VirtIO-SCSI for SCSI Disks

When creating or updating a template, the attribute below will change all SCSI disks to VirtIO-SCSI:

FEATURES = [
    VIRTIO_SCSI_QUEUES = "1" ]

The major advantages of VirtIO-SCSI over VirtIO include the TRIM support; as well as, SCSI Persistent Reservation support. Performance between VirtIO-SCSI and VirtIO is nearly identical.