Sorry about my shadow-spam questions! =)

But i start to like DX11 really much and the whole Shader Approach is so cool, so much power with to little code!

I am starting to understand how the whole shadow mapping works.

Depth buffer calulations and render to texture etc.
But i dont want to study this technique all day(s) long to find out that it only can handle small areas (1024 textures) that only shadows a part of my scene.

My game is a FPS like Quake so my question is:

can shadow mapping handle big scenes/outdoor scenes like this?

But i dont want to study this technique all day(s) long to find out that it only can handle small areas (1024 textures) that only shadows a part of my scene.

You can have up to 8192 size rt's, but that can be an overkill.
As Ashaman said, CSM is what you are looking for. With it, you can achieve decent look even with 512x512 shadow maps (if we take that you will use some shadow map antialiasing techniques). Idea behind it is preety simple, implementation is a bit tricky but not impossible. If you have directx sdk there's a demo of csm, check it out

Yeah, ive seen the demo, looks very good. Hard to implement though, but i will try when i get the HLSL part going up to full speed. =)