公开(公告)号：US5835939A

公开(公告)日：1998-11-10

申请号：US630999

申请日：1996-04-12

申请人： Isamu Kurokawa ,  Hisaharu Takeuchi ,  Masahiro Kawaguchi ,  Hisayoshi Kawabata ,  Hiroaki Onuma

发明人： Isamu Kurokawa ,  Hisaharu Takeuchi ,  Masahiro Kawaguchi ,  Hisayoshi Kawabata ,  Hiroaki Onuma

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

CPC分类号： G06F3/0601 ,  G06F3/0607 ,  G06F3/0661 ,  G06F3/0689 ,  G06F12/0866 ,  G06F2003/0697

摘要： In control method and apparatus for data transfer in an external storage subsystem, a disk unit and a control unit interposed between a host channel and a processing unit are provided and data in a variable record length supplied from the host is converted to data in a fixed record length to write it in the disk unit. Final format writing end position information for a logical track and an erase flag indicating whether the erasing is required or not are stored at a portion of a logical track control table which controls a cache memory, for each logical track. In the format writing on the cache memory, the final format writing end position information and the erase flag are updated, and when the data is written into the disk unit from the cache memory by logical track unit, the erase flag is referred and the erasing is performed if it is required. Thus, the area of erasing and the number of times of execution are minimized and the throughput of the data transfer between the processing unit and the rotating storage device is improved.

摘要翻译： 在外部存储子系统中进行数据传送的控制方法和装置中，提供介于主机通道和处理单元之间的盘单元和控制单元，并且将从主机提供的可变记录长度的数据转换为固定的数据 记录长度将其写入磁盘单元。 用于逻辑磁道的最终格式写入结束位置信息和指示擦除是否需要的擦除标志被存储在用于每个逻辑磁道的控制高速缓冲存储器的逻辑磁道控制表的一部分。 在缓存存储器中写入格式时，最终格式写入结束位置信息和擦除标志被更新，并且当通过逻辑磁道单元从高速缓冲存储器将数据写入盘单元时，引用擦除标志并擦除 如果需要，执行。 因此，擦除区域和执行次数被最小化，并且提高了处理单元和旋转存储装置之间的数据传送的吞吐量。

公开(公告)号：US06854023B2

公开(公告)日：2005-02-08

申请号：US10839904

申请日：2004-05-05

申请人： Isamu Kurokawa ,  Hiroaki Nakanishi ,  Masaru Tsukada ,  Hisaharu Takeuchi ,  Masahiro Kawaguchi

发明人： Isamu Kurokawa ,  Hiroaki Nakanishi ,  Masaru Tsukada ,  Hisaharu Takeuchi ,  Masahiro Kawaguchi

IPC分类号： G06F3/00 ,  G06F3/06 ,  G06F12/00 ,  G06F13/00

CPC分类号： G06F3/0611 ,  G06F3/0631 ,  G06F3/0689

摘要： There is provided a data processing system which, from a point of view of increasing process efficiency of the entire data processing system to exhibit a maximum effect, may assign an alias device to a logic device. The data processing system of this invention comprises a host processing device (10) and a storage control device (20) connected thereto via a communication means (50), where the storage control device (20) has a deciding means for deciding, at a time of processing an I/O request of a certain base device, whether there is a need to newly assign an alias device to the base device according to a use situation of a physical device (203). When assignment is decided as necessary, the host processing device (10) is notified of such via the communication means, and the host processing device (10) newly assigns an alias device to the base device when there is the notification from the storage control device (20).

