公开(公告)号：US5613066A

公开(公告)日：1997-03-18

申请号：US284003

申请日：1994-08-01

申请人： Hitoshi Matsushima ,  Tohru Kobayashi ,  Tadashi Kumasawa ,  Shoichi Murano ,  Jun Ishikawa ,  Jun Katayama

发明人： Hitoshi Matsushima ,  Tohru Kobayashi ,  Tadashi Kumasawa ,  Shoichi Murano ,  Jun Ishikawa ,  Jun Katayama

IPC分类号： G06F13/10 ,  G06F3/06 ,  G06F11/07 ,  G06F13/12 ,  G06F13/38 ,  G06F11/00

CPC分类号： G06F11/0775 ,  G06F11/0727 ,  G06F11/0745 ,  G06F11/0793 ,  G06F13/122 ,  G06F13/387 ,  G06F3/0601 ,  G06F3/0613 ,  G06F3/0659 ,  G06F3/0674 ,  G06F2003/0691 ,  G06F2003/0692

摘要： A disk controlling apparatus creates sense data indicating the contents of an error and writes it into an intermediate buffer provided within the disk controlling apparatus together with the record normally read when a key portion or a data portion constituting a record is not normally read. The disk controlling apparatus searches the intermediate buffer for desired record, reads and informs an error while taking the sense data into consideration for each record. The disk controlling apparatus stores a write address in a memory at the time of writing data, and when data are normally written the write address is eliminated from the memory, while holding the address when data are not normally written. At the time of reading data, if the address which agrees with the read address is stored in the memory, the disk controlling apparatus reports an error to a host apparatus. The disk controlling apparatus further calculates the busy ratio indicating the rate at which each channel adapter is used for I/O processing, and data is transmitted and received to and from the host apparatus through the channel adapter which has the lowest busy ratio.

摘要翻译： 磁盘控制装置创建指示错误内容的读出数据，并且当构成记录的关键部分或数据部分不被正常读取时，将其写入到盘控制装置内的中间缓冲器以及正常读取的记录。 磁盘控制装置在中间缓冲器中搜索所需的记录，读取并通知错误，同时考虑每个记录的感测数据。 磁盘控制装置在写入数据时将写入地址存储在存储器中，并且当正常地写入数据时，从存储器中消除写入地址，同时在数据未正常写入的同时保持地址。 在读取数据时，如果与读取地址一致的地址存储在存储器中，则磁盘控制装置向主机装置报告错误。 磁盘控制装置还计算指示每个信道适配器用于I / O处理的速率的繁忙率，并且通过具有最低忙比率的信道适配器从主机设备发送和接收数据。

公开(公告)号：US6092216A

公开(公告)日：2000-07-18

申请号：US167650

申请日：1998-10-06

申请人： Tohru Kobayashi ,  Tadashi Kumasawa ,  Shoichi Murano ,  Jun Ishikawa ,  Jun Katayama

发明人： Tohru Kobayashi ,  Tadashi Kumasawa ,  Shoichi Murano ,  Jun Ishikawa ,  Jun Katayama

IPC分类号： G06F13/10 ,  G06F3/06 ,  G06F11/07 ,  G06F13/12 ,  G06F13/38 ,  G06F13/00

CPC分类号： G06F11/0775 ,  G06F11/0727 ,  G06F11/0745 ,  G06F11/0793 ,  G06F13/122 ,  G06F13/387 ,  G06F3/0601 ,  G06F3/0613 ,  G06F3/0659 ,  G06F3/0674 ,  G06F2003/0691 ,  G06F2003/0692

摘要： A disk controlling apparatus creates sense data indicating the contents of an error and writes it into an intermediate buffer provided within the disk controlling apparatus together with the record normally read when a key portion or a data portion constituting a record is not normally read. The disk controlling apparatus searches the intermediate buffer for desired record, reads and informs an error while taking the sense data into consideration for each record. The disk controlling apparatus stores a write address in a memory at the time of writing data, and when data are normally written the write address is eliminated from the memory, while holding the address when data are not normally written. At the time of reading data, if the address which agrees with the read address is stored in the memory, the disk controlling apparatus reports an error to a host apparatus. The disk controlling apparatus further calculates the busy ratio indicating the rate at which each channel adapters is used for I/O processing, and data is transmitted and received to and from the host apparatus through the channel adapter which has the lowest busy ratio.

