I am defining a backup policy for the following. Given the characteristics of the following (in my scenario), what would be the ideal backup plan for each (retention rate and backup frequency)?:
Active Directory (including the secondary DC) - AD is about to be heavily used and updated with new users etc
Monitoring server (running built-in SQL Server) - of course, always writing to the database and the config will change
VMs which are built at will by users for product testing (product is deployed on these VMs, so we can test the product/run SQL against the SQL Server this product installs) - SQL Server is very important for daily tasks and testing new releases
As the product is desktop virtualisation, we are provisioning a lot of desktops to mimic a real world situation (so these desktops have apps etc installed from a VMWare template). For each template which a VM is made from, the VM will have data/apps etc installed. This too could change very quickly.
There is a lot of information about media rotation on the internet, but not when to use one over the other.