There's some docs about this in the docs. c.f. http://www.postgresql.org/docs/devel/interactive/storage.html http://www.postgresql.org/docs/devel/interactive/st

There's some docs about this in the docs. c.f. http://www.postgresql.org/docs/devel/interactive/storage.html http://www.postgresql.org/docs/devel/interactive/storage.htm...