[ta20200710]

EC2 does support live migration, but it's not public and only for certain instance types/hypervisors.

See: https://news.ycombinator.com/item?id=17815806

[_msw_]

Here's a comment that I made in a past thread.

https://news.ycombinator.com/item?id=26650082

[dilyevsky]

My experience running c5/6 instances makes me very confident ec2 doesn’t do live migration for these. Fwiw gcp live migration on latency sensitive workloads is very noticeable and often time straight up causes instance crash

[dwmw2]

Intrigued by this observation. What is it about your experience that leads you to conclude that EC2 doesn't do live migration?

And could it be phrased differently as "EC2 doesn't do live migration badly"?

[dilyevsky]

Mainly the barrage of "instance hardware degradation" emails that i get whereas on gcp those are just migrated (sometimes with a reboot/crash). Also there is no brownout. I've never used t2/3s which apparently do support migration which would make sense.

[my123]

After some kinds of hardware failure, it can become impossible to do live migration safely. When a crash can ensure due to a live migration from faulty HW, I'd argue that it's much better to not attempt it.