Get a used adaptec arc 82885T which as an expander card. It only needs molex to power it, and it allows the HBA to connect to up to several hundred data drives (HBA to expander to HDD). The documentation is straightforward to understand.
An example: https://ebay.us/m/SYvAxO
Do not use a raid controller with Truenas. Use a HBA such as an LSI 9300 or 9207 (old but fine for HDD). Truemas manages the drive itself and any barrier to that (like device managed SMR drives and Rains controllers) means Truenas does not know where the data is, and you are likely to get data corruption at some point.
Dissertation title: the use of self hosted technological solutions for stress management in off duty nursing staff
Ie why torrenting media is the only way for poorly paid nurses is a sign of the breakdown in the social contract
Or, and this is one I've been thinking about, The use of patient data in health organisation owned AI systems and consent: What happens when children say no