Disk Data object maxmimums and minimums. Disk data objects are subject to the following maximums and minimums:
Maximum number of tablespaces: 232 (4294967296)
Maximum number of data files per tablespace: 216 (65535)
The theoretical maximum number of extents per tablespace data file is 216 (65525); however, for practical purposes, the recommended maximum number of extents per data file is 28 (32768).
Maximum data file size: The theoretical limit is 64G; however, in MySQL 5.1 (including MySQL Cluster NDB 6.X and 7.X through 7.1), the practical upper limit is 32G. This is equivalent to 32768 extents of 1M each.
The minimum and maximum possible sizes of extents for
tablespace data files are 32K and 2G, respectively. See
CREATE TABLESPACE Syntax, for more information.
Disk Data tables and diskless mode. Use of Disk Data tables is not supported when running the cluster in diskless mode. Beginning with MySQL 5.1.12, it is disallowed altogether. (Bug#20008)