I’m no expert and new to this sub but I’ve been making music for 10 years and have amassed 2TB of .wav files that I use for music production.

I store these on an 8TB HDD.

The second copy is an automated backup that occurs every morning at 4AM to an 18TB HDD using Veeam Agent (not Backup and Recovery!), which is free!

I am currently working on also backing the 8TB HDD up to the cloud via BackBlaze.

This system works great for me!