Mirror Mirror

[Scott Mertens]

With these SATA drives as cheap as they are I am thinking about just
purchasing another 200 GIG HD and setting up a mirror in Linux.


My thinking is that if one drives fails, I can simply break the mirror,
switch SATA hard drive cables - re-boot and away I go.

I am using 
Red Hat Enterprise Linux ES release 4 (Nahant)

Can anyone tel me if this is possible, or do I have my head way up
my ???  Is this something Linux can do out of the box, or is there some
add-on's I need to accomplish.

Thanks