A data center server technician makes on the low side of $30,000.00 per year and on the high side of $100,000.00
I think it depends on how much experience you have and what company you work for on what you'll earn as a data center server technician.
If you want to work as a server tech in a data center then I'd look into working for googles data center as a server tech as I hear they make the $100,000.00 per year but be aware that living in California is more expensive so you might be earning that $100,000.00 but with cost of living more expensive in California you might be better off working for a data center in another state that pays less.