It was not really clear, what I meant was to look for those keywords and the idea behind them, not exactly the above full text. Some Intel processors implement a concept of parallelism, but done within the same chip and this may not be what you are looking for, in this case, it aims the execution of distinct tasks, not the redundancy itself; So, once you said you're using an ARM core, I suggested considering to create a proprietary protocol for data exchange between both processors, so that the backup would be always up to date.