Azure flexibility in geolocation and specs

Posted by bitbitbit on Stack Overflow See other posts from Stack Overflow or by bitbitbit
Published on 2010-12-25T18:43:19Z Indexed on 2010/12/25 18:54 UTC
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Azure

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azure-worker-roles

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azure-web-roles

Hi,

I'm reading about Azure and there are a couple of things I don't understand:

If I choose put a server on Europe, why can't I move it to another datacenter afterwards?
If I choose a size for a worker/web role, could I upgrade it to a bigger one afterwards?
I think I've read that I cannot put different instances of a worker/web role with different sizes working together? Am I right? And in affirmative case, why?
What is cheaper? a big VM with a nicely multithreaded worker role or multiple single-threaded worker roles in several small VMs?

Thanks in advance.

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