First things first:
Can I add more points to the question? So the duplicity can be reduced and all the readers can answer a single question perfectly.
If you're talking about the duplicates: Please don't do that, unless you also change all the answers. If your question is very similar to another one, don't edit the other one just to make sure yours isn't a duplicate.
You should rather tell us why yours is different.
Some people feel it duplicate so they vote down or sometimes it leads closing a question.
Normally, if you post something that has been asked over and over again, downvoting happens, because people think "Ah, not this again!". And quite honestly, if you spend a bit searching the site, these people should have found similar questions. This does not apply to every case, but questions about backups are fairly widespread and always produce the same answers.
However, you say that you've already seen them and you were quite aware of those. Why not tell us? The best you can do for us is to say:
I have read these Super User questions:
- How do I do XYZ?
- XYZ: How does it work?
But I fail to understand this and that. Here's what I did … and I am stuck here: …
This way we know that:
- you did your research
- you are aware that for you these are not duplicates
- we don't close them as such, because we know you've already seen them and you've told us why they're not