Adding new rSeries Tenant to existing Device Group

F5 nomenclature: 

F5 hardware device is not added to an HA group. An HA group is comprised of configuration objects.  The state of the objects in a HA group can cause an redundancy active device become the standby device.

You add F5 devices to the Device Service Cluster (DCS). You have to establishing trust with the other devices in DCS. The trust is set up by adding the new device to the device trust. 

Once the new device is in the DCS you can add it to a device group. You then can attempt a configuration sync. The sync may fail. The shared configuration may be dependent on device specific configuration that does not exist on the new hardware.  

Establishing device trust

Working with DSC Devices

K13350051: DSC worksheet

K000150141: Setting up ConfigSync and failover addresses and adding a device to a device trust

How I refresh F5 hardware:

I do not add a new F5 hardware platform to an existing DCS. I create a new DCS that only contains the new hardware. Then migrate the configuration. This what I have done since TMOS was created.  

Is F5 now supporting DCS with mixed hardware platforms? My personal best practice has been to only allow the one hardware platform in a DCS. I am biased after having to fix many non-functional DCS. 

-Matt