Generic Linux question

I'm sorry to post this here, i know this is more of a general linux 
question, but does anyone know, off the top of their head, what's the 
quickest way to do a mirror of a hard drive to another drive in the same 
system? I have a linux box with 2 3.4 gig maxtor drives in it and I want 
to make a mirror image of the first drive onto the second... the two 
drives are the same model...

Can anyone help?
Thanks again and sorry for posting to the wrong list.
Marc