摘要翻译： 提供了一种数据处理系统，从整个数据处理系统的处理效率提高到显示最大效果的角度，可以将别名设备分配给逻辑设备。 本发明的数据处理系统包括经由通信装置（50）连接到其上的主机处理装置（10）和存储控制装置（20），其中存储控制装置（20）具有决定装置，用于在 处理某个基本设备的I / O请求的时间，是否需要根据物理设备的使用情况将归属设备新分配给基站设备（203）。 当根据需要决定分配时，经由通信装置通知主处理装置（10），并且当存在来自存储控制装置的通知时，主机处理装置（10）向基站装置新分配别名装置 （20）。

公开(公告)号：US06754727B2

公开(公告)日：2004-06-22

申请号：US10251495

申请日：2002-09-20

申请人： Isamu Kurokawa ,  Hiroaki Nakanishi ,  Masaru Tsukada ,  Hisaharu Takeuchi ,  Masahiro Kawaguchi

发明人： Isamu Kurokawa ,  Hiroaki Nakanishi ,  Masaru Tsukada ,  Hisaharu Takeuchi ,  Masahiro Kawaguchi

IPC分类号： G06F1300

CPC分类号： G06F3/0611 ,  G06F3/0631 ,  G06F3/0689

摘要： There is provided a data processing system which, from a point of view of increasing process efficiency of the entire data processing system to exhibit a maximum effect, may assign an alias device to a logic device. The data processing system of this invention comprises a host processing device (10) and a storage control device (20) connected thereto via a communication means (50), where the storage control device (20) has a deciding means for deciding, at a time of processing an I/O request of a certain base device, whether there is a need to newly assign an alias device to the base device according to a use situation of a physical device (203). When assignment is decided as necessary, the host processing device (10) is notified of such via the communication means, and the host processing device (10) newly assigns an alias device to the base device when there is the notification from the storage control device (20).

摘要翻译： 提供了一种数据处理系统，从整个数据处理系统的处理效率提高到显示最大效果的角度，可以将别名设备分配给逻辑设备。 本发明的数据处理系统包括经由通信装置（50）连接到其上的主机处理装置（10）和存储控制装置（20），其中存储控制装置（20）具有决定装置，用于在 处理某个基本设备的I / O请求的时间，是否需要根据物理设备的使用情况将归属设备新分配给基站设备（203）。 当根据需要决定分配时，经由通信装置通知主处理装置（10），并且当存在来自存储控制装置的通知时，主机处理装置（10）向基站装置新分配别名装置 （20）。

公开(公告)号：US07035980B2

公开(公告)日：2006-04-25

申请号：US10628784

申请日：2003-07-28

申请人： Isamu Kurokawa ,  Hiroaki Nakanishi ,  Junichi Muto ,  Hisaharu Takeuchi ,  Masahiro Kawaguchi

发明人： Isamu Kurokawa ,  Hiroaki Nakanishi ,  Junichi Muto ,  Hisaharu Takeuchi ,  Masahiro Kawaguchi

IPC分类号： G06F12/00

CPC分类号： G06F12/0862 ,  G06F3/0656 ,  G06F3/0689 ,  G06F12/0866

摘要： A data look-ahead control is provided to realize a high cache hit rate and improves responsiveness in an information processing system. In the data look-ahead control, when it is determined that the current input/output request is an access to a specific database that was the subject of a recent input/output request and whose I/O count exceeds a predetermined value, and it is also determined that a cache memory can be occupied to some extent and that there would be no impact on other input/output requests, data including one or more blocks (logical tracks) larger than a block that is the subject of the current I/O request are loaded to the cache memory.

摘要翻译： 提供数据预测控制以实现高缓存命中率并提高信息处理系统中的响应能力。 在数据预先控制中，当确定当前输入/输出请求是访问作为最近输入/输出请求的主题并且其I / O计数超过预定值的特定数据库时，并且它 还确定高速缓存存储器可以在一定程度上占用，并且不会对其他输入/输出请求产生影响，数据包括大于作为当前I / O的主题的块的一个或多个块（逻辑磁道） O请求被加载到高速缓存中。

公开(公告)号：US20050050274A1

公开(公告)日：2005-03-03

申请号：US10950594

申请日：2004-09-28

申请人： Masanori Araki ,  Masatoshi Baba ,  Yuji Sueoka ,  Isamu Kurokawa ,  Hisaharu Takeuchi

发明人： Masanori Araki ,  Masatoshi Baba ,  Yuji Sueoka ,  Isamu Kurokawa ,  Hisaharu Takeuchi

