Is it ok to use slack for an internal chat for sysadmins?
@pounce @sir @Wolf480pl this is not solely a problem of Facebook and the greatness of IRC. Any system will go down at times and if you are the one to bring it up again you better have another way than that system to communicate. Of course, IRC being a battle-proven and resource-friendly technology is a good choice for this. Yet, unless you are operating Slack, you can of course also use that. Just have a backup plan on what you do if your Internet, or Slack, goes down.
You'll notice that slack always goes down then you need it the most.
OTOH, IRC never goes down. Sometimes it has netsplits, but even then you can still communicate with some of the people in the channel, and you can hop servers to find everyone else.
IOW, IRC is more resilient.
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!