All of the servers in a failover group should use the same authentication mechanism and name service. For example, a failover group should not use one server with NIS authentication and other servers with NIS+ authentication.
If a failover group does have different authentication
mechanisms, the servers might fail to obtain their existing
non-smart card mobile (NSCM) sessions if a username contains the
same characters but the case is different, for example,
ps121664
, PS121664
, or
Ps121664
.