I also had the exact same problem with Ubuntu 15.10 and Windows 10 dual-boot setup and now that I upgraded to Ubuntu 16.04 LTS it is still there unfortunately. Mdadm or the intel tool in windows will always try to resync the array on each reboot.
I also had the exact same problem with Ubuntu 15.10 and Windows 10 dual-boot setup and now that I upgraded to Ubuntu 16.04 LTS it is still there unfortunately. Mdadm or the intel tool in windows will always try to resync the array on each reboot.