http://blogs.technet.com/fabricem_blogs/archive/2008/09/16/correctifs-recommand-s-pour-wsfc-et-hyper-v-recommended-hotfixes-for-windows-server-2008-based-server-clusters.aspx952247 (http://support.microsoft.com/kb/952247/) The Cluster network name resource and the File Share Witness resource may not come online on a Windows Server 2008 failover cluster node if a disjointed namespace is configured et une mise à jour indispensablefrCommunityServer 2.1 SP1 (Build: 61025.2)