I want to consolidate my Workstation with my Media Server and I want to reuse my 46 TB WD Red's.
I can use External USB 3.2 Gen 2 DAS :
https://www.terra-master.com/de/products/homesoho-das/d6-320.html
or internal SATA disks in a tower case.
Any opinions, recommendations?
I've had pretty crappy experiences with pooled, external USB storage being run 24/7. Depending on how your data is setup, and how much access it gets, you may have a bad time. Essentially, maybe a decade ago I let my Windows machine balloon to like 20+ external disks. For the most part it'll work but if you're hitting a bunch of drives at once, I noticed a greater chance of a drive randomly disconnecting despite not moving and the drives themselves being perfectly fine hardware wise. Go internal, 46TB is not a ridiculous amount of data. If it's 3TB drives or something, yeah that's going to be a bit of a hassle.
Why would you consolidate though? There's huge sanity / uptime benefits from keeping the two separate. My Workstation has very little data on it, like 6TB of SSDs and a set of spinning disks for cache. Everything else, project files, assets, media etc are on servers.