When upgrading from Samba 2 to Samba 3, which of the following points should be considered when user information is stored in a LDAP server? (Select TWO correct answers.)

It is essential to fully configure Samba 3 to use the LDAP server before starting the service to prevent inconsistencies or the creation of local user information that would conflict with the LDAP backend.

Samba 3 often supports backward compatibility for password encryption methods used by Samba 2, and a full conversion of all passwords in LDAP is not always a mandatory or primary consideration during the initial upgrade.

Setting the Samba 3 domain SID to match the Samba 2 value using `net setlocalsid` is crucial for preserving domain trust relationships and ensuring clients do not need to rejoin the domain.

While data migration is part of an upgrade, simply dumping and restoring data files is not the direct method for fixing ACLs in the context of an LDAP backend upgrade, which typically handles user and group mapping differently.

Changing file permissions to match group permissions is a generic administrative task, not a specific, primary consideration for an LDAP-backed Samba 2 to Samba 3 upgrade, as permissions are managed via the OS and Samba's user/group mapping to LDAP.