New drives arrived today. 2 x 4TB WD RED (CMR).
And holy shit was it an absolute fucking garbage fire to get this working…
Paid at least 20 bucks too much for the data cables because none came with the drives and the cheaper place didn't have any left so I had to go to the expensive but shitty electronics "discounter".
No space for more disks in the case, so they're now hanging from one screw each in the optical drive bay, which is extremely horrible.