We have a Zen 4.0.1 server that has most of the ZEN stuff installed on a
normal NSS volume (called ZEN). We have clustered that server with another
(via iscsi) and created a cluster volume called TZEN. We would like to
upgrade to Zen 6.5 and put it on TZEN. When we start the Zen install, we
add the virtual zen cluster server to the Server Selection screen and
choose the components to install, but when we get to the File Installation
Location screen the volume ZEN is listed and grayed-out so we can't change it.

How do we go about moving to a clustered volume without deleted and
re-creating our existing 4.0.1 objects?