Hello

It looks like the system was configured to use the embedded SATA controller. The cabling for the drives connects to that controller. The embedded controller is SATA only. If you set the controller to RAID mode it enables the S130 RAID controller. I don't think any of our embedded controllers support SAS.

You would need to install a hardware controller and likely change the cabling to use SAS disks. The backplane should support SAS and SATA, but I suggest that you check to make sure before changing everything else out. You can find documentation on the system and controller support pages.

Upgrading from the embedded controller to a hardware controller is not supported. That means we do not have kits available for retail sale with the required parts to perform this upgrade. You should be able to purchase the controller via retail sales, but the cabling and other necessary parts would need to be purchased through resellers or our spare parts department.

http://www.dell.com/support/

http://www.dell.com/storagecontrollermanuals/

Thanks