Which makes me think it's simply too many outsourced platters with bad sectors. Why I think so? Hard disks contain equal sized platters, example, 6TB and 8TB have 3x2TB and 4x2TB. Old 3TB models (from 15 years ago) had 2x1.5TB or even 1x1.5 (as one disk, they had such disks. WD green, for example), so what platters they use in 5TB, if we are to consider your theory, jaclaz, I'm not saying you are wrong, I'm just curious. What I want to say, perhaps the limit is also in the controller, to make sure no one hacks the original HDD firmware to be able to use the full 6TB (real size).