[Samba] file server

[Ali Bendriss]

Hello,

I am using samba4 as AD DC and file sharing.
I would like to setup a dedicated file server cluster on 2 nodes using ctdb to 
separate the role (authentication/file sharing), and join the cluster to the 
domain.

I am not clear on which version of samba I sould use for the file server 
cluster : latest samba 3 + krb5 or latest samba 4 (using smbd and winbindd) ?
both accept the clustering option --with-cluster-support.

thanks

--
Ali