当从硬盘驱动器读写表和索引数据时，DB 2使用缓冲池来缓存它们。

DB2 USES buffer pools to cache the table and index data as they are being read or written to the hard disk drive.

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这指的是驱动器上可用的缓存数，以及用于读写数据的算法集。

This is the amount of cache available on the drive, as well as the set of algorithms that are used to read and write data.

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