Not sure about the odroid but I got myself the nas kit from friendly elec. With the largest ram it was about 150 bucks and comes with 2,5g ethernet and 4 NVME slots. No fan and keeps fairly cool even under load.

Running it with encrypted zfs volumes and even with a 5bay 3.5 Inch HDD dock attached via USB

https://wiki.friendlyelec.com/wiki/index.php/CM3588_NAS_Kit