if you use an original Sun-SAN-HBA you will need the "Sun StorEdge SAN 4.4.x Foundation Suite" to access your SAN enviroment. if you use any other HBAs you will need the SAN-drivers from the vendor. go to
sun downloads to get the SSF.
if you are using solaris10 it is included.
to "share" SAN Luns have a look at "man metaset". think about
: you cannot mount UFS without the global-filesystem which would comes with the SunCluster at the same time.
gP