Same CAS Array Exchange 2010 (HLB), with OS Windows 2008R2 and Windows 2012.

Hello,
We have a 10 node DAG (Exchange 2010 SP3, Windows 2008 R2), with 2 CasArray.
We are planning to add news (multirole) servers and create a new DAG (Exchange 2010 SP3, Windows 2012) in this infra, in the same AD site, to migrate all mailbox from the other DAG (Migration from virtual servers to physical servers).
So we use the same CasArray (HLB, with F5) with différent OS version, during the migration time (1 month or more). I haven't found anything that say it's not supported or can be problematic.
Have you feedback or advice?
Thanks,
Sébastien

Hi,
Based on my knowledge, there is no need to deploy a CAS array with CAS servers running on the same Window version. The version can be different.
After a Client Access server array is defined within an Active Directory site, all Client Access servers within that Active Directory site are automatically part of the Client Access server array.
Best regards,
Belinda
Belinda Ma
TechNet Community Support

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