Anyone know if there are any options for installing a USB hard disk to the Vigor 2862. I'd like to use a 3TB USB disk, but I see were limited in partition type and file size. Any workarounds for adding an alternative format disk with higher limits?

Infact, does the 2862 even do DLNA?

If you want a DLNA service, you are probably better off with a RPi and running something like miniDLNA on it. I very much doubt that the 2962 has a inbuilt DLNA service. Past experience has generally shown pretty poor performance when accessing USB storage on a 2820 and 2860.