sDRS and thin provisioning (+ vCloud Director) - questions

Hi,

I read these articles:

1. http://frankdenneman.nl/2012/01/24/storage-drs-initial-placement-and-datastore-cluster-defragmentation/
2. http://frankdenneman.nl/2012/10/01/avoiding-vmdk-level-over-commitment-while-using-thin-disks-and-storage-drs/

about thin disks and Storage DRS. Now I know about PercentIdleMBinSpaceDemand setting MaxRecursionDepth setting and few other things.

But I still have some doubts. To make it all clear I have some questions:

1. All storage recomendations in sDRS cluster (based on thin disks) calculate used space (+25%) but not provisioned space?
2. Datastore usage on disk alarm check only used space not provisioned space?
3. Whenever LUNs based on used space exceeds utilized space parameter then my sDRS cluster run storage vMotion?
4. How sDRS choose LUN when I create new VM? With the most free space (parameter free not provisioned)?
5. Automation in sDRS only works with LUNs with this sDRS cluster? I mean when I have 2 clusters and in one of them I don't have free space my sDRS cluster can't migrate VM to another cluster?
6. How vCloud Director choose LUN based on sDRS cluster?

Thanks.