I loved most of Sun and Moon, but I was still weirded out by ash on this episode. He has always been "stupid", but not that kind of stupid, It felt like one of those parody abridges series you can see on youtube. And the music... i'm sorry but I feel like every new soundtrack of this series is worse than the previous one. The songs from the first episodes were amazing but it was all downhill from there.
That being said... the "backup" discussion is a bit exagerated, the fact that the episode represented erased files with folders with a little cross over them should tell you the kind of knowlegde the series expect from the audience. I know some of you hate the "its a kid show" argument but... well, that's it... its a kid show, don't think much about it. We are adults, we know how servers work, kids mostly don't.