Using SSSD is essentially another mechanism to use LDAP. This will bring the account information over (user ID's and groups) and presumably give you the same UID and GIDs for the same user across hosts (which is one of the reasons we don't support winbind -- it doesn't guarantee this). The only real tricks here are: 1. You need to make sure that you install the appropriate sssd-client libraries for your clearcase binary architecture (32-bit or 64-bit). 2. This SUPPLEMENTS, not eliminates the samba configuration. You still need to configure samba as per our instructions.
Thanks a bunch, Brian