What can prevent a successful migration with VMotion?

A.
network cards located in different server slots

B.
a physical CD-ROM that is connected from the virtual machine

C.
different CPU clock speeds

D.
one of the virtual disks that is a mapped SAN LUN

Explanation:

Basic System Administration GuideMigrating Virtual Machines :Migration Wizard Before you begin, disconnect any peripheral devices connected to thevirtual machine. If the virtual machine is using a physical device onthe source host, that device will not be accessible on the destinationhost. This is an incompatibility that will prevent use of VMotion. For example, if the virtual machine is reading from a CD-ROM drive on the source host, it cannot access that drive from the destination host.