Had twin Seagate 1TB Barracuda ES drives. Right one failed. Sent back to Seagate and got replacement. DNS-323 sees it OK, knows its serial number, but when it tries to format it before going into RAID 1 mode, HD format fails with error code 107. Pulled drive out and tried on Windows box, which saw it OK and formatted to NTFS OK. Tried again on DNS-323 with no joy. Reset to factory defaults and format only got to 3%. What is Error code 107 and how do I get this to format? I'm using FW 1.08.