IPC分类号： G06F12/08 ,  G06F3/06 ,  G06F9/50 ,  G06F12/00

CPC分类号： G06F9/5016

摘要： For using a plurality of files contained in one logical device with a plurality of processing systems, sharing of a data storage unit among the plurality of processing systems is realized without need for a host processing system to check use states of the files in a server storage unit. Information concerning extent (extent range) of an input/output processing request issued by a host processor is stored in a control memory incorporated in a control unit for allowing the control unit to make decision as to overlap of the extents of the input/output processings to thereby effectuate exclusive control on an extent-by-extent basis.

摘要翻译： 为了将包含在一个逻辑设备中的多个文件与多个处理系统一起使用，实现了多个处理系统之中的数据存储单元的共享，而不需要主机处理系统来检查服务器存储器中的文件的使用状态 单元。 关于由主处理器发出的输入/输出处理请求的范围（范围）的信息被存储在控制单元中的控制存储器中，该控制存储器允许控制单元作出与输入/输出处理的区间重叠的决定 从而在一定程度上实现独家控制。

公开(公告)号：US20070061463A1

公开(公告)日：2007-03-15

申请号：US11268525

申请日：2005-11-08

申请人： Shinichi Hiramatsu ,  Isamu Kurokawa ,  Hisaharu Takeuchi ,  Jyunichi Muto ,  Miyuki Yasuda

发明人： Shinichi Hiramatsu ,  Isamu Kurokawa ,  Hisaharu Takeuchi ,  Jyunichi Muto ,  Miyuki Yasuda

IPC分类号： G06F15/173

CPC分类号： G06F13/385 ,  G06F3/061 ,  G06F3/0659 ,  G06F3/0689

摘要： In a data processing system in which a host processing apparatus and a storage subsystem are connected via a channel interface, the present invention makes it possible to expand the number of logical device addresses in excess of the device address limitations of the channel interface, and also enhances the performance of parallel access processing for the same logical device. When an access request is generated for a logical device, the host processing apparatus stores the logical device address to be accessed in a prefix command of a channel command word (CCW) for the access request, sets this CCW in a device information block of a frame which complies with the channel interface, sets a parallel access identifier for identifying a plurality of accesses for the same device in a device address of this frame, and then sends this frame to the storage subsystem.

摘要翻译： 在通过信道接口连接主机处理装置和存储子系统的数据处理系统中，本发明可以扩展超过信道接口的设备地址限制的逻辑设备地址的数量， 增强同一逻辑设备并行访问处理的性能。 当为逻辑设备生成访问请求时，主机处理设备将访问请求的信道命令字（CCW）的前缀命令中存储要访问的逻辑设备地址，将该CCW设置在设备信息块中 符合通道接口的帧，设置用于识别该帧的设备地址中的同一设备的多个接入的并行接入标识符，然后将该帧发送到存储子系统。

公开(公告)号：US06816926B2

公开(公告)日：2004-11-09

申请号：US10612905

申请日：2003-07-07

申请人： Masanori Araki ,  Masatoshi Baba ,  Yuji Sueoka ,  Isamu Kurokawa ,  Hisaharu Takeuchi

发明人： Masanori Araki ,  Masatoshi Baba ,  Yuji Sueoka ,  Isamu Kurokawa ,  Hisaharu Takeuchi

IPC分类号： G06F300

CPC分类号： G06F9/5016

摘要： For using a plurality of files contained in one logical device with a plurality of processing systems, sharing of a data storage unit among the plurality of processing systems is realized without need for a host processing system to check use states of the files in a server storage unit. Information concerning extent (extent range) of an input/output processing request issued by a host processor is stored in a control memory incorporated in a control unit for allowing the control unit to make decision as to overlap of the extents of the input/output processings to thereby effectuate exclusive control on an extent-by-extent basis.

