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    • 4. 发明申请
    • CONTROL METHOD AND STORAGE DEVICE
    • 控制方法和存储设备
    • US20090313498A1
    • 2009-12-17
    • US12480851
    • 2009-06-09
    • Atsushi IGASHIRAHideo TAKAHASHIYoshihito KONTANorihide KUBOTA
    • Atsushi IGASHIRAHideo TAKAHASHIYoshihito KONTANorihide KUBOTA
    • G06F11/20
    • G06F11/1076G06F2211/1059
    • A control method includes the steps of storing data in a cache; generating parity data corresponding to the data stored in the cache and storing the parity data in a buffer; writing the data stored in the cache and the parity data stored in the buffer into a plurality of the storage units; reading the data and the parity data from the plurality of storage units; checking error over the read out data by using the read out parity data; storing, if an error is detected in the read out data and the read out parity data, data for reading a plurality of data constituting a stripe in each of the plurality of storage units in the buffer, regenerating parity data by using the plurality of data readout from the storage units; and overwriting the plurality of data and the parity data into the plurality of the storage units.
    • 控制方法包括将数据存储在高速缓存中的步骤; 产生与存储在高速缓存中的数据相对应的奇偶校验数据,并将奇偶校验数据存储在缓冲器中; 将存储在高速缓存中的数据和存储在缓冲器中的奇偶校验数据写入多个存储单元; 从多个存储单元读取数据和奇偶校验数据; 通过使用读出的奇偶校验数据检查读出的数据的错误; 存储如果在读出数据和读出的奇偶校验数据中检测到错误的数据,则用于读取在缓冲器中的多个存储单元中的每一个中构成条带的多个数据的数据,通过使用多个数据来再生奇偶校验数据 从存储单元读出; 并将多个数据和奇偶校验数据重写到多个存储单元中。
    • 5. 发明申请
    • DATA READING METHOD
    • 数据读取方法
    • US20090119453A1
    • 2009-05-07
    • US12259664
    • 2008-10-28
    • Atsushi IGASHIRAHideo TAKAHASHIYoshihito KONTANorihide KUBOTA
    • Atsushi IGASHIRAHideo TAKAHASHIYoshihito KONTANorihide KUBOTA
    • G06F12/00
    • G06F11/1088G06F11/1076G06F2211/1057G06F2211/1059
    • According to an aspect of an embodiment, a method for controlling a controller connected to a plurality of storage units which are arranged in a redundant configuration, the controller reading data stored in the plurality of storage units in accordance with requests received from a host computer, the method comprising the steps of: receiving requests to read data successively from one of the storage units from the host computer; reading a part of requested target data from said one of the storage units; reading associated data and parity data stored in other storage units corresponding to other part of requested target data; generating other part of requested target data on the basis of the associated data and the parity data read out from the other storage units; and transmitting the part of the target data and the other part of the target data to the host computer.
    • 根据实施例的一个方面,一种用于控制连接到以冗余配置布置的多个存储单元的控制器的方法,所述控制器根据从主计算机接收的请求读取存储在所述多个存储单元中的数据, 该方法包括以下步骤:从主计算机接收从一个存储单元连续读取数据的请求; 从所述存储单元中的一个读取所请求的目标数据的一部分; 读取存储在与所请求的目标数据的其他部分相对应的其他存储单元中的关联数据和奇偶校验数据; 根据相关联的数据和从其他存储单元读出的奇偶校验数据产生所请求的目标数据的其他部分; 并将目标数据的一部分和目标数据的另一部分发送到主计算机。