1-2MW is like one or two rows of older non-GPU machines, it can't be called a DC.

That's what many data centers look like for a mid/large non-tech company that in-houses their datacenter operations. They're often otherwise a "real" datacenter with UPS, backup generators, multiple tier-1 carriers, chillers, raised floors /w hot/cold aisles, etc.

You see it less now since the shift to the cloud, but in the 00s this stuff was everywhere.