Multiple control system for disk storage and method for realizing same
    2.
    发明授权
    Multiple control system for disk storage and method for realizing same 失效
    用于磁盘存储的多重控制系统及其实现方法

    公开(公告)号:US4807180A

    公开(公告)日:1989-02-21

    申请号:US932027

    申请日:1986-11-18

    摘要: When a disk controller receiving an access from a host computer to a disk device is connected with a disk connection device, if a relevant disk is used by another disk controller, positioning data for seek, set file mask and set sector are queued in a common memory. When the relevant disk becomes free, the disk controller reads the queued information and requires the disk device for positioning. A request of a reconnection with the host computer is issued from the disk controller informed by the disk unit, which has finished positioning at the position specified by the positioning data, search of an aimed record and a read/write operation of transmitted data are effected without any new intervening of an access program of the host computer.

    摘要翻译: 当接收到从主机到磁盘设备的访问的磁盘控制器与磁盘连接装置连接时,如果相关的磁盘被另一个磁盘控制器使用,则搜索,设置文件掩码和设置扇区的定位数据被排队在共同的 记忆。 当相关磁盘空闲时,磁盘控制器读取排队的信息,并要求磁盘设备进行定位。 通过盘单元从盘单元发出与主计算机重新连接的请求,该盘单元已经在由定位数据指定的位置完成定位,搜索目标记录和发送数据的读/写操作 没有任何新的干预主机的访问程序。

    Rotating storage track format emulation
    3.
    发明授权
    Rotating storage track format emulation 失效
    旋转存储轨道格式仿真

    公开(公告)号:US5315451A

    公开(公告)日:1994-05-24

    申请号:US755189

    申请日:1991-09-05

    CPC分类号: G11B20/1262 G11B19/04

    摘要: A method of emulating an original record format for a new rotating storage device, including the steps of;(a) determining an original angular position (.alpha.) of a record according to a first recording format;(b) determining a desirable angular position (.beta.) for recording according to a second recording format having a higher recording density than that of the first recording format;(c) subtracting the desirable angular position from the original angular position to obtain a difference between the angles (.alpha.-.beta.); and(d) incrementing a gap length immediately before the data field of the record when the angular position exceeds a value corresponding to one unit of segment.

    摘要翻译: 一种用于模拟新的旋转存储设备的原始记录格式的方法,包括以下步骤: (a)根据第一记录格式确定记录的原始角位置(α); (b)根据具有比第一记录格式的记录密度更高的记录密度的第二记录格式确定用于记录的期望的角位置(β); (c)从原始角位置减去所需的角位置以获得角度之间的差(α-β); 以及(d)当角位置超过对应于一个单位单位的值时,立即增加记录数据区之前的间隙长度。

    Error recovery method and apparatus
    6.
    发明授权
    Error recovery method and apparatus 失效
    错误恢复方法和装置

    公开(公告)号:US4688221A

    公开(公告)日:1987-08-18

    申请号:US683612

    申请日:1984-12-19

    IPC分类号: G06F3/06 G06F11/14 G11C29/00

    CPC分类号: G06F11/141

    摘要: There is disclosed an error recovery apparatus and method for a data processing system having (1) a peripheral unit, for instance, a magnetic disc unit, for storing data in a plurality of blocks each having a unique address, (2) a main memory for storing data read from the peripheral units, and (3) a controller for controlling the transfer of the data blocks from the peripheral unit to the main memory by execution of a single channel command word (CCW) chain. When an uncorrectable error occurs in the transfer of a second or subsequent data block of the plurality of data blocks (not the first data block), the processor produces a new CCW chain to re-read the data block in error in addition to all the data blocks subsequent to the data blocking error and store these data blocks in the memory under the control of the new CCW chain.

    摘要翻译: 公开了一种用于数据处理系统的错误恢复装置和方法,其具有(1)外围单元,例如磁盘单元,用于将数据存储在每个具有唯一地址的多个块中,(2)主存储器 用于存储从外围单元读取的数据,以及(3)控制器,用于通过执行单个通道命令字(CCW)链来控制从外围单元向主存储器传送数据块。 当在多个数据块(而不是第一数据块)的第二个或后续数据块的传送中发生不可校正的错误时,处理器产生一个新的CCW链,以便除了所有的 在数据阻塞错误之后的数据块,并在新CCW链的控制下将这些数据块存储在存储器中。

    Control system for interruption long data transfers between a disk unit
or disk coche and main memory to execute input/output instructions
    7.
    发明授权
    Control system for interruption long data transfers between a disk unit or disk coche and main memory to execute input/output instructions 失效
    控制系统,用于在磁盘单元或磁盘总线与主存储器之间中断长数据传输以执行输入/输出指令

    公开(公告)号:US4819203A

    公开(公告)日:1989-04-04

    申请号:US38704

    申请日:1987-04-15

    CPC分类号: G06F12/0866 G06F12/0862

    摘要: A control system for a disk cache memory is disposed between a main memory unit and a disk unit for storing a record of data from the disk unit. The control system is designed such that when an input/output instruction is issued from a CPU while data loading is being performed from the disk unit to the cache memory, it interrupts the data loading once so that an input/output instruction from the CPU can be executed, thereby considerably reducing the time of wait for execution of the input/output instruction.

