Michael,
While it’s a bit more expensive, by investing in a true SAS solution that is connected via TB adapter, you will have far more options moving forward. One good recommendation would be a combination of the Sonnet Tech SE-I Thunderbolt 3 to PCIe chassis. This allows you to install 2 PCIe HBAs. The result would give you the ability to add a true SAS HBA like the ATTO R680 or the HighPoint RocketRAID 4522 and later add a 10GbE network adapter.
You could then use anyone’s SAS tower to hold and power your disks – we like the SANS Digital TR4X and TR8X units. These are cost effective, quiet, reliable (we have 2 that are over 8 years old), and can support any 3.5″ SATA/SAS disk out there. You could load a TR4X with four 12TB and end up with 32TB of RAID-5 capacity. Here are some non-affiliate links so you can get an idea of the costs.
Sonnet Echo Express
https://www.sonnetstore.com/collections/thunderbolt-expansion-systems/products/echo-express-se1-thunderbolt3
SANS Digital 4 bay
https://www.amazon.com/Sans-Digital-TR4X-HA-TowerRaid/dp/B00JOCDC6Y/
ATTO R680
https://www.amazon.com/atto-technology-esas-r680-000-expsas-adapter/dp/B007MOUCLO/
HighPoint RR 4522
https://www.amazon.com/HighPoint-RocketRAID-4522-External-Hardware/dp/B009YSSREA/
Seagate EXOS 12TB Enterprise grade disk
https://www.amazon.com/Seagate-Enterprise-Capacity-ST12000NM0007-7200RPM/dp/B0759Q9FXZ/
Tim
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Tim Jones
CTO – TOLIS Group, Inc.
https://www.tolisgroup.com
BRU … because it’s the RESTORE that matters!