公开(公告)号：US06611897B2

公开(公告)日：2003-08-26

申请号：US10123404

申请日：2002-04-17

申请人： Tsunetaka Komachiya ,  Yoshihisa Kamo ,  Akira Yamamoto

发明人： Tsunetaka Komachiya ,  Yoshihisa Kamo ,  Akira Yamamoto

IPC分类号： G06F1300

CPC分类号： G06F3/065 ,  G06F3/0613 ,  G06F3/0632 ,  G06F3/0689 ,  G06F2211/1004 ,  G06F2211/1023

摘要： In a disk array subsystem capable of changing the data redundancy method between a duplicating method and a parity method, the load of data transfer occurring at the time of changing the data redundant method is reduced. In the disk array subsystem, since one data of the duplicated data are used for data for the parity data area, the one data secures an area for storing parity prepared from the data. With the arrangement, it is not necessary to transfer the data when the data redundancy method is changed from the duplicating to the parity method and the data transfer load is mitigated.

摘要翻译： 在能够在复制方法和奇偶校验方法之间改变数据冗余方法的磁盘阵列子系统中，减少了在改变数据冗余方法时发生的数据传送的负担。 在磁盘阵列子系统中，由于复制数据的一个数据用于奇偶校验数据区域的数据，所以一个数据保护用于存储从该数据准备的奇偶校验的区域。 通过这种安排，当数据冗余方法从复制改变为奇偶校验方法并且减轻数据传输负载时，不需要传送数据。

公开(公告)号：US06571314B1

公开(公告)日：2003-05-27

申请号：US09254956

申请日：1999-03-22

申请人： Tsunetaka Komachiya ,  Yoshihisa Kamo ,  Akira Yamamoto

发明人： Tsunetaka Komachiya ,  Yoshihisa Kamo ,  Akira Yamamoto

IPC分类号： G06F1200

CPC分类号： G06F11/1076 ,  G06F2211/1004 ,  G06F2211/1059

摘要： In a disk array subsystem capable of changing the data redundancy method between a duplicating method and a parity method, the load of data transfer occurring at the time of changing the data redundant method is reduced. In the disk array subsystem, since one data of the duplicated data are used for data for the parity data area, the one data secures an area for storing parity prepared from the data. With the arrangement, it is not necessary to transfer the data when the data redundancy method is changed from the duplicating to the parity method and the data transfer load is mitigated.

摘要翻译： 在能够在复制方法和奇偶校验方法之间改变数据冗余方法的磁盘阵列子系统中，减少了在改变数据冗余方法时发生的数据传送的负担。 在磁盘阵列子系统中，由于复制数据的一个数据用于奇偶校验数据区域的数据，所以一个数据保护用于存储从该数据准备的奇偶校验的区域。 通过这种安排，当数据冗余方法从复制改变为奇偶校验方法并且缓解数据传输负载时，不需要传送数据。

公开(公告)号：US5682396A

公开(公告)日：1997-10-28

申请号：US827982

申请日：1992-01-29

申请人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

发明人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

IPC分类号： G06F3/06 ,  G06F11/10 ,  G06F12/08 ,  G06F12/16 ,  G06F13/10 ,  G06F11/00

CPC分类号： G06F11/1076 ,  G06F2211/1009

摘要： A control unit in a storage subsystem connected to a central processing unit includes: a plurality of storage units for storing a plurality of record groups, each of which includes at least one data record and at least one parity record for recovering the contents of the data record, a cache memory; apparatus for receiving a write request issued by the central processing unit, the write request having write data to be written into one data record in the storage units; apparatus for storing the write data into the cache memory and reporting the completion of the write request to the central processing unit; apparatus for loading data of a data record and values of a parity record, each of the data of the data record and values of a parity record, each of the data of the data record and the values of the parity record being necessary for generation of updated values of a parity record of a record group including the one data record, from the storage units into the cache memory, after the reporting by the receiving apparatus, if any of the data of the data record and the values of the parity record are not stored in the cache memory; apparatus for generating the updated values of the parity record by using the data of the data record and the values of the parity record stored in the cache memory, and for storing the generated updated values of the parity record into the cache memory; and apparatus for writing the generated updated values of the parity record and the write data from the cache memory into the storage units, thereby performing a process for generation of an updated value of a parity record attendant upon a write request from a processor with no intervention of a processor.

