14.5.6 Moving the Undo Log out of the System Tablespace

Although tablespace management typically involves files holding tables and indexes, you can also divide the undo log into separate undo tablespace files. This layout is different from the default configuration where the undo log is part of the system tablespace. See Section 14.13.16, “Storing InnoDB Undo Logs in Separate Tablespaces” for details.