* Available since SMB3 (Windows 8 / Windows Server 2012)
* More advanced failover mechanism than Tickle-ACK that is used within CTDB
-==== Witness in Samba ====
+==== Witness - Samba ====
Currently under development in Samba
* PoC implementation available, currently development on hold until new DCE/RPC async infrastructure is available
* when client admin tool is used
* when CTDB (or any other cluster resource control manager) moves resources or IP addresses
-==== Witness in a samba cluster ====
+==== Witness - Failover with SMB3 in a Samba/CTDB cluster ====
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<<<design-ctdb-three-nodes-with-witness.png, width=.95\textwidth>>>