    摘要翻译: 用于盘缓存存储器的控制系统设置在主存储器单元和盘单元之间,用于存储来自盘单元的数据记录。 控制系统的设计使得当从盘单元执行数据加载到高速缓冲存储器时,当从CPU发出输入/输出指令时,它中断数据加载一次,以便来自CPU的输入/输出指令可以 从而大大减少了等待输入/输出指令执行的时间。

    Method and system for concurrent data transfer disk cache system
    8.
    发明授权
    Method and system for concurrent data transfer disk cache system 失效
    并发数据传输磁盘缓存系统的方法和系统

    公开(公告)号:US4800483A

    公开(公告)日:1989-01-24

    申请号:US56355

    申请日:1987-05-28

    摘要: The present invention relates to a computer system having a disk cache unit between a disk unit and the main storage unit. Ordinarily, the data transfer processing is carried out between the disk unit and the disk cache unit and between the disk cache unit and the main storage unit in this case under control of a director. The present invention is characterized by enabling these two data transfer operations to be executed in parallel and to prevent the director from becoming the bottleneck of the processing due to the concentrated processing requests. For this purpose, the present invention provides for a data transfer between the disk cache unit and a disk unit while a data transfer is taking place between the main storage unit and the disk cache unit.

    摘要翻译: 本发明涉及一种在盘单元和主存储单元之间具有盘缓存单元的计算机系统。 通常,在这种情况下,在导向器的控制下,在盘单元和盘高速缓存单元之间以及盘缓存单元和主存储单元之间执行数据传送处理。 本发明的特征在于能够并行地执行这两个数据传送操作,并且防止由于集中的处理请求引导器成为处理的瓶颈。 为此,本发明提供了在主存储单元和盘高速缓存单元之间进行数据传输的同时在盘缓存单元和盘单元之间的数据传送。

    Method of changing the track and recording data
    9.
    发明授权
    Method of changing the track and recording data 失效
    更改跟踪和记录数据的方法

    公开(公告)号:US5179684A

    公开(公告)日:1993-01-12

    申请号:US394537

    申请日:1989-08-16

    摘要: An external memory device subsystem and a data recording device, which issue a command specifying a plurality of tracks (surfaces) in a rotary type memory device prior to a read or write instruction being issued from the data processing unit of higher rank to the rotary type memory device through a control unit; selects sequentially the plurality of individual tracks (surfaces) previously specified when executing a read or write command after the receipt of the command; and in this way can read/write continuously without wait time interruptions when data is discontinuous.

    摘要翻译: 一种外部存储器件子系统和数据记录装置,其在从具有更高级别的数据处理单元向旋转型发出读取或写入指令之前发出指定旋转型存储器件中的多个轨道(表面)的命令 存储设备通过控制单元; 在接收到命令之后执行读或写命令时,依次选择预先指定的多个单独的轨道(曲面); 并且以这种方式可以在数据不连续时连续读/写等待时间中断。

    Method of changing the track and recording data
    10.
    发明授权
    Method of changing the track and recording data 失效
    更改轨道和记录数据的方法

    公开(公告)号:US5325506A

    公开(公告)日:1994-06-28

    申请号:US948513

    申请日:1992-09-22

    摘要: An external memory device subsystem and a data recording device, which issue a command specifying previously a plurality of tracks in a rotary type memory device prior to a read or write instruction issued from the data processing unit of higher rank to the rotary type memory device through a control unit; select continuously the plurality of tracks previously specified, at executing a read or write command after the execution of the command; and in this way can read/write continuously without wait time for rotation a plurality of tracks distant from each other within the same cylinder.

    摘要翻译: 一种外部存储器件子系统和数据记录装置,其在从旋转式存储装置的较高等级的数据处理单元发出的读取或写入指令之前发出在旋转型存储装置中预先指定多个轨迹的命令, 一个控制单元; 在执行命令后执行读或写命令,连续选择先前指定的多个轨道; 并且以这种方式可以连续读/写,而无需等待时间旋转在同一气缸内彼此远离的多个轨道。