So far I've updated both VPN dbs and all four active Landscapes dbs to the latest codebase, meaning that they will run on both PHP 5.6 and PHP 7. For VPN and the Powell St db, I've put the following stuff in .htaccess files to ensure that we're actually running on the new server and taking advantage of PHP 7, because the speed payoff is significant:

setEnv UVPHP_VERSION 70

RewriteEngine On
RewriteBase /
RewriteCond     %{HTTP_HOST} ^hcmc\.uvic\.ca$ [NC]
RewriteRule     (.*)  https://webserver2.hcmc.uvic.ca%{REQUEST_URI}

Once the new server takes over from the old, we'll have to remove the redirects. I have one more database to port, the jsrDocs one.