That's the land allocation rather than the building-size / data-centre size.
The average data centre is 10,000 square metres (2.5 acres).
As well as compute and network facilities, DCs also need to accommodate parking, personnel areas, cooling, fire-suppression, power substations, power redundancy (generators), ground-security…
244 acres is absolutely at the upper end of any DC site.
How much parking does a data centre need, and why is it not placed underneath the building, underground? Why do cars have to take up so much land?
It also buffers for all the surrounding properties which would otherwise complain about noise.
Utah’s 40,000 acre datacenter proves it’s not absolutely at the upper end.
https://www.theverge.com/ai-artificial-intelligence/933687/u...
Most hyperscalers now prefer to build larger sites as “campuses” which may consist of many buildings each consuming 40-100MW, and then yes each building needs most of what you mentioned, so it adds up.
A few sites are now also contemplating BTM or ‘behind the meter’ power generation which takes additional space.
Then some sites like Microsoft’s Fairwater design are optimized for a very large number of Accelerator cabinets — think GPU, TPU, etc. Those cabinets are each consuming 140kW today and with a path to 700-1000kW cabinets soon, so that’s one super dense building instead of a campus of less dense buildings filled with Compute.