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    • 145. 发明授权
    • Storage unit and storage unit subsystem
    • 存储单元和存储单元子系统
    • US6098191A
    • 2000-08-01
    • US327158
    • 1999-06-03
    • Akira YamamotoYasutomo YamamotoManabu KitamuraTakao Satoh
    • Akira YamamotoYasutomo YamamotoManabu KitamuraTakao Satoh
    • G06F12/16G06F3/06G06F11/10G11C29/00
    • G06F11/1076G06F2211/1009
    • An intermediate value derived from old and new data record values or old and new data themselves are sent from a control unit to a disk unit which stores a parity record as information necessary for updating parity. The disk unit reads an old parity record and generates a new value of parity record based on the read old parity and the information received from the control unit. The generated new value is stored in an empty record on the storage medium to which a read/write head is first positioned after the generation of the new value and in which effective data has not been stored. In a disk array system, a time required to update the parity record due to the updating of the data record is reduced and a performance of the storage unit subsystem is improved.
    • 从旧的和新的数据记录值或旧的和新的数据本身导出的中间值从控制单元发送到存储奇偶校验记录的磁盘单元,作为更新奇偶校验所需的信息。 磁盘单元读取旧的奇偶校验记录,并根据读取的旧奇偶校验和从控制单元接收的信息生成奇偶校验记录的新值。 所生成的新值被存储在存储介质上的空记录中,该记录在读/写头首先定位在新值之后并且其中没有存储有效数据。 在磁盘阵列系统中,减少了由于数据记录的更新而更新奇偶校验记录所需的时间,并提高了存储单元子系统的性能。
    • 149. 发明授权
    • Storage system that is connected to external storage
    • 连接到外部存储的存储系统
    • US08312233B2
    • 2012-11-13
    • US12942060
    • 2010-11-09
    • Yasutomo YamamotoKazuhisa FujimotoAkira Yamamoto
    • Yasutomo YamamotoKazuhisa FujimotoAkira Yamamoto
    • G06F12/00G06F13/00G06F13/28
    • G06F3/061G06F3/0635G06F3/0659G06F3/067
    • A first storage system is connected to a second storage system, and an external device within the first storage system is provided to a host as a device of the second storage system. The second storage system includes a cache control section having cache adaptors, each controlling a disk and a cache, a protocol conversion section including protocol adaptors that switch requests from the host to appropriate ones of the cache adaptors, a management adaptor, and an internal network that mutually connects the cache adaptors, the protocol adaptors and the management adaptor. The first storage system being connected to any of the protocol adaptors is connected to the second storage system. The second storage system executes a processing for the external device by the cache control section, or connects to the first storage system through the protocol conversion section without the cache control section executing processing for the external device.
    • 第一存储系统连接到第二存储系统,并且第一存储系统内的外部设备作为第二存储系统的设备被提供给主机。 第二存储系统包括具有高速缓存适配器的高速缓存控制部分,每个高速缓存适配器各自控制磁盘和高速缓存,协议转换部分包括协议适配器,其将来自主机的请求切换到适当的缓存适配器,管理适配器和内部网络 相互连接缓存适配器,协议适配器和管理适配器。 连接到任何协议适配器的第一存储系统连接到第二存储系统。 第二存储系统由高速缓存控制部分执行对外部设备的处理,或者通过协议转换部分连接到第一存储系统,而没有高速缓存控制部分执行用于外部设备的处理。