I am very confused .WHO can tell me it exactly.3Q
For a VM to be vMotioned (Live migrate) a shared storage is required.
If a VM is presented with RDM in physical mode, then snapshot feature is not available.
If a VM is presented with RDM in virtual mode, then snapshot feature is available.
For vMotion of VM with RDM:
VMware KB: Migrating virtual machines with Raw Device Mappings (RDMs)
Suhas
A CLONE is a exact copy of an existing VM.
You have 2 different type of clone:
1) FULL CLONE - full clone is an independent copy of a VM
2) LINKED CLONE - The existing VM is a parent of the clone. When you clone a VM, the clone is a separate VM that share virtual disks with the parent VM
You can clone a VM if a VM with physical RDM support snapshots (during the clone process a snapshot will be taken)
for vMotion I suggest you to read this KB:
VMware KB: Migrating virtual machines with Raw Device Mappings (RDMs)
is right??