I'm guessing with a significantly smaller footprint, you can have more of them in a single building. I'm also guessing this means because more of them, you gain

I'm guessing with a significantly smaller footprint, you can have more of them in a single building. I'm also guessing this means because more of them, you gain more redundancy. Whats not mentioned is if there is a decrease is part count, which are usual drivers of cost, maintainability, and reliability.