I have a random, quiet, inconsistent length beeping sound coming from my server that I can not trace down. It happens at random intervals, and the beeps are of random length. It sounds very similar to a bios beep code, but a bit quieter and not a consistent length. Sometimes its one quick, short beep. Sometimes its a really long few second beep. Sometimes its a long beep and a quick short beep. I haven't noticed anything not working on the server, all seems fine. It does not sound like a failing hard drive chatter, which is the main sound google seems to point me towards. Troubleshooting steps tried so far: ran memtest, passed removed GPU, still beeped replaced motherboard, same beep sounds redone thermal paste, temperatures are in check, <40C, still beeps Passed all short SMART self tests (running extended ones next) Looked through syslogs, nothing matches up timestamp wise with the beeps Persists through reboots Build: Mobo: GIGABYTE X99 GA-X99-UD3P CPU: Intel Xeon E5-2687W v4 Ram: 48gb Corsair Vengeance GPU: GTX 1060 6gb PSU: Cooler Master MWE Gold 850 V2 Case: Fractal Define R5 HDD's: 3 12tb Seagate x16, 2 12tb Seagate x14 Cache: Kingston 480gb SSD NIC: TP-Link 2.5G PCIe card Other maybe relevant info: Sonoff Zigbee adapter Running HAOS as a VM Seemed to start roughly around the time I added the 2 Seagate x14 drives?