公开(公告)号：US5694570A

公开(公告)日：1997-12-02

申请号：US376292

申请日：1995-01-23

申请人： Brent Cameron Beardsley ,  Susan Kay Candelaria ,  Joel Harvey Cord ,  Michael Howard Hartung ,  Joseph Smith Hyde ,  John Norbert McCauley, Jr.

发明人： Brent Cameron Beardsley ,  Susan Kay Candelaria ,  Joel Harvey Cord ,  Michael Howard Hartung ,  Joseph Smith Hyde ,  John Norbert McCauley, Jr.

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

CPC分类号： G06F3/0601 ,  G06F12/0866 ,  G06F2003/0691

摘要： The invention teaches a system and method for temporarily buffering data written to a storage system by a host computer. The storage system includes direct access storage devices and a cache. The cache is used as the buffer for both caching and noncaching data records before destaging to a direct access storage device. Upon receipt of a channel program from a host computer containing data for records to be updated, the storage controller determines if the records are currently cached. If the records are not cached, a write miss has occurred. Upon a write miss the storage controller checks an attribute transmitted in the channel program to determine if the records have a regular format. Records having a known, regular format are buffered in cache until destaged by a background process.

摘要翻译： 本发明教导了一种用于临时缓冲由主计算机写入存储系统的数据的系统和方法。 存储系统包括直接访问存储设备和缓存。 缓存用作缓存和非缓存数据记录的缓冲区，然后再次转到直接访问存储设备。 在从包含要更新的记录的数据的主计算机接收到频道节目时，存储控制器确定记录是否被当前缓存。 如果记录未缓存，则发生写入错误。 在写入错误时，存储控制器检查在通道程序中发送的属性，以确定记录是否具有常规格式。 具有已知的常规格式的记录被缓存在缓存中，直到由后台进程去运行。

公开(公告)号：US5815656A

公开(公告)日：1998-09-29

申请号：US949668

申请日：1992-09-23

申请人： Susan Kay Candelaria ,  Michael Howard Hartung ,  Dennis Albert Kukula ,  Kenneth Wayne Lane ,  Vernon John Legvold ,  Guy Eugene Martin ,  John Norbert McCauley, Jr. ,  Carol Santich Michod ,  Mark Albert Reid ,  William Lee Richardson

发明人： Susan Kay Candelaria ,  Michael Howard Hartung ,  Dennis Albert Kukula ,  Kenneth Wayne Lane ,  Vernon John Legvold ,  Guy Eugene Martin ,  John Norbert McCauley, Jr. ,  Carol Santich Michod ,  Mark Albert Reid ,  William Lee Richardson

IPC分类号： G06F3/06 ,  G06F11/14 ,  G06F12/08 ,  G06F11/00

CPC分类号： G06F11/0793 ,  G06F11/0727 ,  G06F11/201 ,  G06F12/0866

摘要： A data processing system executes a plurality of processes in parallel. The processes access shared user records stored in memory serially. One or more data structures are used to track access by processes to the data structures and to the user records. Responsive to a fault occurring in a first parallel process, a signal is given the remaining parallel processes indicating the failure. Responsive to the failure, it is determined if the faulting parallel process had access to one of the data structures. Depending upon the circumstances of access, integrity of the user records may be assumed and the record validated. The data structures themselves can be examined to determine if the contents of memory is reliable. Typically the data structures support use of the memory as a cache.

摘要翻译： 数据处理系统并行地执行多个处理。 这些进程以串行方式访问存储在存储器中的共享用户记录。 一个或多个数据结构用于跟踪对数据结构和用户记录的进程的访问。 响应于在第一并行过程中发生的故障，给出指示故障的剩余并行过程的信号。 响应于失败，确定故障并行过程是否可以访问其中一个数据结构。 根据访问的情况，可以假设用户记录的完整性并且记录被验证。 可以检查数据结构本身以确定存储器的内容是否可靠。 通常，数据结构支持使用内存作为缓存。

公开(公告)号：USRE37364E1

公开(公告)日：2001-09-11

申请号：US08521712

申请日：1995-08-31

申请人： Oded Cohn ,  Michael Howard Hartung ,  William Frank Micka ,  John Norbert McCauley, Jr. ,  Claus William Mikkelsen ,  Kenneth Michael Nagin ,  Yoram Novick ,  Alexander Winokur

发明人： Oded Cohn ,  Michael Howard Hartung ,  William Frank Micka ,  John Norbert McCauley, Jr. ,  Claus William Mikkelsen ,  Kenneth Michael Nagin ,  Yoram Novick ,  Alexander Winokur

IPC分类号： G06F1100

CPC分类号： G06F11/1466 ,  G06F11/1458 ,  G06F11/1461 ,  G06F11/1469

摘要： A method and system are disclosed for enhanced efficiency of backup copying of designated datasets stored within a plurality of storage devices coupled to the data processing system via a storage subsystem control unit having subsystem memory therein. Application execution within the data processing system is temporarily suspended long enough to form a dataset logical-to-physical system address concordance to be utilized to administer copying of the designated dataset. Thereafter, application initiated updates to uncopied portions of the designated datasets are temporarily deferred until sidefiles of the affected portions of the designated datasets are written to subsystem memory. The updates are then written to the storage subsystem. Portions of the designated datasets are then accessed and copied from the storage subsystem on a scheduled or opportunistic basis utilizing selected data retrieval command sequences. A sidefile status query is appended to selected data retrieval command sequences and the presence of data within the subsystem memory is determined without the necessity of additional communications between the data processing system and the storage subsystem. The sidefiles are then accessed and copied. Copied portions of the designated datasets and sidefiles are then copied to alternate storage locations in a backup copy order defined by the address concordance.

摘要翻译： 公开了一种方法和系统，用于通过其中具有子系统存储器的存储子系统控制单元提高存储在与数据处理系统耦合的多个存储设备中的指定数据集的备份复制效率。 数据处理系统内的应用程序执行暂时被暂停，以形成用于管理指定数据集复制的数据集逻辑到物理系统地址一致性。 此后，临时延迟对指定数据集的未封闭部分的应用发起的更新，直到指定数据集的受影响部分的副文件被写入子系统存储器。 然后将更新写入存储子系统。 然后使用所选择的数据检索命令序列，以预定的或机会的方式从存储子系统访问和复制指定数据集的一部分。 辅助文件状态查询被附加到所选择的数据检索命令序列，并确定子系统存储器内的数据的存在，而不需要数据处理系统和存储子系统之间的附加通信。 然后访问和复制文件。 指定数据集和副文件的复制部分然后以地址一致性定义的备份复制顺序复制到备用存储位置。