Assuming you mean 99.9999%; your hyperscaler isn't giving you that. MTBF is comparable.
It's hardware at the end of the day, the VM hypervisor isn't giving you anything on GPU instances because those GPU instances aren't possible to live-migrate. (even normal VMs are really tricky).
In a country with a decent power grid and a UPS (or if you use a colo-provider) you're going to get the same availability guarantee of a machine, maybe even slightly higher because less moving parts.
I think this "cloud is god" mentality betrays the fact that server hardware is actually hugely reliable once it's working; and the cloud model literally depends on this fact. The reliability of cloud is simply the reliability of hardware; they only provided an abstraction on management not on reliability.
Assuming you mean 99.9999%; your hyperscaler isn't giving you that. MTBF is comparable.
It's hardware at the end of the day, the VM hypervisor isn't giving you anything on GPU instances because those GPU instances aren't possible to live-migrate. (even normal VMs are really tricky).
In a country with a decent power grid and a UPS (or if you use a colo-provider) you're going to get the same availability guarantee of a machine, maybe even slightly higher because less moving parts.
I think this "cloud is god" mentality betrays the fact that server hardware is actually hugely reliable once it's working; and the cloud model literally depends on this fact. The reliability of cloud is simply the reliability of hardware; they only provided an abstraction on management not on reliability.