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Kakao also revealed today (19th) why the recovery work took a long time after the fire.

He said there was no training in case of a power outage, and he had backed up the server somewhere else in case of such a situation, but couldn't get it to work right away after the accident.



Reporter Jeong Hye-jin will tell you the details.



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The fire that started with one battery caused large-scale failure of Kakao.



He explained why Kakao was vulnerable to crisis response as follows.

[Hong Eun-taek / Kakao



CEO: It seems that our various responses did not assume the experience of 'shutting down' the entire data center, and there was an error in our judgment in that regard.]



There was training in preparation, but there was no training that assumed that the data center itself would stop due to a power cut, etc.



Global companies have long had response manuals that assume the worst case scenario, such as fire or power cut.



[Norah Jones / Netflix Senior Engineer (2017): Netflix regularly conducts 'chaos experiment' training assuming situations such as server outage or connection failure.]



The reason for the delayed recovery was also absurd.



The data on the 32,000 main servers was backed up to a server in another area in case of a disaster, but to operate these secondary servers, you have to turn on a kind of switch called a work tool, but it didn't work right away because it was inside the Pangyo Center. .



In the end, it took a long time to manually restore tens of thousands of servers.



[Lim Jong-in / Distinguished Professor, Graduate School of Information Security, Korea University: By creating a circuit diagram redundant data center, if there is any problem, the manpower should be immediately transferred to such a backup center, so that the service can be resumed immediately within a few tens of minutes to a few hours…

.]



Kakao promised to create an environment that could prevent similar accidents within two months and to secure additional data centers of its own, saying that it would prioritize investment on infrastructure construction.



(Video coverage: Park Jin-ho, video editing: Kim Ho-jin)



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