Yes, I saw Time Capsule does work with PC. There are plenty of single drive NAS that you can use to back up your data. Getting a couple of them and you’re basically getting something similar to RAID-1. I actually have these NAS to back up my data locally. But I also got Backblaze to put my data in another physical location and it’s sitting in a server farm with a lot more redundancy that I care to try to do. I still think it’s very important to a) back up your data and keep that back up in a different physical location b) have that back up stored in a redundancy system that can withstand hard drive failures. I have my fair share of hard drive failures, so I don’t really trust them.