You configure virtual SCSI controllers on your virtual machines to attach virtual disks and RDMs to.

The choice of SCSI controller does not affect whether your virtual disk is an IDE or SCSI disk. The IDE adapter is always ATAPI. The default for your guest operating system is already selected. Older guest operating systems default to the BusLogic adapter.

If you create an LSI Logic virtual machine and add a virtual disk that uses BusLogic adapters, the virtual machine boots from the BusLogic adapters disk. LSI Logic SAS is available only for virtual machines with hardware version 7 or later. Disks with snapshots might not experience performance gains when used on LSI Logic SAS, VMware Paravirtual, and LSI Logic Parallel adapters.

Caution: Changing the SCSI controller type might result in a virtual machine boot failure.


  1. In the vSphere Client inventory, right-click the virtual machine and select Edit Settings.
  2. Click the Hardware tab and select a SCSI controller.
  3. In the SCSI Controller Type pane, click Change.
  4. Select a SCSI controller type and click OK.
  5. Click OK to save your changes.