应。在从存储设备2接收到硬件错误响应时,路径控制部分1B从路径P 1切换到间歇 检测到正常运行的路径P 2(目标路径)的故障(原始路径),然后重新尝试访问命令。 以这种方式,可以根据间歇性故障的发生状态提示主机1切换通信路径,因此可以保持存储装置2的响应性。