EMS backup and recovery function includes log backup , log restore, alarm
backup , alarm restore, Device Name backup , Device Name restore, ONU name
backup, ONU name restore .
EMS configuration information, such as added device node, device port id name,
user name and so on, is saved in EMS database file. In order to configurations not
to be lost when system is abnormal, users can backup database regular intervals. Users
have access to past configuration information via restoring database in case of software
upgrade, operation system installation, system error or management server change.