Cloning High Sierra with a Bootcamp Partition onto Raid 0

The only way I know of is using Sierra How to configure a software RAID in macOS Sierra’s Disk Utility. This is using HFS+ file system.

Within High Sierra using SSD’s you need the newest release and you can only use HFS+ APFS is still not supported!

OWC SoftRAID is the only way I know of to get High Sierra or Mojave to work, still using HFS+, APFS coming in SoftRAID 6.0 SoftRAID - Compatibility

As for getting BootCamp to work. I don’t know of anyone getting it to work. But I could see someone setting up two partitions per drive and then setting up the RAID across under MacOS using SoftRAID (HFS+ or APFS) of the first set, then using Windows 10 straight up under the second set of partitions in using NTFS.

You’ll then need to reboot to get into each OS, I think this is just too messy. I haven’t tried setting this up since Windows 7 so I don’t know if you even could get this to work with the newer MacOS’s. Given the complexity we opted not to roll this out.