We have a four HP BL460 Gen8 servers acting as a part of Hyper-V Cluster, running Windows Server 2012 R2 Datacenter.
Storage is provided by two node 3PAR StoreServ 7400.
All network and fc connections are managed by HP Virtual Connect.
One of the four nodes crashed during HP SPP upgrade which resulted as non booting OS.
I managed to get the OS alive by running multiple check disks and by manually restoring registry hives from backup via Windows 7 installation media's recovery console.
After the recovery there were still some issues with filesystem. Corrupted, orphaned and missing files here and there.
Now I want to re-install the OS from scratch to make sure everything will work correctly and to avoid any future errors.
What I need to know is that is the best practice to re-install the OS with new computername, or should I drop the current OS to workgroup, re-install it and join the AD domain with same computer name? I've already evicted the node from Hyper-V cluster but the server is still running as a member server on AD.
Any other things I should take into consideration before doing the re-installation?
Thanks in advance!