huh... 20 year old data center is really too old, unless you have a crack team.
The problem with CoLo is that you are at the mercy of the data center team to remedy the situation.
Then hope you are on their priority list (which you probably are not)
And many data centers have been bought up by VC's, gutted and run with a skeleton crew of over worked and under qualified staff.
(CoLo means Co Location, you can rent a rack just like a self storage. The sell is that you do not have to worry about security, power, environmental regulation or internet connectivity and all said systems are massively redundant)
((except they usually are NOT))