Ignore the peeps saying not to use a regular pci-e card. Old recc, ASmedia ones are ideal good for 4-6 ports. 8+ you need to dabble in LSI shenanigans. The ASmedia ones use way less power and are worth it if you don’t need 8+ ports. You get all the features you want, they look and act like real SATA ports.

Check these guides (not just applicable to unraid, I don’t use unraid, but they cater towards a “ez straightforward” crowd so they make relatively concise and vetted info dumps):

https://forums.unraid.net/topic/102010-recommended-controllers-for-unraid/

https://forums.unraid.net/topic/41340-satasas-controllers-tested-real-world-max-throughput-during-parity-check/