You can add SCSI controllers to an existing virtual machine by adding hard disks on unused SCSI Bus numbers.

Adding a new hard disk on an unused SCSI bus number automatically creates a new SCSI controller.


Sufficient privileges to edit the virtual machine.


  1. Right-click on a virtual machine and select Edit Settings.
  2. Select the Hardware tab.
  3. Click Add.
  4. Select Hard Disk and click Next.
  5. Proceed through the wizard, selecting options that suit your needs.
  6. In the Advanced Options page > Virtual Device Node section, select an unused SCSI Bus number.
    For example, bus and device numbers 0:0 - 0:15 are used by the initial SCSI controller. The second SCSI controller uses bus and device numbers 1:0 - 1:15.
  7. On the Ready to Complete page, click Finish.


The new hard disk and new SCSI controller are simultaneously created.