I have 6
3 production
2 development
1 beta
The Production set are:
- Downstairs, ZWave only -- 96 devices
- Upstairs, ZWave and Zigbee -- 69 devices
- Coordinator, Internet facing services and devices such as Alexa, Google, Weather, Dashboard -- 164 devices (This is the result of 'mirroring' of the first two.)
This question has been answered in much detail, but the short version is:
- eggs-in-one-basket risk reduction,
- performance