After enabling Pool Pairing in the Topology
And confirming the 1:1 Pool Pair.
We publish the Topology. We immediately received the following error.
Back into the topology builder to try and reinstall the failed database configuration.
Instead of clicking next to "Automatically determine database file location" click Advanced
UPDATE: After some additional investgation found that the Standard Edition Servers had aprox 65GB disk space free. As per the Microsoft KB Article
Installing a Lync Database will fail if the server has less then 72GB Free disk space.
After selecting "Use Default instance defaults" click OK, then next to proceed with the database installation. And Success!
After installing the database on the backup pool, continued steps configuring Pool Pairing continued.