SME and "a server" is doing some big weight lifting here.

If you want a custom server, one or a thousand, it's at least a couple of weeks.

If you want a powerful GPU server, that's rack + power + cooling (and a significant lead time). A respectable GPU server means ~2KW of power dissipation and considerable heat.

If you want a datacenter of any size, now that's a year at least from breaking ground to power-on.

And multiple years from the boardroom making a decision to build a data center to breaking ground.