  Not at all. The Lifecycle Controller isn't found within the OS, or even within the drives. It is embedded to the system itself.   All you would need to do is boot back to the Lifecycle controller (F10)  and select OS Deploy and reinstall the OS. There shouldn't be any reason to even have to touch the raid configuration or anything. Just need to reinstall the OS. If it doesn't see the drives then we will need to load the Raid driver. If this occurs let me know, as well as let me know the raid controller installed and I can get you the necessary driver. 
Received Dell Powered T320 Server with windows server 2012 r2 preinstalled. I set up an administrator account. Then when asked for internal domain name I used JAMPRODUCTIONS.local and set it up from there along with another administration account. This server was an upgrade from an older Windows server 2003 and I simply wanted to set it up with the domain used on that computer (also a .local but not JAMPRODUCTIONS). I then attempted to change the incorrect domain to the correct one. As of now I am locked out of all logins (so it seems). When I attempt to login to JAMPRODUCTIONS ADMIN it says password incorrect when I know I'm typing in the correct password.  Nothing had been put on the server of any importance. Only what dell had previously installed would be important. I have the Windows server 2012 R2 disc. Is there a way to start over and do it right with the correct .local internal domain.  Your help is greatly appreciated   Thank You!
NEW Poweredge T320--->Incorrect Internal Domain Name Used--->Currently locked 
out of system as administrator