One of the cooling fans in my PC (there are several) is starting to give up. I think it might be the bearings that are giving up, but whatever the cause, every several minutes, it visibly slows down for maybe a minute or two (slows down to the point that you can actually see the individual fan blades as the fan rotates) and makes quite a bit of noise, then it gets back up to speed and runs smoothly (and quietly) until it decides to get slow and noisy again.
The main purpose of this fan is to be one of two drawing in fresh air through the front of the case, and provide airflow across several 7200 rpm HDDs.
I have already ordered a new fan, so this is not a question of whether it should be replaced. I expect to be able to actually replace the fan by the second half of next week.
Rather, my question is: aside from the fan itself failing at some point, is it in any way an electrical risk for the other hardware in the system to keep the fan running? In other words, assuming I can live with the noise, should I disconnect the faulty fan while I wait for the replacement to arrive (and accept the fact that the HDDs will be running hotter, which is clearly suboptimal), or is it acceptable to get as much utility as possible out of this fan while it lasts or until the replacement arrives?