Can I offer a perspective. I was around a company 12 years ago where someone did a Chernobyl experiment by disconnecting the UPS and trying something. This tripped the circuit breakers and killed the SAN (storage area network) and about 500 servers. Then the company discovered the failover data centre was incorrectly sized and went down as well. The SAN subsequently refused to restart and then the Japanese manufacturer informed the company that Sorry but the SAN was no longer supported as it was an old version. The company paid a lot of money to fly somebody from Japan and it eventually was restarted after a few days. But it cost the company £1m in penalty clause payments to their system users. There were a number of banks and Health systems involved in that but was kept quiet for obvious reasons.