OWC Thunderbay 8 48TB Thunderbolt 3 RAID Enclosure - With 8 drive bays, you have the choice to install only hard drives, only SSDs or a mixture of both
Synology NAS DS218play 2bay 4TB WD Red Number of drive slots: 2 ×, storage capacity: 4 TB, interfaces: USB 3.0; RJ-45 (1000Mbps), RAID, number of hard drives pre-installed: 2 ×, RJ-45 ports: 1 ×, RJ-45 speed: 1 Gbit/s, hard drive form factor: 3.5"; 2.5"