What happens when you run into trouble with one of the servers? Like it's suddenly stopped responding and you can't SSH? For my systems built on EC2, I might n

What happens when you run into trouble with one of the servers? Like it's suddenly stopped responding and you can't SSH? For my systems built on EC2, I might not need to do anything at all for typical hardware failures, if I've set up EC2 auto recovery. It transparently relaunches my instance on another server. If I'm not using auto recovery, then I might just stop and restart the instance, in which case I'm also migrated to another physical server if the first one wasn't working. It has the same identity, by the way: same IP address, same disk contents, and all that, and all the machine perceived was an OS reboot (or maybe kernel panic followed by reboot, depending on the failure). For stateless systems I don't even need to bother with that. I'll just configure it to spin up a replacement instance if the desired number of servers I want to have online is not met because one of them failed. When I have 100+ servers in a fleet, this is really convenient. I don't need to keep track of them individually, I just say: "This is the image I'd like to run, and I want to have 100 of them". Hardware failures that would bring down a normal physical machine don't need to involve me at all. The old server hardware that's broken is now in the hands of EC2 to repair or swap out, and my server's back up and running in minutes, possibly with no action on my part. Is something like that easy to achieve with colocation and support offerings with those vendors? Genuine question - I've never operated in colo or worked with those vendors. I realize that colo facilities can take care of repairing and swapping servers for me, but the benefit I get from the cloud is that I can perform those actions in moments with an API, or they can happen automatically, and I don't need to engage other humans. I can't imagine spending my time coordinating with vendors, getting on the phone, opening support tickets, waiting for people to do things, etc... right now I can do everything at the speed of computing with APIs and automation. It'd be tough to give that up.