Yes, very important. I have two dedicated machines in different racks in Canada that were serving requests all night. I was also logged into both machines via SSH all night with no interruption.

exactly, german datacenter is operational without any problems yet

Thanks, we've updated the headline.

But no one knows which DCs and services are down. They lost their internal network and have no idea themselves.

I'm pretty sure they know exactly which services are down.

Even if they didn't, clearly many services are up and running normally, so saying "all datacenters are down" is just a lie.