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- MySQL 6.0 Reference Manual
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- MySQL 3.23/4.0/4.1 Manual
- Table of Contents
- 20.12 MySQL Cluster Disk Data Tables
- 20.12.1 Disk Data Objects
- 20.12.2 Disk Data Storage Requirements
- 20.12.3 Disk Data Configuration Parameters
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 10.5, “Data Type Storage Requirements”.
In a Disk Data table, the first 256 bytes of a
TEXTorBLOBcolumn 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.
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