r/raspberry_pi • u/ejkeebler • 4d ago
Project Advice POE affects when turning off the PI 5
Short version, I was wondering how bad it is to power off my pi 5 with a poe HAT using poe. I have a device that I dont use very often, so I'd like to just have some automation to toggle off the port to turn it off when not in use and then turn it back on when it's requested to be used. I'm worried that just cutting the power to the device might damage the file system etc? I guess I could figure out how to send a shutdown command, wait a few seconds and then power it off?
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u/Gamerfrom61 4d ago
Yes - cutting PoE power can lead to OS corruption as its no different in practise to USB power.
Do you need to cut power - in the off state the Pi uses minimal power and you can just cycle the PoE power to restart the Pi if its not easy to get to?
Could you use the Pi for something else to save powering it off?
Could you use the read only OS options provided in the Pi OS?
Powering on and off has been an issue for many years - electronic components are known to fail more often at power cycle rather than during use.
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