In Windows Server 2003 Cluster, it will be in C:\windows\cluster
In case of Cluster Logs in Windows Server 2008
C:\windows\system32\winevt\logs\clusterLog.etl
http://sqlbuzz.wordpress.com/2012/02/06/cluster-logs-in-windows-server-20082008r2/
Troubleshooting a Windows Server Cluster
http://msdn.microsoft.com/en-us/library/aa949696%28v=bts.20%29.aspx
Thanks, Rama Udaya.K (http://rama38udaya.wordpress.com) ---------------------------------------- Please remember to mark the replies as answers if they help and UN-mark them if they provide no help,Vote if they gives you information.