Setting-up SQL Server AlwaysON Across Different Domains

Recently, I got a request to migrate servers which has SQL Server 2012 with AlwaysON setup to new environment. The new environment resides on a different subnet and has a different domain. There will be trust between both the domains.

Now the question they have is, can we setup AlwaysON between existing servers on one domain and new server in another domain?
No, this scenario is not possible, AlwaysON can only be setup between servers of same domain. Windows clustering which is a pre-requisite for AlwaysON setup can only be done between servers of same domain, so we are blocked at the very early stage itself from proceeding further.

Hope this clarifies someones doubt under same situation.

 

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