5.10.2 Design Considerations
Independent disk limitations and usage considerations are as follows:

Only SCSI controller types are supported.
The disk size counts against the organization virtual datacenter quota.
If the class of storage is not specified, the organization virtual datacenter default
is used.
If you delete a virtual machine, the independent disk is first
detached from the virtual machine.
When exporting a virtual machine with an independent disk, the disk
is not tagged to identify
that its source was an independent disk.

The following operations cannot be performed if the
virtual machine currently has an attached independent disk:

Clone vApp.
Copy vApp virtual machine.
Capture vApp to catalog.
Move virtual machine.

Change owner.
When using the elastic virtual datacenter feature and allowing a provider virtual datacenter to span multiple clusters, it
might be necessary
to move an
independent disk to a different datastore to attach it to a virtual machine in a different cluster. To avoid such a move,
use
the locality argument to create a disk in the destination cluster for the virtual machine
(not necessarily on the same datastore).

The scalability
maximum
for this feature is one independent disk per virtual machine up to the maximum number of virtual machines
for vCloud Director.