Windows Server 2008 Failover Clusters: Networking (Part 1) Configure Heartbeat and DNS Settings in a Multi-Site Failover Cluster Appendix A - Cluster.exe Commands 1. Adjust the default heartbeat settings by the following commands: cluster /cluster:<cluster name> /prop SameSubnetDelay=2000 (The default value is 1000 milliseconds, we could set it to 2000 milliseconds.) cluster /cluster:<cluster name> /prop SameSubnetThreshold=10 (The default value is 5, we could set it to 10.) 2. Disable SNP (according to KB http://support.microsoft.com/kb/951037 >) Disable Chimney netsh int tcp set global chimney=disabled Disable RSS: netsh int tcp set global rss=disabled Disable NetDMA: Set the following regsitry value to 0 : HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\EnableTCPA After that, please reboot both nodes to make the change effective. 3. Pease disable “Receive Side Scaling” on advanced tab of network