摘要翻译： 连接到中央处理单元的存储子系统中的控制单元包括：多个存储单元，用于存储多个记录组，每个记录组包括至少一个数据记录和用于恢复数据内容的至少一个奇偶校验记录 记录，缓存; 用于接收由中央处理单元发出的写入请求的写入请求，写入请求被写入存储单元中的一个数据记录中; 用于将写入数据存储到高速缓冲存储器中并向中央处理单元报告写入请求的完成的装置; 用于加载数据记录的数据和奇偶校验记录的值的装置，数据记录的每个数据和奇偶校验记录的值，数据记录的每个数据和奇偶校验记录的值是生成 在由接收装置报告之后，如果数据记录的数据和奇偶校验记录的值是否为数据记录中的任何数据，则将包括一个数据记录的记录组的奇偶校验记录的更新值从存储单元更新到高速缓冲存储器 不存储在缓存中; 用于通过使用数据记录的数据和存储在高速缓冲存储器中的奇偶校验记录的值来生成奇偶校验记录的更新值的装置，用于将生成的更新的奇偶校验记录值存储到高速缓冲存储器中; 以及用于将生成的奇偶校验记录的更新值和写入数据从高速缓存存储器写入存储单元的装置，从而执行用于在没有干预的处理器的写入请求时生成伴随的奇偶校验记录的更新值的处理 的处理器。

公开(公告)号：US20050050267A1

公开(公告)日：2005-03-03

申请号：US10945882

申请日：2004-09-22

申请人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

发明人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

IPC分类号： G06F11/10 ,  G06F12/16

CPC分类号： G06F11/1076 ,  G06F2211/1009

摘要： When receiving a write request from a processor, a control unit checks the condition of existence (or the presence/absence) in a cache for information necessary for generation of an updated value of a parity record, receives write data and reports the completion of the write request to the processor. In asynchronism with the write request from the processor, the control unit performs a load process for that information among the information necessary for generation of the updated value of the parity record which may be prepared in asynchronism with the write request from the processor and a write after process for the updated value of the parity record.

公开(公告)号：US5917999A

公开(公告)日：1999-06-29

申请号：US877627

申请日：1997-06-18

申请人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

发明人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

IPC分类号： G06F3/06 ,  G06F11/10 ,  G06F12/08 ,  G06F12/16 ,  G06F13/10 ,  G11C29/00

CPC分类号： G06F11/1076 ,  G06F2211/1009

摘要： When receiving a write request from a processor, a control unit checks the condition of existence (or the presence/absence) in a cache for information necessary for generation of an updated value of a parity record, receives write data and reports the completion of the write request to the processor. In asynchronism with the write request from the processor, the control unit performs a load process for that information among the information necessary for generation of the updated value of the parity record which may be prepared in asynchronism with the write request from the processor and a write after process for the updated value of the parity record.

公开(公告)号：US06874101B2

公开(公告)日：2005-03-29

申请号：US10368553

申请日：2003-02-20

申请人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

发明人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

IPC分类号： G06F11/10 ,  G06F11/00

CPC分类号： G06F11/1076 ,  G06F2211/1009

摘要： When receiving a write request from a processor, a control unit checks the condition of existence (or the presence/absence) in a cache for information necessary for generation of an updated value of a parity record, receives write data and reports the completion of the write request to the processor. In asynchronism with the write request from the processor, the control unit performs a load process for that information among the information necessary for generation of the updated value of the parity record which may be prepared in asynchronism with the write request from the processor and a write after process for the updated value of the parity record.

