Ok, I’m confident I don’t have the most hubs here, but after buying a 5th hub (2nd C8 Pro), I’ll have 5 hubs in my collection (2x C7, 1x C8, 2x C8 Pro’s).
Only 2 of them are in production use tho, one drives my radios and 90% of automation, and the other runs most of my LAN and Cloud integrations including my Solar and Battery system.
Doubt I am the winner but I have 11:
C3, 3 C4s, 2 C5s, 3 C7s, and 2 C8 Pros
I used to break out my hubs by protocol requiring a 4 production hub setup. But once the C8P came out I consolidated 4 to 2 and use one of the C7s as my development hub. So only 3 in production. This doesn’t include HA, Lutron etc that are also in production.
I used to run a bunch of Pi’s for docker containers etc, now I just run them all on my DS1921+ along with a couple of VM’s. It makes for much simpler management.
A C-8 Pro that hosts all devices (zigbee, Zwave, matter, network, cloud, etc) and handles only basic and critical functions like controlling lights and the users/codes for my locks.
A C-5 that does all the automations. I have lots of automations so the C-5 is generally working much harder than the C-8 Pro.
Additionally I have a Home Assistant hub running on a 4GB Pi5. This handles all dashboards, device stats and trends, and provides the primary interface thru which most everybody in the house interacts with smart devices or climate/lighting. This also hosts my ESP Home devices for local voice control, and also any other devices/integrations which Hubitat can't host directly.
I feel kinda poor and left behind..:). I only have 2. C8 does pretty much everything. C5 only to give me a second instance of Homekit integration. Wish I could get rid of that one and have 2 instances on the C8... hint, hint.
1 HE C8Pro - primary for Zwave, Zigbee, Matter, most automation (mesh)
1 HE C7 - primary for all things cloudy, Matter, some helping automation for the C8Pro (mesh)
1 HE C7 - for development
1 HE C7 - running 'old' firmware for development
1 HE C8 - somehow ended up with this and is on the shelf. Back up for primary HE hubs.
1 HA rPi5 - primary HA hub
1 HA rPi4 - secondary HA hub for development
1 rPi3 - helper hub for HE, for things like echo speaks
1 SmartThingsv2 - in the closet next to the C8
1 SmartThingsv3 - in the closet on top of the SmartThingsv2
There was a firmware change in there, that suddenly allowed my C4's to run much much longer.
I wish that I could point out that point, that it might carry over to the other "C's"
Only count as "supporting Hubitat, the company".
With the assumption that they are in a bin, unused.
Thank you for your support of a company, that is worth every bit of support.