The internal SAS controller is an LSI SAS1064 which supports both SAS and SATA. Never tried a SATA drive in that system. The reason Oracle doesn't support larger drives is the heat issue. I have no doubt the larger drives will work electrically, but keeping them cool might be an issue. If you have a well-ventilated data center you might get away with it. You know the 'ol saying - your mileage may vary..,.