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Licensing - Clustering and Mirroring - Site availability and DR

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Apologies if this is the wrong forum. I found other licensing questions dotted about various threads. I noted that there was not one dedicated to licensing and I couldn't find one matching my question.Ideally I'm looking for somebody who has [b]actually [/b]experienced this from Microsoft or has some evidence from an audit to confirm this position.There is a 4 node cluster (A-B-C-D) in site 1. All nodes are licensed.We using async mirroring to provide DR to a 4 node cluster (E-F-G-H) to site 2.In a failover from site 1 to site 2, we shutdown app the apps in site 1 i.e. no business is keyed.We change to sync mirroring and flip the mirrors over so site 2 is active and return to async mirroring.Is this a valid configuration? There is some confusion now about the "Free single passive" rule. I see licensing working as follows.Node A covering Node ENode B covering Node FNode C covering Node GNode D covering Node HWe will never run on both sites simultaneously. However the challenge has been made that an instance on Node A can run on nodes B-H, so we need at least 7 licenses.We have SA and I see the move from site 1 to site 2 part of license mobility rights.We have been to a few LARS and a couple of other third parties and still not have clarity due to the complexity.Any real world experience in this would be much appreciated.Many Thanks

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