Very important troubleshooting step in case of cluster failure!

Go to command prompt and run following command: “cluster.exe /gen” This command generates cluster log in the following location: c:\windows\cluster\reports\. If command is not ran – no cluster log generated. Earlier this command ran, better chances it will have useful information to troubleshoot: default size of cluster logging is 100M, which is like 24hr of information before it gets overwritten. I highly recommend increasing the cluster log size to maximum possible 1024M (if you can spare 1G C: drive for that). Great article about the subject is here: http://blogs.technet.com/b/askcore/archive/2010/04/13/understanding-the-cluster-debug-log-in-2008.aspx