Move a 5.1B cluster to a different EMC SAN

Hi,

We want to move a 5.1B cluster from one EMC SAN to another EMC SAN. Is
it possible to do this without having to reinstall unix?

We know we can duplicate the devices on the new SAN and also copy the
data from the old SAN to the new SAN without using the hosts. The issue
is how and where do we point unix to the new devices?

I expect we should be able to change a few pointers to point to the new
devices and then boot genvmunix and rebuild the kernel.

Is this possible?

TIA

Mark.