I think any answer to this particular question will be as unique as the person responding the query.
As you are aware you have a complete copy of your project on your hard drive. You have the V3D Project folder that you have established and you have your 3d applications files. If you make a backup of your hard drive or just these folders you have all you need.
Now there are some things I recommended:
With each project I like to store a ReadMe. This Readme contains the version of the 3D app I used, the V3D addon version, along with the version of any other software used including the OS. The reasoning is you may need to come back to your project, no next week but in a few years and either update it or restore it and well. If you have these notes you can completely recreate the environment in which the app was last modified in.
Now in most cases this is rarely an issue. But Software does, change legacy compatibility is always something that has to be considered and V3D and our 3D apps are no different.
The simple answer for a one off. Go to your V3D Applications folder and zip up the files you want to save and copy them somewhere safe. You can always just put them back in to your V3D Applications folder.
For a more long-term approach, backup you 3D projects and your V3D Application folder daily and move that to a long-term storage weekly and to offsite storage once a month or so.
Another thought to consider is never having your 3D project files and or V3D files on your system drive. This way your projects are on a data drive and any issues with your system or need to reset are never a problem for your critical data.
But the basic answer…just copy the V3D applications folder to another drive…zip if if you need and then put it back after the reset.
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