The South-Korean Master server is back on-line. Unfortunately the local administrators were not able to recover the configuration from the crashed drives. If you are a repeater owner and connect to Master 4501, you will have to re-configure the following: Static Talkgroups, Timed Subscription, Reflectors, Cluster membership, and custom repeater passwords (ask local administrators or BM Support).
We apologize for the downtime and the inconvenience, and wish you happy QSOs now !