you can have 2nd hopper 3 and there no require "amount" of joeys you just have to buy the 2nd h3, now getting them sell you one is another story. I went threw Loyalty department numbers and 3 + people before got some one that would Sell me the 2nd hopper they even sold to me for price I found it for and authorized dealer cause I told them I was gona buy from there just send the tech out. I have 2 h3 system with 1 joey4k attach to each payed for 2nd h3 and they send guy out to install it. this took me 6+ months to get this done like 3+ years ago, it should easier now maybe?
Each hopper get it own timers and each joey attached to said h3 shares those timers, properly setup both h3 can see each other recording under "other devices" so can the other joeys. There is lag time between h3 reboot before each h3 see each other device.
Dont know if setup has changed or if there better solution but its DPH42 switch and two hybrid solo hubs (support 2 client) im my setup. also believe you need certain type of LNB or it wont work. as I remember dish guy tell me that is the "wrong" lnb setup and that why I was having issue. and I told him dont change for what he thinks was supposed to be there. you will be just putting what there back up. he did it any and 3 + hours later and 4 conversation later with other tech he was told put the original lnb back cause only one that works.
Again I dont know if they released new switch hubs lnb that worth with 2 h3 system heard Rumors they did never look into it cause every time on tech comes they want take all down despite tell them no , they do and then they have put back cause they couldn't get it work with the way the put back.
Not may tech trained to do 2 h3 systems, I was told by atlest 2 techs dish dont like train tech for that and they tech had to ask to get training, and was only senior tech got that training. how true this is i dont know.