Choosing VM as high availability for BizTalk's SQL Server databases

Hi,
I'm lloking to choose the architecture of our BizTalk 2013 solution.
The application server will be build on virtual machines, but I still have interrogation about the SQL Server.
Is a SQL Server on a VM supported for BizTalk 2013 ?
Because in case of physical failure, the VM moved to another server can we considered the VM as a solution of High-Availability ?
thanks for your reply.

When the SQL VM fails over what attributes of the server will change? If everything including the server name, the mapped SAN locations (for Databases) and/or the versions of SQL will remain the same then it will behave like a temporary network outage between
the Front-end and the SQL.
If however, the failed over VM has a different set of mapped location for DB then you would need to establish a BizTalk Log Shipping between SQL VM 1 and SQL VM 2. In this scenario, the recovery will require time and cannot be automatic.
A word of caution though. If you have SLA's pertaining to transactions/messages per second with the customer then you might want to evaluate having dedicated boxes of SQL. The SQL Licensing is PER CORE and in a VIRTUAL ENVIRONMENT all the
CORES have to be licensed since the Virtualization does not permit you to BIND the VM to a specific set of CORES. The same would apply for your BizTalk Servers. This just might work out costlier as opposed to the dedicated server environment.
Regards.

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