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    Method and system for concurrent access during backup copying of data
    1.
    发明授权
    Method and system for concurrent access during backup copying of data 失效
    在备份数据复制期间并发访问的方法和系统

    公开(公告)号：US5379398A

    公开(公告)日：1995-01-03

    申请号：US871247

    申请日：1992-04-20

    申请人： Oded Cohn ,  Michael H. Hartung ,  John N. McCauley, Jr. ,  William F. Micka ,  Claus W. Mikkelsen ,  Kenneth M. Nagin ,  Yoram Novick ,  Alexander Winokur

    发明人： Oded Cohn ,  Michael H. Hartung ,  John N. McCauley, Jr. ,  William F. Micka ,  Claus W. Mikkelsen ,  Kenneth M. Nagin ,  Yoram Novick ,  Alexander Winokur

    IPC分类号： G06F12/00 ,  G06F11/14 ,  G06F12/02 ,  G06F12/16

    CPC分类号： G06F11/1466

    摘要： A method and system are disclosed for permitting high concurrency of access during backup copying of designated data stored within a storage subsystem which includes multiple storage devices coupled to the data processing system via a storage subsystem control unit having subsystem memory therein. Data within each storage device is accessed utilizing a Unique Control Block (UCB), which identifies a selected storage device, and an associated data retrieval command sequence which identifies the data to be accessed. Portions of the data copied to subsystem memory within the subsystem storage control unit as sidefiles from a first storage device may be accessed utilizing a Unique Control Block (UCB) associated with an alternate storage device by associating a selected data retrieval command sequence therewith which identifies the data as stored within the subsystem memory. In this manner, data from a first storage device may be accessed utilizing an alternate Unique Control Block (UCB), permitting concurrent access of data utilizing the Unique Control Block (UCB) associated with the first storage device.

    摘要翻译： 公开了一种方法和系统，用于在备份复制存储在存储子系统内的指定数据的同时进行访问的高并发性，该存储子系统包括经由其中具有子系统存储器的存储子系统控制单元耦合到数据处理系统的多个存储设备。 使用识别所选存储设备的唯一控制块（UCB）和识别要访问的数据的相关联的数据检索命令序列来访问每个存储设备内的数据。 可以利用与替代存储设备相关联的唯一控制块（UCB）来访问从子系统存储控制单元中复制到子系统存储控制单元中的子系统存储器的部分作为来自第一存储设备的副文件，通过将所选择的数据检索命令序列与其相关联来识别标识 存储在子系统存储器中的数据。 以这种方式，可以使用替代的唯一控制块（UCB）来访问来自第一存储设备的数据，允许使用与第一存储设备相关联的唯一控制块（UCB）并行访问数据。

    Method and system for sidefile status polling in a time zero backup copy process
    2.
    发明授权
    Method and system for sidefile status polling in a time zero backup copy process 失效
    在时间零备份复制过程中进行侧文件状态轮询的方法和系统

    公开(公告)号：US5241669A

    公开(公告)日：1993-08-31

    申请号：US871786

    申请日：1992-04-20

    申请人： Oded Cohn ,  Michael H. Hartung ,  William F. Micka ,  John N. McCauley, Jr. ,  Claus W. Mikkelsen ,  Kenneth M. Nagin

    发明人： Oded Cohn ,  Michael H. Hartung ,  William F. Micka ,  John N. McCauley, Jr. ,  Claus W. Mikkelsen ,  Kenneth M. Nagin

    IPC分类号： G06F3/06 ,  G06F11/00 ,  G06F11/14 ,  G06F12/00 ,  G06F12/16

    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.

    Method and system for non-specific address data retrieval in a data storage subsystem which includes multiple datasets stored at specific addresses
    3.
    发明授权
    Method and system for non-specific address data retrieval in a data storage subsystem which includes multiple datasets stored at specific addresses 失效
    数据存储子系统中非特定地址数据检索的方法和系统，包括存储在特定地址的多个数据集

    公开(公告)号：US5408656A

    公开(公告)日：1995-04-18

    申请号：US949673

    申请日：1992-09-23

    申请人： Oded Cohn ,  Michael H. Hartung ,  William F. Micka ,  Kenneth M. Nagin ,  Yoram Novick ,  Nimrod Rotics ,  Alexander Winokur ,  Efraim Zeidner

    发明人： Oded Cohn ,  Michael H. Hartung ,  William F. Micka ,  Kenneth M. Nagin ,  Yoram Novick ,  Nimrod Rotics ,  Alexander Winokur ,  Efraim Zeidner

    IPC分类号： G06F12/00 ,  G06F11/14 ,  G11B20/10 ,  G11B27/00 ,  G06F15/40 ,  G06F13/00

    CPC分类号： G11B27/002 ,  G06F17/30091 ,  G06F17/30194 ,  G11B20/10 ,  Y10S707/99934

    摘要： A method and system for efficiently accessing desired datasets among multiple datasets which are stored at specific data addresses within multiple storage subsystems which are coupled to a host system via a storage subsystem controller and a data channel. A data request is transmitted from the host system to the storage subsystems via the data channel. The data request specifies non-address attributes for desired datasets, such as boundary addresses for large data extents including many datasets or a request for all datasets modified since the occurrence of a specified event. The data request is then processed at the storage subsystem controller to determine a data address for each dataset within the storage subsystem which possess the desired attributes. Thereafter, the desired datasets are transmitted via the data channel to the host system in association with a specific address for each dataset. A selected status message is transmitted from the storage subsystem controller when no more datasets are located which possess the desired attributes. In this manner, the retrieval of data from a storage subsystem is greatly enhanced.

