Has anyone used postgres w/ an external disk array?  I'm sure a single
postgres instance would work fine with one.
While researching the server clustering techniques of other RDBMS I came
upon Oracle 9's "RAC" clustering.  It appears to use a stand alone array for
the real storage and multiple "head" servers for the actual work.  (This may
be totally inaccurate depending on how late it was when I read this)
What would happen if the same thing was tried with Postgres?