摘要翻译： 当从处理器接收到写请求时，控制单元检查高速缓存中存在（或存在/不存在）的状况，以产生奇偶校验记录的更新值所需的信息，接收写数据并报告完成 向处理器写请求。 在与来自处理器的写入请求不同步的情况下，控制单元在产生可能与来自处理器的写请求异步准备的奇偶校验记录的更新值所需的信息之间执行该信息的加载处理和写入 后续处理更新的奇偶校验记录值。

公开(公告)号：US07320089B2

公开(公告)日：2008-01-15

申请号：US10945882

申请日：2004-09-22

申请人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

发明人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

IPC分类号： G06F11/00

CPC分类号： G06F11/1076 ,  G06F2211/1009

摘要： When receiving a write request from a processor, a control unit checks the condition of existence (or the presence/absence) in a cache for information necessary for generation of an updated value of a parity record, receives write data and reports the completion of the write request to the processor. In asynchronism with the write request from the processor, the control unit performs a load process for that information among the information necessary for generation of the updated value of the parity record which may be prepared in asynchronism with the write request from the processor and a write after process for the updated value of the parity record.

摘要翻译： 当从处理器接收到写请求时，控制单元检查高速缓存中存在（或存在/不存在）的状况，以产生奇偶校验记录的更新值所需的信息，接收写数据并报告完成 向处理器写请求。 在与来自处理器的写入请求不同步的情况下，控制单元在产生可能与来自处理器的写请求异步准备的奇偶校验记录的更新值所需的信息之间执行该信息的加载处理和写入 后续处理更新的奇偶校验记录值。

公开(公告)号：US06757839B2

公开(公告)日：2004-06-29

申请号：US10319501

申请日：2002-12-16

申请人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

发明人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

IPC分类号： G06F1100

CPC分类号： G06F11/1076 ,  G06F2211/1009

摘要： When receiving a write request from a processor, a control unit checks the condition of existence (or the presence/absence) in a cache for information necessary for generation of an updated value of a parity record, receives write data and reports the completion of the write request to the processor. In asynchronism with the write request from the processor, the control unit performs a load process for that information among the information necessary for generation of the updated value of the parity record which may be prepared in asynchronism with the write request from the processor and a write after process for the updated value of the parity record.

摘要翻译： 当从处理器接收到写请求时，控制单元检查高速缓存中存在（或存在/不存在）的状况，以产生奇偶校验记录的更新值所需的信息，接收写数据并报告完成 向处理器写请求。 在与来自处理器的写入请求不同步的情况下，控制单元在产生可能与来自处理器的写请求异步准备的奇偶校验记录的更新值所需的信息之间执行该信息的加载处理和写入 后续处理更新的奇偶校验记录值。

公开(公告)号：US06532549B2

公开(公告)日：2003-03-11

申请号：US09956792

申请日：2001-09-21

申请人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

发明人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

IPC分类号： G06F1100

CPC分类号： G06F11/1076 ,  G06F2211/1009

摘要： When receiving a write request from a processor, a control unit checks the condition of existence (or the presence/absence) in a cache for information necessary for generation of an updated value of a parity record, receives write data and reports the completion of the write request to the processor. In asynchronism with the write request from the processor, the control unit performs a load process for that information among the information necessary for generation of the updated value of the parity record which may be prepared in asynchronism with the write request from the processor and a write after process for the updated value of the parity record.

公开(公告)号：US06327673B1

公开(公告)日：2001-12-04

申请号：US09642815

申请日：2000-08-22

申请人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

发明人： Akira Yamamoto ,  Hiroyuki Kitajima ,  Kouji Arai ,  Yoshihisa Kamo

IPC分类号： G06F1100

CPC分类号： G06F11/1076 ,  G06F2211/1009

摘要： When receiving a write request from a processor, a control unit checks the condition of existence (or the presence/absence) in a cache for information necessary for generation of an updated value of a parity record, receives write data and reports the completion of the write request to the processor. In asynchronism with the write request from the processor, the control unit performs a load process for that information among the information necessary for generation of the updated value of the parity record which may be prepared in asynchronism with the write request from the processor and a write after process for the updated value of the parity record.

摘要翻译： 当从处理器接收到写请求时，控制单元检查高速缓存中存在（或存在/不存在）的状况，以产生奇偶校验记录的更新值所需的信息，接收写数据并报告完成 向处理器写请求。 在与来自处理器的写入请求不同步的情况下，控制单元在产生可能与来自处理器的写请求异步准备的奇偶校验记录的更新值所需的信息之间执行该信息的加载处理和写入 后续处理更新的奇偶校验记录值。