A Hyperscale data center will have around 100,000 servers. Some may have only 80,000 and some 120,000, but that is about the range.
A small data center, or Enterprise data center, would refer to the type where companies choose to run their own servers, and could be as small as a couple dozen servers to maybe several thousand.
Then there are Edge data centers, smaller, specialized centers specifically located closer to the devices that are using them. They are usually larger than Enterprise but smaller than Hyperscale, although the size is not a hard limit or requirement. This is becoming increasingly important as automated cars and IoT come into play since these moving parts (literally moving around) would need near instantaneous communication with the data center.
So, I guess in the end, it's not really that hyperscale data centers are a certain number of times larger than non-hyperscale. It's sort of more about what they are used for:
Hyperscale-- Huge data centers that lease-out the use of servers for Cloud Computing, i.e. AWS, Google Cloud, Microsoft Azure, etc.
Edge-- Smaller and located closer to the devices that need them-- Can be extensions of the above.
Enterprise-- Usually the smallest, as they are operated by the same companies that are using them-- Run privately for internal use, usually not leased-out as a service.
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