TerraMaster Official Forum

Hi,
I've got an F5-422 OS 5.1.67

I wish to expand the storage of drive 5 which is TRIAD 16TB(14.54 Formatted), I've bought a 14TB drive to do this. However, there is no option to do this, the edit button is greyed out.

How do I expand the storage?

You need a disk with a capacity of 16TB or greater to join a 16TB TRAID.
At this point, TRAID is the same as a typical RAID type.
The uniqueness of TRAID is that it can reuse the extra capacity in RAID to build more RAID space, but there is no extra capacity in your 16TB TRAID.