Chapter 4: Configuration > 4.2 Configuration Variables > 4.2.2 Server Configuration Variables >

V_BUFFER_DATA

This variable determines whether or not Vision indexed file data blocks (as opposed to key blocks) will be held in the memory-resident disk buffers. When it is set to "1" (on, true, yes), the default, both data blocks and key blocks will use the buffers. When set to "0" (off, false, no), only key blocks will use the buffers. Setting this value to "1" will usually improve performance unless very few buffers are being used.

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Note: Holding data blocks in the buffers slightly increases the chances of losing data if a file opened for MASS_UPDATE is not closed properly (power failure, etc.). The default setting of this variable is "1".

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