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1.发明授权Data transfer control method and apparatus for external storage subsystem adapted to perform erasing after writing 失效外部存储子系统的数据传输控制方法和装置，适于在写入后进行擦除
公开(公告)号：US5835939A
公开(公告)日：1998-11-10
申请号：US630999
申请日：1996-04-12
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。
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公开(公告)号：US06754727B2
公开(公告)日：2004-06-22
申请号：US10251495
申请日：2002-09-20
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）。
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3.发明授权公开(公告)号：US07035980B2
公开(公告)日：2006-04-25
申请号：US10628784
申请日：2003-07-28
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。
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公开(公告)号：US06854023B2
公开(公告)日：2005-02-08
申请号：US10839904
申请日：2004-05-05
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）。
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公开(公告)号：US5457791A
公开(公告)日：1995-10-10
申请号：US57812
申请日：1993-05-07
申请人： Yoshiko Matsumoto , Hisashi Takamatsu , Hisaharu Takeuchi , Yoshihiro Uchiyama , Mamoru Tohchi , Hisayoshi Kawabata , Takao Sato
发明人： Yoshiko Matsumoto , Hisashi Takamatsu , Hisaharu Takeuchi , Yoshihiro Uchiyama , Mamoru Tohchi , Hisayoshi Kawabata , Takao Sato
CPC分类号： G06F11/1076 , G06F11/1008 , G06F3/0601 , G11B20/1883 , G06F2003/0697 , G11B2220/20
摘要： A storage system comprises a disc drive unit including a plurality of logical drive groups each having a plurality of physical drives, and a disc drive control unit for controlling the information transfer between the disc drive unit and the host system. The logical data arriving from the host system is divided into a plurality of continuous data blocks, from which redundant data is prepared for data restoration. The redundant data is added to the continuous data blocks to provide updated logical data. The storage system is controlled in such a way as to write the updated logical data into a plurality of physical drives. In the case where a fault develops in any of the data blocks of the physical drives to be accessed, redundant data is generated from the updated logical data. The data block of the updated logical data of the physical drive corresponding to the data blocks that has not developed a fault, among the data blocks and the redundant data making up the updated logical data, is stored in the physical drive. The data block of the updated logical data of the physical drive corresponding to the data block that has developed a fault is stored in the nonvolatile memory. The completion of writing the updated logical data into the storage system is reported to the host system. In re-updating the updated logical data, the data block of the re-updated logical data corresponding to the data block of the physical drive that has developed a fault is stored in the physical drives. The data block stored in the nonvolatile memory are stored into an alternate block allocated to the physical drives.
摘要翻译： 存储系统包括：盘驱动单元，其包括多个逻辑驱动组，每个逻辑驱动组具有多个物理驱动器;以及盘驱动器控制单元，用于控制盘驱动器单元和主机系统之间的信息传送。 从主机系统到达的逻辑数据被分成多个连续的数据块，准备冗余数据用于数据恢复。 将冗余数据添加到连续数据块以提供更新的逻辑数据。 控制存储系统以将更新后的逻辑数据写入到多个物理驱动器中。 在要访问的物理驱动器的任何数据块中发生故障的情况下，从更新的逻辑数据生成冗余数据。 在数据块和构成更新后的逻辑数据的冗余数据中，对应于未发生故障的数据块的物理驱动器的更新的逻辑数据的数据块被存储在物理驱动器中。 与发生故障的数据块对应的物理驱动器的更新逻辑数据的数据块被存储在非易失性存储器中。 将更新的逻辑数据写入存储系统的完成报告给主机系统。 在重新更新更新的逻辑数据时，对应于已经产生故障的物理驱动器的数据块的重新更新的逻辑数据的数据块被存储在物理驱动器中。 存储在非易失性存储器中的数据块被存储到分配给物理驱动器的替代块中。
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公开(公告)号：US20050050274A1
公开(公告)日：2005-03-03
申请号：US10950594
申请日：2004-09-28
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。
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7.发明授权Data processing system configuring and transmitting access request frames with a field in channel command words to accommendate a plurality of logical device address data therein 有权数据处理系统通过信道命令字中的字段来配置和发送接入请求帧，以在其中建议多个逻辑设备地址数据公开(公告)号：US07373465B2
公开(公告)日：2008-05-13
申请号：US11268525
申请日：2005-11-08
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。
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公开(公告)号：US20050144168A1
公开(公告)日：2005-06-30
申请号：US10765098
申请日：2004-01-28
CPC分类号： G06F7/24 , G06F12/0862
摘要： A storage system, which can execute sort processing of data without affecting online service, is disclosed. A storage control device 12 receives a sort instruction specifying a record group for sorting and a sort key from a host device 1, reads the record group from an external storage device 11 into cache memory 123, and uses the cache memory 123 and a work area secured in the external storage device 11 to execute sort processing of the above record group, and again stores the sorted record group in a prescribed output area within the external storage device 11. When a plurality of sort instructions are received, work areas are allocated automatically without overlapping work areas. When record updates occur during online service, a snapshot of the updated records is taken, and sorting of the snapshot is performed.
摘要翻译： 公开了一种可以在不影响在线服务的情况下执行数据的分类处理的存储系统。 存储控制装置12接收指定用于分类的记录组和来自主机1的分类密钥的分类指令，将记录组从外部存储装置11读取到高速缓冲存储器123中，并使用高速缓冲存储器123和工作区 固定在外部存储装置11中以执行上述记录组的分类处理，并且将排序的记录组再次存储在外部存储装置11内的规定输出区域中。 当接收到多个分类指令时，工作区域被自动分配而不重叠工作区域。 当在线服务中发生记录更新时，将拍摄更新记录的快照，并执行快照排序。
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公开(公告)号：US06567865B1
公开(公告)日：2003-05-20
申请号：US09458705
申请日：1999-12-13
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.
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。
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公开(公告)号：US20070061463A1
公开(公告)日：2007-03-15
申请号：US11268525
申请日：2005-11-08
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。
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