| 摘要 |
<p>The present invention provides a system (10) and/or method (100,200,300) for reducing disk space usage and/or improving I/O performance of a computer system (12) through the use of data compression and mapping of data page blocks (22) to reduced size data file blocks (24). The system (10) and/or method (100,200,300) can be used to intercept I/O activity at an interface of a computer system (12) I/O subsystem and then map logical data page blocks (22) to reduced sized physical file data blocks (24) on a one-to-one basis, utilising a suitable data compression algorithm. The system (10) and/or method (100,200,300) also allows data compression to be reversed when reading data from a physical disk storage medium (18) associated with that computer system (12). The system (10) may be implemented as either a device driver (14b) or a module (14a) linked to an I/O module of a computer system (12).</p> |
