TerraMaster Official Forum

Oh, also forgot to mention, that as you had also described in another post, the only way to recover and access the data on the drives again is by restarting the unit. Please note I have also tried this on 2x TerraMaster D5-300C units and the result is the exact same on both. Disks unmount from OS af...

There is - The logic board inside of the unit is at fault. It's crashing during heavy I/O operates - fine under low load but toast if you try to copy between disks. Seems likely that it can't cope with the amount of data flooding through it. All the responses from the moderators/team point fingers a...