If you don’t have your data in at least three places then it doesn’t exist. I am a fiend for backing up for that reason and I think I’ve found the perfect set-up in my Promise R2+ and Synology network.
For my production drive I use a Promise R2+ 6TB drive. So all the photos and videos that I’m working on at the moment live on that drive. I then use an application called Carbon Copy Cloner to copy that drive at 1am to another 4TB USB drive and then at 3am to my Synology network drive.
Then at 5am, that Promise drive in my office is backed up to another Synology. The logic here is that having one copy is not a backup. Because if your machine dies and you only have one “backup” you actually only have one version now and what happens if that drive fails before you can replace the failed one?
The Synology is what’s called a NAS or network attached storage drive. The models I have are the 1515+ and they are absolutely essential to my workflow. They have 5 drive bays that are seen by my computer as a single drive. So I have 3x10TB of storage for my back up. That may seem excessive, but trust me, when you start working with 4K video, it really starts to add up.
I’ve used other makes of NAS drives before and I’ve found the Synology to be the best for my needs. They have some great features.