If you really want to go hardcore but also do a lot more with your NAS go for a Synology DS920+ or higher: DS920+ | Synology Inc.
You can install several 16TB 7200RP drives (or smaller ones for cheaper price) + some NVMe cache memory but these mid/high-end solutions will probably cost you $1000 or more. You can directly run multiple virtual machine from this NAS meaning a Safe Network node, a full bitcoin core node, a full ethereum node, and on top of that store your own private data. It’s basically your private data vault which can do more than just store data.
Running docker images can be very easily done as I’ve read.