Drobo DR/Sync


So I’ve got 2 Drobo b810N with 8x4TB Drives

I’ve done the initial DroboDR Sync and it’s been successful for a few days now.

What I’m hoping to do now is take my Target Drobo offsite and have it start doing the syncing remotely, I know I need to open up port 873 (rsync)

But what other ports do I need so that Dashboard etc can access the remote (target) 810?

Also with it setup for DroboDR, I’m assuming the second(remote)unit can not be used for anything else?

(i think it would be best to not use the 2nd, remote unit for anything else, and that ideally it would be similarly-sized as the source)