if they are ok with complete downtime you can SAN Copy the quorum drive as well. It's tiny so you can setup your session after both nodes are offline. Windows clustering 2k3 uses disk signature to identify drive letters/cluster resource ..since you are not changing servers but simply swapping LUN, it will not know anything happen. I like to keep host ID the same between source and target array.
HI,  I have two more clarrion arrays to go for the Array refresh project. I can see the goal post as I have 5 more cluster groups to do on one of the arrays. They are a two node and five node windows 2003 cluster. I know I cannot migrate the quorum, so what is the advised method, SAN copy or PPME? I am migrating to a VNX.  Thanks in advance! Admingirl
PPMS vs SAN COPY for windows 2003 clusters