self testing... forever. Apr 14, 2011 10:43:01 GMT 7 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by westcoastguy on Apr 14, 2011 10:43:01 GMT 7 Just recieved my N5500 and loaded the drives and fired it up excitedly to watch it say self testing for 30 mins.I tried rebooting and same result.Opened the case and inspected all connections and reseated.Rebooted and same result.Removed and reseated Dual DOM modules.Rebooted and same result.Noticed switches on DOM modules.Switched both to opposite setting.Rebooted and same result.Switched only one module to opposite setting.SUCCESSFUL BOOT!Powered down, alternated switch settings on DOM modules and powered up server.SUCCESSFUL BOOT!So what gives. is one module bad? What do these switches do?Everything checks out and the raid built successfully. Im just wondering what these switches are and why this didnt boot up out of the box.