[ilyt]

It becomes complex when you want to support multiple NVMes

Even more complex when you want to have any kind of redundancy, as you'd essentially need to build-in some kind of RAID-like into your database.

Also few terabytes in RAID10 NVMes + PostgreSQL and something covers about 99% of companies needs for speed.

So you're left with 1% needing that kind of speeds