2 minute read.Last Modified 2023-11-17 15:28 EST
An Uninterruptible Power Supply (UPS) is a power backup system that ensures continuous electricity during outages, preventing downtime and damage.
Connect the TrueNAS system to the UPS device. To configure the UPS service, go to System settings > Services, finding UPS, and click edit.
See UPS Service Screen for details on the UPS service settings.
TrueNAS EnterpriseTrueNAS High Availability (HA) systems are not compatible with uninterruptible power supplies (UPS).
Some UPS models are unresponsive with the default polling frequency (default is two seconds).
TrueNAS displays the issue in logs as a recurring error like libusb_get_interrupt: Unknown error.
If you get an error, decrease the polling frequency by adding an entry to Auxiliary Parameters (ups.conf):
pollinterval = 10.