You can use commodity drives attached via Serial-Attached SCSI (SAS), Serial ATA (SATA), or USB. Storage layers that abstract the physical disks are not compatible with Storage Spaces. This includes VHDs and pass-through disks in a virtual machine, and storage subsystems that layer a RAID implementation on top of the physical disks. iSCSI and Fibre Channel controllers are not supported by Storage Spaces.


RAID adapters, if used, must be in non-RAID mode with all RAID functionality disabled. Such adapters must not abstract the physical disks, cache data, or obscure any attached devices including enclosure services provided by attached just-a-bunch-of-disks (JBOD) devices. Storage Spaces is compatible only with RAID adapters that support completely disabling all RAID functionality.


We recommend use SAS device in  our DataON Box. 



Ref: http://social.technet.microsoft.com/wiki/contents/articles/11382.storage-spaces-frequently-asked-questions-faq.aspx#What_types_of_drives_can_I_use_with_Storage_Spaces