Off the shelf nas? Build your own. I use Xpenology. It turns my hardware into a synology nas. I did buy a Unas case, so it is a nas style, but anything that holds disks will work. Yes a little tinkering still but not much. Bootable usb stick is easy enough. I’ve also used Freenas/truenas. I like them well enough, but I had gotten used to synology. Just don’t want to buy their hardware. I run two. Works just fine.