Beware of interdependent resources on your Protected Nodes. For example, if your mail server depends on a Domain Controller to function properly, both machines must be protected by onQ. Similarly, if there are critical functions that depend on DNS, ensure that onQ protects your DNS server too; otherwise, those functions might fail. onQ itself generally maintains critical IP addresses in the onQ Appliance’s HOSTS file.

In the event of an HA site disaster, the boot order for your recovery nodes must take into account these dependencies. During the installation workflow, you will be prompted to configure these startup dependencies using the onQ Portal.