Do you disable NetBIOS on all dedicated purpose adapters (iSCSI and Cluster Communications)?
  v3.0 Posted at 20/04/2013 9:54 PM by Tiago Araujo
To improve performance, it's a good idea to disable NetBIOS over TCP/IP on your cluster NIC and iSCSI NIC. NetBIOS isn't used in Server 2008 R2 clusters.
Disable netBIOS Figure: Good example – the NetBIOS is disabled on the dedicated NIC's (iSCSI & Cluster Communications)

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