The Simplified Disaster Recovery (SDR) cannot recover a local computer using the 'Recover This Computer Wizard' from the spanned media in a RDX device. When you select the RDX device and click 'Next' button on 'Which storage devices contains the backup data for this computer?' page, the warning window pops up and you cannot go to the next page even if another spanned media is inserted into the RDX device.

This issue is currently under investigation by Symantec Corporation. For more information please check the following article.

http://www.symantec.com/docs/TECH194369