I like having stuff high available. Everybody who works in IT knows it: Everything can fail and it most likely fails when you really need it as written in Murphy's law: "Anything that can go wrong will go wrong". Therefore I decided to cluster my UniFi Controller today. For sure it does not need to run on a server and can be started locally for configuration. But I like to have some nice stats and graphs which are also provided by the Controller and therefore it needs to be up and running constantly.

It can happen that you add some big files to Git (binaries, documents, images, ...) or some "private" files which should not be in git. Removing it from your filesystem with a single commit will just remove the file in the working tree, but Git does not fully delete a file when removing it via commit. Maybe you want to restore it. That's why Git keeps it in his history.

A lot of people saying that it is not possible to mount a vdi image and to access the data in there. But it is. Just use the right tools and know how to do it.