    摘要翻译： 一种用于有效地访问存储在多个存储子系统内的特定数据地址的多个数据集中的期望数据集的方法和系统，其经由存储子系统控制器和数据信道耦合到主机系统。 数据请求通过数据通道从主机系统发送到存储子系统。 数据请求指定所需数据集的非地址属性，例如大数据扩展区的边界地址，包括许多数据集，或者是自发生指定事件以来修改的所有数据集的请求。 然后在存储子系统控制器处理数据请求，以确定具有所需属性的存储子系统内的每个数据集的数据地址。 此后，期望的数据集通过数据信道与每个数据集的特定地址相关联地发送到主机系统。 当不存在具有所需属性的更多数据集时，从存储子系统控制器发送所选择的状态消息。 以这种方式，从存储子系统检索数据大大增强。

    Peripheral data storage having access controls with error recovery
    5.
    发明授权
    Peripheral data storage having access controls with error recovery 失效
    外设数据存储具有访​​问控制与错误恢复

    公开(公告)号：US4638425A

    公开(公告)日：1987-01-20

    申请号：US800177

    申请日：1985-11-20

    申请人： Michael H. Hartung

    发明人： Michael H. Hartung

    IPC分类号： G06F12/08 ,  G06F13/00

    CPC分类号： G06F12/0866

    摘要： Data supplied to a data storage system by a host processor has one of two use status. A first use status is that the supplied data is to be retentively stored in the data storage system. A second use status is that the supplied data is exempted from the retentive storage requirement. An example of exempted use status is that data only temporarily stored in the data storage system, i.e. is transitory. A second example is data that is being manipulated prior to retentive storage, data that is temporarily volatile. Termination of the exempted use status results in either discard or a retentive storage of the exempted use data. Data integrity controls for the exempted use status data are described. The invention is described for a data storage hierarchy environment having a volatile cache and a magnetic recorder as a backing store. The exempted use data need be stored only in or primarily in the cache while retentive data is primarily stored in the retentive store and selectively in the cache.

    摘要翻译： 由主处理器提供给数据存储系统的数据具有两种使用状态之一。 第一使用状态是将所提供的数据保持存储在数据存储系统中。 第二个使用状态是提供的数据免于保持性存储要求。 豁免使用状态的示例是数据仅临时存储在数据存储系统中，即是暂时的。 第二个例子是在保持性存储之前被操纵的数据，暂时挥发的数据。 终止豁免使用状态导致免除使用数据的丢弃或保持性存储。 对豁免使用状态数据的数据完整性控制进行了说明。 对具有易失性高速缓存和磁记录器作为后备存储器的数据存储层级环境进行了描述。 豁免使用数据只能存储在缓存中或主要存储在缓存中，而保持性数据主要存储在保持性存储器中并且有选择地存储在缓存中。

    Method and apparatus for limiting data occupancy in a cache
    7.
    发明授权
    Method and apparatus for limiting data occupancy in a cache 失效
    用于限制高速缓存中的数据占用的方法和装置

    公开(公告)号：US4466059A

    公开(公告)日：1984-08-14

    申请号：US311738

    申请日：1981-10-15

    申请人： Arlon L. Bastian ,  Marc E. Goldfeder ,  Michael H. Hartung

    发明人： Arlon L. Bastian ,  Marc E. Goldfeder ,  Michael H. Hartung

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

    CPC分类号： G06F12/0866 ,  G06F12/0804

    摘要： A storage hierarchy has a backing store and a caching buffer store. During a series of accesses to the hierarchy by a user, writing data to the hierarchy results in data being selectively removed from the buffer store. Space in said buffer store not being allocated to data being written results in such data being written to the backing store to the exclusion of the buffer store. Removal of data increases the probability of writing data to the backing store. In a preferred implementation, the backing store is one or more disk type data storage apparatus and the buffer store is an electronic random access memory.

    摘要翻译： 存储层次结构具有后备存储和缓存缓冲存储。 在用户对层次结构的一系列访问期间，将数据写入层次结构导致从缓冲存储器中选择性地移除数据。 所述缓冲存储器中未被分配给被写入的数据的空间导致将这些数据写入后备存储器以排除缓冲存储器。 删除数据增加了将数据写入后备存储的可能性。 在优选实现中，后备存储器是一个或多个盘类型数据存储装置，并且缓冲存储器是电子随机存取存储器。