....
The HighPoint web page says it has universal compatibility (works with M1 Macs) so I don't think you need to worry about firmware. And it says it works in a Thunderbolt enclosure.
https://www.highpoint-tech.com/ssd/ssd710x-overview
In any case, Thunderbolt will limit the raid to Thunderbolt speed ≈2700 MB/s.
Thanks very much for your assistance. Good to know.
For my financial tightness, I'd be happy to loose some speed of the drives, in order to avoid paying Apple huge amounts for their soldered to the motherboard disk capacity. Which is how I presume a Mac Mini Pro or Mac Mini Pro Max would be made. Unfortunately the same policy will be followed with RAM, and there is no way to get around than, which is not surprising, considering the unified memory.
In Australia, to go from an M1 Mac Mini with 256Gb drive, to get a 1 TB drive, costs $Au600 (in $US that is about $420 including sales taxes). To get 2 GB costs another $Au600. So to go from a 256 GB drive on a Mac Mini to a 2TB drive, costs $Au1,200, or in $US800 or so dollars inc tax. A 2 TB Samsung 970 Evo Plus costs here in tax, $Au300, or about $US200 to $210 inc tax. Its annoying that Apple charges 4 times the price for their disk capacity, when it is not upgradeable ...
Yes the newer Highpoints are quicker in the right environment. I was lucky to be able to buy a discounted 7101A-1. Strangely the sale seemed to be an unusual discount for Australian Amazon Prime. I now suspect the "5" stock level in Australia triggered a large discount being applied, it has not re-appeared, and I've been looking daily, for a fellow in the UK who wanted a lower price solution.
While I'd prefer an M1 Pro or M1 Pro Max with a PCI slot for replacement to my 5,1 CMP, I suspect I'll have to wait a long time for one and who knows how costly it might be ... I wish Apple would at least tell us what they're going to do. But even if Apple did, they'd never announce its price until it would be almost shipping ...
I think I will tell my friend to eBay his T3 dock ... if I need one I'll buy it when I need it. I would have taken it off him though, for my 2017 15.4" Macbook Pro but for the current outrageous cost of GPUs at the moment.