You can add multiple LDAP servers in a single replicated directory to the LDAP servers list, PWM will contact them in fail-over mode.
You can add multiple LDAP directories (each with unique users) as separate LDAP Directory configurations. PWM will search each LDAP directory concurrently and handle duplicates according to the setting at ' LDAP ⇨ LDAP Settings ⇨ Global ⇨ LDAP Duplicate Mode'.
PWM will not synchronize or set passwords or other data across multiple LDAP directories.