Yes Will, you hit the nail on the head. I am using these 9300s in my data center for access alongside a couple of comparatively expensive 9500 virtual stacks for distribution. Perhaps we could afford the higher end hardware if we weren't forced to bu...
It seems there is a bug with 17.09.03 (maybe earlier versions too, but mine shipped with this version so it's all I tested) preventing fast reloads and xFSU. Once I upgraded to 17.09.04 (without xFSU), I am now able to do fast reloads and also tested...
It's a shame you never received a response to this, as I am having the same issue trying to xFSU from 17.09.03 to 17.09.04. I've opened a TAC case so will reply back if we get anywhere on this.
Did you ever find a solution to this problem? I have the same issue going from 16.9.5 to either 16.9.6 or straight to 16.12.05b. It only happens on one of the seven 3850-12X48U-S I have. I had to revert back to 16.9.5 using emergency-install via romm...