I'm thinking about getting some SSDs & setting up a RAID1. A RAID1 with a hot spare would be extra nice to have. It's easy to do with Disk Utility. I have a 2023 mini with a M2 CPU. I'm limited to 2 USB-A & 2 USB-C. Do I need a NAS? I think that I use a Thunderbolt port, correct? I reckon that I need some kind of device to place the SSDs, correct? I've been thinking about getting a USB dock.

What do you suggest?