Basically: they can be buggy. Either they work fine for you, or you hit an edge case and have trouble. They can also have worse performance as they only have on

Basically: they can be buggy. Either they work fine for you, or you hit an edge case and have trouble. They can also have worse performance as they only have one SATA controller and split it amongst the drives. The fancier more expensive ones are typically referred to as HBAs instead of "SATA cards" https://unraid-guides.com/2020/12/07/dont-ever-use-cheap-pci-e-sata-expansion-cards-with-unraid/ https://unraid-guides.com/2020/12/07/dont-ever-use-cheap-pci... If you're doing this at home, you can get used enterprise gear on eBay (like an LSI SAS HBA) for the same price or cheaper than brand-new consumer gear, and it will probably still be more reliable (I built a 130 TB NAS for my friend's video production business and literally everything aside from the drives and the cables was bought used on online auction, and it's been humming along fine for a while now - the only part that was bad was one stick of RAM, but the ECC errors told me that before I even got around to running my tests on the sticks)