公开(公告)号：US06721823B2

公开(公告)日：2004-04-13

申请号：US10403277

申请日：2003-04-01

申请人： Masanori Araki ,  Masatoshi Baba ,  Yuji Sueoka ,  Isamu Kurokawa ,  Hisaharu Takeuchi

发明人： Masanori Araki ,  Masatoshi Baba ,  Yuji Sueoka ,  Isamu Kurokawa ,  Hisaharu Takeuchi

IPC分类号： G06F300

CPC分类号： G06F9/5016

摘要： For using a plurality of files contained in one logical device with a plurality of processing systems, sharing of a data storage unit among the plurality of processing systems is realized without need for a host processing system to check use states of the files in a server storage unit. Information concerning extent (extent range) of an input/output processing request issued by a host processor is stored in a control memory incorporated in a control unit for allowing the control unit to make decision as to overlap of the extents of the input/output processings to thereby effectuate exclusive control on an extent-by-extent basis.

公开(公告)号：US07373465B2

公开(公告)日：2008-05-13

申请号：US11268525

申请日：2005-11-08

申请人： Shinichi Hiramatsu ,  Isamu Kurokawa ,  Hisaharu Takeuchi ,  Jyunichi Muto ,  Miyuki Yasuda

发明人： Shinichi Hiramatsu ,  Isamu Kurokawa ,  Hisaharu Takeuchi ,  Jyunichi Muto ,  Miyuki Yasuda

IPC分类号： G06F13/00

CPC分类号： G06F13/385 ,  G06F3/061 ,  G06F3/0659 ,  G06F3/0689

摘要： In a data processing system in which a host processing apparatus and a storage subsystem are connected via a channel interface, the present invention makes it possible to expand the number of logical device addresses in excess of the device address limitations of the channel interface, and also enhances the performance of parallel access processing for the same logical device. When an access request is generated for a logical device, the host processing apparatus stores the logical device address to be accessed in a prefix command of a channel command word (CCW) for the access request, sets this CCW in a device information block of a frame which complies with the channel interface, sets a parallel access identifier for identifying a plurality of accesses for the same device in a device address of this frame, and then sends this frame to the storage subsystem.

摘要翻译： 在通过信道接口连接主机处理装置和存储子系统的数据处理系统中，本发明可以扩展超过信道接口的设备地址限制的逻辑设备地址的数量， 增强同一逻辑设备并行访问处理的性能。 当为逻辑设备生成访问请求时，主机处理设备将访问请求的信道命令字（CCW）的前缀命令中存储要访问的逻辑设备地址，将该CCW设置在设备信息块中 符合通道接口的帧，设置用于识别该帧的设备地址中的同一设备的多个接入的并行接入标识符，然后将该帧发送到存储子系统。

公开(公告)号：US07356623B2

公开(公告)日：2008-04-08

申请号：US10950594

申请日：2004-09-28

申请人： Masanori Araki ,  Masatoshi Baba ,  Yuji Sueoka ,  Isamu Kurokawa ,  Hisaharu Takeuchi

发明人： Masanori Araki ,  Masatoshi Baba ,  Yuji Sueoka ,  Isamu Kurokawa ,  Hisaharu Takeuchi

IPC分类号： G06F3/00

CPC分类号： G06F9/5016

摘要： For using a plurality of files contained in one logical device with a plurality of processing systems, sharing of a data storage unit among the plurality of processing systems is realized without need for a host processing system to check use states of the files in a server storage unit. Information concerning extent (extent range) of an input/output processing request issued by a host processor is stored in a control memory incorporated in a control unit for allowing the control unit to make decision as to overlap of the extents of the input/output processings to thereby effectuate exclusive control on an extent-by-extent basis.

摘要翻译： 为了将包含在一个逻辑设备中的多个文件与多个处理系统一起使用，实现了多个处理系统之中的数据存储单元的共享，而不需要主机处理系统来检查服务器存储器中的文件的使用状态 单元。 关于由主处理器发出的输入/输出处理请求的范围（范围）的信息被存储在控制单元中的控制存储器中，该控制存储器允许控制单元作出与输入/输出处理的区间重叠的决定 从而在一定程度上实现独家控制。