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It was a month from release and it’s a product that’s “even more critical than the OS kernel” for reliability and availability. A failed hypervisor can take out dozens of servers at once.

I also managed to crash or lock it up several times, I just mentioned the keyboard thing as an insane bug. What possible dependency could a stripped down kernel with hardly any user space have on a keyboard layout that’s identical! It is different from en-US in name only.

It’s not about the specifics of the issue, but about the overall impression of sloppiness. They didn’t make a hypervisor that’s purpose-designed for the requirements, they just stripped down Windows and deleted stuff haphazardly so that they were missing the keyboard but still had the installer option.

For reference, I did run it at scale a few years later and my misgivings were confirmed… and then some. It was much less stable than ESXi and the cluster operations were a disaster. Read only operations could cause deadlocks that only a full cluster reboot could resolve. In-place upgrades weren’t available for several major versions! Meanwhile ESXi clusters could be live-upgraded including disk format changes!

After enough decades of experience you get a sixth sense for these things. A single sentence or just one word can trigger an alarm bell in your brain.




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