You can add up to 4 IDE devices, up to 60 SCSI devices, and up to 120 SATA devices (4 controllers with 30 devices per controller) to a virtual machine. Any of these devices can be a virtual or physical hard disk or DVD or CD-ROM drive. By default, a floppy drive is not connected when a virtual machine powers on.
A virtual machine can read data from a DVD disc. Workstation Pro does not support playing DVD movies in a virtual machine. You might be able to play a movie if you use a DVD player application that does not require video overlay support in the video card.