Don’t out the company’s name if there’s possible pending litigation against them. This link might help you out:

https://www.mondaq.com/australia/consumer-law/315518/how-to-make-a-complaint-against-your-solicitor

What language was the post written in and where was it posted? If the subsidy is in Australia and written in English it’s likely it’s for the Australian market which is where I would recommend you filing your complaint.

Why would it “break”? Isn’t the 4096 the block size setting?

I sit in r/datahoarder a lot and the general consensus is that BTRFS is unstable and should not be used, and instead people should use EXT4 or ideally ZFS. I know ZFS is the gold standard and expected to be more resource intensive and RAM hungry. Can you shed some light on why you’d use BTRFS?

I really like the Fractal Design Node 804 which will hold 10 drives and will likely be the next case that I build in.

You could also go with the Phanteks Enthoo Pro 2 which should hold 12 drives.

The 8TB Samsung drives are what, $400? Get yourself a 5400RPM drive for half the cost and twice the space.