this bracket has 2 slots, I need a single, as I will use a total of 4 disks at most@sonkam
I use 2Tb 870 disks in all of my Poweredges as their bootdisk (and homes, software, etc..), they're very reliable and don't overheat.
I recommend against using 870's in RAID5 as it will wear them out faster but then again it depends on your workloads. (even though they are TLC, their endurance isn't stellar).
The brackets I used were ICY Dock EZ-FIT MB082SP PRO 2 x 2.5 Inch to 3.5 Inch Drive Bay SATA SSD/HDD Mounting
I hope that answers your question.
Regards,