@winnielinnie Sorry friend, it took a little longer but i’ve collected all the info from the new drive, from the same batch:
As you can see, the capacity is different for this drive everywhere. From smartctl info, HD Sentinel, SeaTools, diskpart, Disk Management and it correctly shows 16TB aka 14902.0GB usable capacity.
Also, i was looking for some info online and i found this:
As per this info, it means that 14.55TB is the correct usable capacity. I dunno. Maybe some other users can give some insights on this before i start making the changes on every drive. I’ll wait for the answers before i jump to upgrade the firmware and change sector size.