Earlier quoted context omitted.
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?
Datacenters aren’t built next to Nordstrom. Theres just no reason to spend on engineering and construction that increases density like underground parking.