(zmrestoreldap) "The LDAP directory is backed up as part of either the full or incremental backup process. All accounts, domains, servers, COS, and other data are backed up. You can restore the LDAP directory without restoring the message server, and restore specific accounts to the LDAP server."
Guess it could also say "see the admin guide, backup section for more details about the disaster recovery process" -don't want to hard code a link that could change but
http://www.zimbra.com/products/documentation.html is probably going to be pretty permanent.)