Hi, Do you have a foreign view tab when you are in the H730 bios? If you do you should be able to use ctrl+N to get to that screen, highlight the controller, press F2 and go to foreign config and have the option to clear the foreign config.
I recently purchased a Poweredge T630 server computer configured with a PERC H730 controller and two 1TB (raid 1) SATA drives. Since the H730 controller is compatible with non-dell certified drives, I purchased 2 WD red label drives to add more storage space.  The problem I have is that the H730 controller detects one of the 2 WD drives as a "foreign" drive.  Under the "Available tasks", I only see two options, "Blink" and "Unblink".  Unlike other WD hard drive, the controller doesn't even allow me an option to convert to RAID capable disk.  This only happens to one of the two WD drives. The WD drive with "foreign state" is not defected or damaged.  How can I clear the foreign flag  on one of the two WD drives so that I can convert both drives to RAID ready state.        
How to clear foreign state hard drive in T630 with PERC H730 Controller