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15.11.3 Disk Data Configuration Parameters »
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15.11.2. Disk Data Storage Requirements

The following items apply to Disk Data storage requirements:

  • Variable-length columns of Disk Data tables take up a fixed amount of space. For each row, this is equal to the space required to store the largest possible value for that column.

    For general information about calculating these values, see Section 11.5, “Data Type Storage Requirements”.

  • In a Disk Data table, the first 256 bytes of a TEXT or BLOB column are stored in memory; only the remainder is stored on disk.

Important

Starting the cluster with the --initial option does not remove Disk Data files. You must remove these manually prior to performing an initial restart of the cluster.