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(C) IBM Corp. 1996, 1999

Text Extender: Administration and Programming


Calculating the size of an index

The disk space you need for an index depends on the size and type of data to be indexed, and on the index type. Text documents written with word processors need less space because much of their content is taken up with control characters. As a guideline, reserve disk space for about 0.7 times the size of the documents being indexed, then multiply this by 2 to reserve temporary space for reorganizing the index.

If you have several large indexes, you should store them on separate disk devices, especially if you have concurrent access to the indexes during index update or search.


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