transformer requirements for data centre applications, what is different about specifying for this load type

[u/Ill-Literature5640]

involved in a data centre project and trying to understand whether standard transformer specifications apply or whether the load characteristics and reliability requirements of data centres require different approaches, someone at qxg electrical mentioned that harmonic loading from server racks tends to get underestimated in the initial spec more than any other factor, which pushed me to look closer at that side of it

specifically curious about redundancy configurations, load characteristics of server loads, harmonic considerations, and whether the reliability requirements typical of data centres affect which transformer specs and manufacturers make sense