摘要翻译： 磁盘控制装置创建指示错误内容的读出数据，并且当构成记录的关键部分或数据部分不被正常读取时，将其写入到盘控制装置内的中间缓冲器以及正常读取的记录。 磁盘控制装置在中间缓冲器中搜索所需的记录，读取并通知错误，同时考虑每个记录的感测数据。 磁盘控制装置在写入数据时将写入地址存储在存储器中，并且当正常地写入数据时，从存储器中消除写入地址，同时在数据未正常写入的同时保持地址。 在读取数据时，如果与读取地址一致的地址存储在存储器中，则磁盘控制装置向主机装置报告错误。 磁盘控制装置还计算指示每个信道适配器用于I / O处理的速率的忙比，并且通过具有最低忙比的信道适配器向主机设备发送和接收数据。

公开(公告)号：US6101574A

公开(公告)日：2000-08-08

申请号：US458554

申请日：1999-12-09

申请人： Tadashi Kumasawa ,  Hidehisa Takahashi

发明人： Tadashi Kumasawa ,  Hidehisa Takahashi

IPC分类号： G06F12/16

CPC分类号： G06F12/16

摘要： A disk control unit for writing and reading data to/from at least one disk device on the basis of an input/output request of an upper apparatus includes a volatile cache memory for holding data of the disk device, a non-volatile cache memory and a recording format information table stored in the non-volatile cache memory for holding recording format information of the tracks of the disk device. A write cache control unit refers to the recording format information table so as to enable the upper apparatus to perform a writing process on the volatile cache memory even when corresponding data of the disk device do not exist on the volatile cache memory.

摘要翻译： 一种用于根据上位装置的输入/输出请求向至少一个磁盘装置写入和读取数据的磁盘控制单元包括用于保存磁盘装置的数据的易失性高速缓存存储器，非易失性高速缓冲存储器和 存储在非易失性高速缓冲存储器中的用于保持盘装置的轨道的记录格式信息的记录格式信息表。 写入高速缓存控制单元参考记录格式信息表，以便即使在磁盘装置的相应数据不存在于易失性高速缓冲存储器上时，上位装置也能够对易失性高速缓冲存储器执行写入处理。

公开(公告)号：US6009498A

公开(公告)日：1999-12-28

申请号：US548429

申请日：1995-10-26

申请人： Tadashi Kumasawa ,  Hidehisa Takahashi

发明人： Tadashi Kumasawa ,  Hidehisa Takahashi

IPC分类号： G06F3/06 ,  G06F12/08 ,  G06F12/16

CPC分类号： G06F3/061 ,  G06F12/0866 ,  G06F3/0661 ,  G06F3/0689

摘要： A cache memory holds data of a disk unit on a track unit basis. Recording format information of the track in each disk unit is held in an LTD. For a write request from an upper apparatus, in case of a hit of the cache memory, a write cache control unit finishes a writing process on the cache memory and reports an end of process to the upper apparatus. In case of a mishit of the cache memory, a recording format is analyzed with reference to the LTD and a record position on the track to be developed in the cache memory is recognized, the writing process is finished on the cache memory and an end of process is reported to the upper apparatus.

摘要翻译： 缓存存储器基于轨道单元保存盘单元的数据。 每个磁盘单元中的轨道的记录格式信息被保存在LTD中。 对于来自上级装置的写入请求，在高速缓冲存储器的命中的情况下，写入高速缓存控制单元完成对高速缓存存储器的写入处理，并将处理结束报告给上位装置。 在高速缓存存储器的情况下，参考有​​限公司分析记录格式，并且识别在高速缓冲存储器中要开发的轨道上的记录位置，写入处理在缓存存储器上结束 过程报告给上位机。