On Fri, Sep 24, 2021 at 3:36 PM Niels Bakker <niels=nanog@bakker.net> wrote:
* cma@cmadams.net (Chris Adams) [Sat 25 Sep 2021, 00:17 CEST]:
Which - why do I have to order different part numbers for back to front airflow? It's just a fan, can't it be made reversible? Seems like that would be cheaper than stocking alternate part numbers.
The fan is inside the power supply right next to the high-voltage capacitors. You shouldn't be near that without proper training.
Last rack switch I bought, no fan was integrated into the power supply. Instead, a blower module elsewhere forced air past the various components including the power supply. Efficient power supplies (which you really should be using in 24/7 data centers) don't even generate all that much heat. Regards, Bill Herrin -- William Herrin bill@herrin.us https://bill.herrin.us/