7.6.1. Using Symbolic Links
You can move tables and databases from the database directory to
other locations and replace them with symbolic links to the new
locations. You might want to do this, for example, to move a
database to a file system with more free space or increase the
speed of your system by spreading your tables to different disk.
The recommended way to do this is simply to symlink databases to
a different disk. Symlink tables only as a last resort.