I run a small shared web hosting company and rent all my servers.
I periodically consider switching to colocating my own boxen and inevitably get stuck understanding how much it may cost.
As far as I understand it you pay for space, bandwidth and power. Space and bandwidth are straightforward but power is a bit of a mystery to me.
Considering just a 1U single-server scenario (for simplicity's sake), one may generally have the option of 0.5A, 1A, 2A and so on.
I have no real clue how much power I'd need.
If I went for 0.5A, what sort of spec machine would that allow and under what (very general) usage conditions? Likewise for 1A, 2A and so on.
I appreciate that when considering what can be run on 0.5A there are a range of variables to consider, but all I'm looking for are rough ballpark figures.
What could I run on 0.5A? What example specs would be fine on 0.5A? What wouldn't be fine on 0.5A?
Feel free to throw in suggestions applicable to 1A, 2A or any other power level. I'm just trying to get a grasp of what can and can't be done with respect to typical power levels.