New mount point

Hi all,

I am using HP GL580 (x2) + EMC CX3-40 + Red Hat Enterprise 4 + Veritas Cluster
Service 5 +
VxVM + Naviphere 6
A Raid Group with LUN is configured by engineer before. Moreover, rhere are
free SAN disks in EMC,
how can I use these free SAN disk and create a mount point in VCS.
E.g. am I need to create another RAID group (how?), create a new LUN (how?)
how to add to cluster with VxVM and VCS?
how linux recognize the new raid group / Lun?

Thanks for your kindly help!