Truenas recommends SSDs since half a decade ago or so due to the high failure rate. The forums felt pretty flooded with posts about failed USB-drives for a whil

Truenas recommends SSDs since half a decade ago or so due to the high failure rate. The forums felt pretty flooded with posts about failed USB-drives for a while there, and even before that I switched to installing on a SSD since I got tired of having a triple-mirror USB-setup just to keep the system alive long enough to be able to replace them (system was located across town back then).