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    • 3. 发明授权
    • Adaptive multitasking for dataset storage
    • 用于数据集存储的自适应多任务
    • US5778393A
    • 1998-07-07
    • US650606
    • 1996-05-20
    • Donald Reynold BleaRonald Maynard KernGregory Edward McBrideDavid Michael Shackelford
    • Donald Reynold BleaRonald Maynard KernGregory Edward McBrideDavid Michael Shackelford
    • G06F3/06G06F11/20G06F17/30
    • G06F11/2082G06F3/0614G06F3/0632G06F3/0689G06F11/2064Y10S707/99956
    • Data is stored in one or more data storage devices, the number of active data storage devices being adaptively adjusted to maximize parallelism while minimizing device overhead. Multiple datasets are first received, these being designated for storage in multiple data storage devices. Next, a first one of the received datasets is stored in a first one of the data storage devices. Concurrently with storage of the first dataset, the following steps are performed: (1) selecting a second received dataset from those remaining to be stored, (2) selecting an available data storage device by employing a predetermined criteria, and (3) beginning storage of the second dataset in the selected data storage device. The predetermined criteria for selecting an available data storage device may involve, for example, selecting an available device based on a "first fit" or a "best fit" scheme. Concurrently with storage of the second dataset, storage of a third dataset starts. Likewise, the process of storing each subsequent dataset commences while the previous dataset is being stored. This technique promotes efficiency, since later-received datasets may be stored in previously used storage devices that have already finished storing earlier datasets. Accordingly, less processing overhead is occupied in activating previously dormant data storage devices.
    • 数据存储在一个或多个数据存储设备中,活动数据存储设备的数量被自适应地调整以最大化并行性,同时最小化设备开销。 首先接收多个数据集,这些数据集被指定用于存储在多个数据存储设备中。 接下来,接收的数据集中的第一个被存储在第一个数据存储装置中。 同时存储第一数据集,执行以下步骤:(1)从剩余的数据集中选择第二个接收到的数据集,(2)通过采用预定准则选择可用数据存储设备;(3)开始存储 的所选数据存储设备中的第二数据集。 用于选择可用数据存储设备的预定标准可以涉及例如基于“第一拟合”或“最佳拟合”方案来选择可用设备。 同时存储第二个数据集,第三个数据集的存储开始。 同样,存储每个后续数据集的过程在存储上一个数据集时开始。 这种技术可以提高效率,因为稍后接收的数据集可能存储在已经完成存储早期数据集的先前使用的存储设备中。 因此,在激活先前的休眠数据存储设备中占用较少的处理开销。
    • 4. 发明授权
    • Management of fixed pages in memory for input/output operations
    • 管理内存中固定页面的输入/输出操作
    • US06260129B1
    • 2001-07-10
    • US09149052
    • 1998-09-08
    • Robert Nelson CrockettRonald Maynard KernGregory Edward McBrideDavid Michael ShackelfordStephen Charles West
    • Robert Nelson CrockettRonald Maynard KernGregory Edward McBrideDavid Michael ShackelfordStephen Charles West
    • G06F1200
    • G06F12/126
    • Disclosed is a system for managing pages in a volatile memory device for data transfer operations between a first storage area and a second storage area. The first storage area is queried to determine a number of data sets to include in a data transfer operation. A number of pages in the volatile memory device needed for the data transfer operation is then determined. A determination is then made as to whether the number of pages needed for the data transfer operation is greater than available fixed pages in a pool of pages. Available fixed pages in the pool are allocated to the data transfer operation after determining that the number of pages needed to process the data transfer operation is less than or equal to the available fixed pages in the pool. Alternatively, after determining that the number of pages needed to process the data transfer operation is greater than the available fixed pages in the pool, all the fixed pages in the pool and additional fixed pages are allocated to the data transfer operation.
    • 公开了一种用于管理易失性存储器装置中的页面的系统,用于在第一存储区域和第二存储区域之间进行数据传送操作。 查询第一个存储区域以确定要包括在数据传输操作中的多个数据集。 然后确定数据传输操作所需的易失性存储器件中的页数。 然后确定数据传输操作所需的页数是否大于页面池中的可用固定页面。 在确定处理数据传输操作所需的页数小于或等于池中可用的固定页面之后,将池中的可用固定页面分配给数据传输操作。 或者,在确定处理数据传输操作所需的页面数量大于池中可用的固定页面之后,池中的所有固定页面和附加固定页面被分配给数据传送操作。
    • 5. 发明授权
    • Method, system, and program for discarding data in a storage system where updates to a primary storage device are shadowed in a secondary storage device
    • 用于丢弃存储系统中的数据的方法,系统和程序,其中主存储设备的更新被遮蔽在辅助存储设备中
    • US06587933B2
    • 2003-07-01
    • US09770895
    • 2001-01-26
    • Robert Nelson CrockettWilliam Frank MickaDavid Michael Shackelford
    • Robert Nelson CrockettWilliam Frank MickaDavid Michael Shackelford
    • G06F1200
    • G06F11/2071G06F3/0608G06F3/0644G06F3/0652G06F3/0683G06F11/2064G06F11/2069
    • Provided is a method, system, and program for releasing storage space in a first and second storage devices. Updates to the first storage device are copied to the second storage device to provide secondary storage for the updates. A first and second tables map data sets to addresses in the first and second storage devices, respectively. A first command is detected to invalidate data sets in the first table. The addresses in the first table comprise virtual addresses, and a third table provides a mapping of the virtual addresses to physical storage locations in the first storage device. A second command is generated to update the second table to invalidate the data sets in the second storage device invalidated in the first table by the first command. A third command is detected to invalidate the virtual addresses in the third table used by the data sets invalidated in the first table to free the physical storage locations in the first storage device pointed to by the invalidated virtual addresses. A fourth command is generated that is directed to the physical storage locations in the second storage device used by the invalidated data sets.
    • 提供了一种用于释放第一和第二存储设备中的存储空间的方法,系统和程序。 对第一存储设备的更新被复制到第二存储设备以提供用于更新的辅助存储。 第一和第二表分别将数据集映射到第一和第二存储装置中的地址。 检测到第一个命令使第一个表中的数据集无效。 第一表中的地址包括虚拟地址,第三表提供虚拟地址与第一存储设备中物理存储位置的映射。 生成第二命令来更新第二表以使第一存储装置中的第一存储装置中的数据集无效,该第二存储装置在第一表中无效。 检测到第三个命令使第一个表中无效的数据集使用的第三个表中的虚拟地址无效,以释放由无效虚拟地址指向的第一个存储设备中的物理存储位置。 生成第四命令,其指向由无效数据集使用的第二存储设备中的物理存储位置。