Replacing a fan means that you have to take into account basically three things:
1) Airflow managed by the fan, as in volume (liters/cubic meters etc. by the hour)
2) supply voltage
3) control circuit of the fan (feedback of rpm etc.)
So a replacement fan has to be able to move at least the same amount of air as the previous one, and then you can worry about the connectors...
Depending on the system that is cooled, sometimes it is easier to run a fan off of AC, therefore the 230VAC options.
The power drawn is usually of little concern, as power gets drawn by the fan, not pushed to it...
Of course, the power supply (or PCB traces etc.) should be able to supply the needed amount of power to the fan.
So I would not worry about the Wattage the replacement fan would draw, as long as the overall environment is healthy- I would rather worry that the airflow is guaranteed.
From a look at the datasheet I would imply that the fan you already mentioned has to be able to move approx 30 cubic feet per minute, and it is a fan with 92mm size and 25mm thickness, that gets fed from a 115VAC/220VAC source.
PC case fans usually run with 12VDC, so a direct replacement would not work, as long as there is no power converter used.
I see two approaches to the issue:
1) Depending on the airflow really needed, throttling the existing fan via a resistor or pot, or some more elaborate temperature control circuit
2) replacing the fan depending on the case size with a bigger fan, like 120mm- for the same airflow you need less rpm, and therefore those fans usually run quieter