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    RAID apparatus, controller of RAID apparatus and write-back control method of the RAID apparatus
    1.
    发明授权
    RAID apparatus, controller of RAID apparatus and write-back control method of the RAID apparatus 有权
    RAID装置，RAID装置的控制器和RAID装置的回写控制方法

    公开(公告)号：US08364893B2

    公开(公告)日：2013-01-29

    申请号：US12179942

    申请日：2008-07-25

    申请人： Hidejirou Daikokuya ,  Mikio Ito ,  Kazuhiko Ikeuchi ,  Chikashi Maeda ,  Hideo Takahashi ,  Yoshihito Konta ,  Norihide Kubota

    发明人： Hidejirou Daikokuya ,  Mikio Ito ,  Kazuhiko Ikeuchi ,  Chikashi Maeda ,  Hideo Takahashi ,  Yoshihito Konta ,  Norihide Kubota

    IPC分类号： G06F12/16

    CPC分类号： G06F12/0804 ,  G06F12/0866 ,  G06F12/123

    摘要： A RAID apparatus includes a plurality of recording devices, a first adaptor connected to a first interface which is connected to a high-level apparatus, a controller for controlling processing of data transmitted by the high-level apparatus, and a second adaptor that connects to a second interface connected to a plurality of recording devices. The controller has a first memory area in which said data are stored, a second memory area used for a write-back of the data in said plurality of recording devices, a write-back information control unit controlling a write-back type of data stored in the first memory area and a usage state of the second memory area, a write-back data determination unit for determination of data to be written-back based on the write-back information, and a write-back execution unit for executing a write-back of the data to be written back on the plurality of recording devices.

    摘要翻译： RAID装置包括多个记录装置，连接到连接到高级装置的第一接口的第一适配器，用于控制由高级装置发送的数据的处理的控制器，以及连接到 连接到多个记录装置的第二接口。 控制器具有存储所述数据的第一存储区域，用于在所述多个记录装置中回写数据的第二存储区域，控制存储的数据的回写类型的回写信息控制单元 在所述第一存储器区域和所述第二存储区域的使用状态中，基于所述写回信息来确定要被写回的数据的写回数据确定单元，以及用于执行写入的写回执行单元 在要记录在多个记录装置上的数据的背面。

    Control method and storage device
    2.
    发明授权
    Control method and storage device 有权
    控制方法和存储设备

    公开(公告)号：US08225136B2

    公开(公告)日：2012-07-17

    申请号：US12480851

    申请日：2009-06-09

    申请人： Atsushi Igashira ,  Hideo Takahashi ,  Yoshihito Konta ,  Norihide Kubota

    发明人： Atsushi Igashira ,  Hideo Takahashi ,  Yoshihito Konta ,  Norihide Kubota

    IPC分类号： G06F11/10

    CPC分类号： G06F11/1076 ,  G06F2211/1059

    摘要： 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.

    摘要翻译： 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。

    Write omission detector, write omission detecting method, and computer product
    9.
    发明授权
    Write omission detector, write omission detecting method, and computer product 有权
    写遗漏检测器，省略检测方法和计算机产品

    公开(公告)号：US07917802B2

    公开(公告)日：2011-03-29

    申请号：US11902772

    申请日：2007-09-25

    申请人： Mikio Ito ,  Hidejirou Daikokuya ,  Kazuhiko Ikeuchi ,  Hideo Takahashi ,  Yoshihito Konta ,  Norihide Kubota

    发明人： Mikio Ito ,  Hidejirou Daikokuya ,  Kazuhiko Ikeuchi ,  Hideo Takahashi ,  Yoshihito Konta ,  Norihide Kubota

    IPC分类号： G06F11/00

    CPC分类号： G11B5/09 ,  G06F11/1612 ,  G11B20/1803 ,  G11B2220/415

    摘要： A device adaptor that controls a disk, wherein a storage area is divided into a plurality of blocks, detects a block that includes a read error. Next, the device adaptor detects a write omission in blocks that are within a predetermined range from the block that includes the read error. To be specific, the device adaptor reads data from the blocks that are in the vicinity of the block that includes the unrecovered read error in a suspect disk. Next, the device adaptor reads from a redundant disk, data of a block that corresponds to the block that includes the unrecovered read error (data of block “B” in an example shown in FIG. 1) and compares the read data to the data read from the suspect disk to detect the write omission.

    摘要翻译： 一种控制盘的设备适配器，其中存储区被分成多个块，检测包括读错误的块。 接下来，设备适配器检测到在来自包括读取错误的块的预定范围内的块中的写入省略。 具体来说，设备适配器从可疑磁盘中包含未恢复的读取错误的块附近的块读取数据。 接下来，设备适配器从冗余磁盘读取与包含未恢复的读取错误的块相对应的块的数据（在图1所示的示例中的块“B”的数据）），并将读取的数据与数据 从可疑磁盘读取以检测写入的遗漏。

    DATA WRITING METHOD
    10.
    发明申请
    DATA WRITING METHOD 有权
    数据写入方法

    公开(公告)号：US20090235114A1

    公开(公告)日：2009-09-17

    申请号：US12369389

    申请日：2009-02-11

    申请人： Atsushi IGASHIRA ,  Hideo Takahashi ,  Yoshihito Konta ,  Norihide Kubota

    发明人： Atsushi IGASHIRA ,  Hideo Takahashi ,  Yoshihito Konta ,  Norihide Kubota

    IPC分类号： G06F11/20

    CPC分类号： G06F11/1435 ,  G06F11/1076 ,  G06F2211/1019 ,  G06F2211/1059

    摘要： According to an aspect of an embodiment, a method for controlling a controller connected to a plurality of storage units storing data, the controller including a cache and a buffer, the method comprising the steps of: storing data in the cache; generating parity data corresponding to the data and storing the parity data in the buffer; writing the data and the parity data into the plurality of the storage units; comparing the parity data stored in the buffer with the parity data written into and read out from at least one of the storage unit; deleting, when the parity data stored in the buffer is different from the parity data read out from the storage unit, the parity data from the buffer; and regenerating parity data from data stored in the cache and rewriting the regenerated parity data into at least one of the storage unit.

    摘要翻译： 根据实施例的一个方面，一种用于控制连接到存储数据的多个存储单元的控制器的方法，所述控制器包括高速缓存和缓冲器，所述方法包括以下步骤：将数据存储在所述高速缓存中; 产生与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; 将数据和奇偶校验数据写入多个存储单元; 将存储在缓冲器中的奇偶校验数据与写入并从存储单元中的至少一个读出的奇偶校验数据进行比较; 当存储在缓冲器中的奇偶校验数据与从存储单元读出的奇偶校验数据不同时，删除来自缓冲器的奇偶校验数据; 以及从存储在所述高速缓存中的数据重新生成奇偶校验数据，并将所述再生的奇偶校验数据重写到所述存储单元中的至少一个中。