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    • 7. 发明申请
    • METHOD, SYSTEM AND COMPUTER PROGRAM PRODUCT FOR MANAGING THE STORAGE OF DATA
    • 用于管理数据存储的方法,系统和计算机程序产品
    • US20080307191A1
    • 2008-12-11
    • US12128388
    • 2008-05-28
    • Geoff LaneSimon WalshBarry D. Whyte
    • Geoff LaneSimon WalshBarry D. Whyte
    • G06F12/06
    • G06F3/0638G06F3/0608G06F3/067
    • The present invention provides for a method, system, and computer program product for managing the storage of data. Data is selectively compressed based on a pre-defined compression policy and metadata is stored for physical storage blocks. A stored compression policy identifies at least one criterion for compression, and physical blocks of data meeting the compression policy are identified. A physical block is selected as a source block for data compression, and one or more physical locations are selected as target locations. Data is read from the source block, compressed, and written to the target locations. Metadata is updated to indicate a mapping between the target locations and the virtual blocks previously mapped to the source block. Extra storage capacity can be freed up until more physical storage is ordered and installed, while more important data, such as recently or frequently accessed data, is retained in an uncompressed and accessible state.
    • 本发明提供了一种用于管理数据存储的方法,系统和计算机程序产品。 基于预定义的压缩策略选择性地压缩数据,并存储用于物理存储块的元数据。 存储的压缩策略标识至少一个用于压缩的标准,并且识别满足压缩策略的数据的物理块。 选择物理块作为数据压缩的源块,并选择一个或多个物理位置作为目标位置。 从源块读取数据,压缩并写入目标位置。 元数据被更新以指示目标位置与先前映射到源块的虚拟块之间的映射。 额外的存储容量可以释放,直到更多的物理存储被订购和安装,而更重要的数据,如最近或经常访问的数据,保持在未压缩和可访问的状态。