[Samba] Mapping resolution.

[Meli Marco]

I have a NT4.0 PDC and samba 3.0.2 member domain, it store SID-UID mapping
in winbind_idmap.tdb file.I have read about a more scalability way to store
these informations in a ldap server.So I can install another member domain
to share the same mapping.
How it is work?Can I found any documentation?
Thanks, Marco.
Marco Meli
GKN SINTER METALS 
via Verdi, 82
I-20063 Cernusco s/naviglio (MI) / Italy
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* Marco.Meli at gknsintermetals.com