I currently have a HR-44 with three HR24's and one Genie Mini. The HR-44 has an external 2TB hard drive. I'm contemplating upgrading to a 4K TV and replacing all my boxes with the Genie 2. I know I'll be downgrading from 11 tuners down to seven and I'll also be losing storage. Can you add a 4TB external hard drive to the Genie 2?