Kimsufi KS-1, df -h shows a larger disk than 1TB
I'm pretty sure I've seen discussion here about Kimsufi disks being larger than advertised, but I can't find them. Thus my post. The KS-1 I somehow managed to snag is supposed to have 1T, but according to df - h it had 1.99T, and just today as I double-checked, it is showing 1.5T. So, is df -h is more definitive than what is advertised?
If so, is it safe to treat it like it will remain >1TB, or, as it appears, will it shrink over time?