[cyberax]

Yep. Found that safety video: https://youtu.be/NrP5-E9jmas?t=344 - I was misremembering it a bit.

It's really unfortunate that halon is so dangerous for the ozone layer, none of the replacements are as good as it was.

[jabl]

High-pressure water mist systems seem pretty good, including being usable in spaces with lots of electrical stuff like machine rooms and data centers.

https://www.marioff.com/en/

[cyberax]

Second 292 for the demo.