We have 2 domain controller servers with windows 2003 standart edition 32 bit. Duty of these two servers is only to supply dns and domain control. We have also 2 more servers with windows 2003 enterprise edition 32 bit. They are connected to a SAN device which is IBM DS4300 with 3TB storage. (2 TB is full now) We have faced a virus attack and one of our dc is not functioning so we have removed its domain control role. Also we need to format other dc server because it has some problems also. After that we need to format our cluster servers (only disks over servers not the SAN) in order to have well installed windows then we will make them member of our new domain in order to create cluster again. We don't want to lost any data while doing that. My question is which steps should we follow in order to achive that? ps. domain controllers are only for cluster servers there is no other member of this domain.