When i try to add new device it says that this device (scsi controller) cannot be attached to my VM. So i only can use one scsi controller.
When changing scsi bus to physical i get the error "Thin HDD cannot be opened in Multiwriter Modus.
Our default installation for VM HDD is thin provision, i should have taken thick eager.
So i guess i cannot add Storage to both VM's because i have wrong scsi bus and i cannot change scsi bus because i have thin provision.