Today, only NAS with a 5Gbps channel for 6 disks or more are the only value. Allowing you to make a really fault-tolerant RAID-10.

But their prices for ordinary mass consumers are insane.

Anyone with a pair of twists and straight arms can independently assemble a NAS for 6-12 disks based on a regular PC case and cheap motherboards with cheap processors, which will be several times cheaper than branded solutions and just as reliable and quiet. The difference in consumption (and payment for electricity) is easily compensated by the monstrous difference in the price of proprietary solutions for 6+ disks with RAID-10 and self-collection for a period of up to 10 years of use.

The only thing that stops people is their stupidity and monstrous laziness. Well, about the same as with viewing content on a really large projector screen (which requires hanging the screen and minimally preparing the room for viewing in complete darkness), and not on a miserable small TV screen (65-75" vs 106" as minimum), which is immediately completely removes the need to go to the cinema, watching everything on the big screen in the comfort of your home.

The problem is not even in assembling a powerful NAS with your own hands, but in the monstrous price of HDD (compared to the abundance and progress that was from the 90s to 2012), which began to grow on average since 2015, as the Forbes analyst showed in detail quite a long time ago.

By the way, having a PC-based NAS working at home 24/7 makes it easy to create your own mail server, getting rid of the transfer of mail information to third parties like Gmail, etc., as well as your own web server.

And the introduction of IP6 is being delayed on purpose in order to sell "white", "static" IP4 addresses to the public, which have long since ended. In IP6, anyone can have at least 1000 unique addresses for life for free.

Everywhere you can see ears to squeeze out profits where people condone the introduction of important standards or banal human laziness and incompetence ...

I bought something very similar like 12 years ago. Is had 2Tb Seagate(or WD?) Green. That's cheap hard drives. But it was 500$ instead, still a high price tag for this era.