Hi @criddle,
As has been described above, yes, it is fairly easy to do. As moving from Rockstor 3 to 4 requires to install the new Rockstor 4 version, this is akin to the reinstallation procedure described in our documentation. I unfortunately am short on time so I have to stay brief and concise, but the gist of the procedure would be (assuming you are reusing the same disks overall):
- Create backup config, and download it to your local machine (a different machine that your Rockstor machine)
- Turn off the Rockstor machine, unplug all drives but the disk to be used for the OS. This is a precaution measure, and always a good idea to avoid any bad surprise were you to somehow misclick and choose the wrong disk for installation.
- Turn the machine back on and proceed with the Rockstor 4 install.
- Turn off the machine, remove Rockstor 4 ISO media and plug back all disks
- Log into Rockstor, follow the first login setup procedure (using the same username might help, although I’ve actually never tested the difference from using a different one).
- Go to the Disks page, and click on the little import icon you see. Your pools and shares should now all be the same as they were on Rockstor 3!
- Now, you should be able to go to the Config Backup & Restore page, upload the file you downloaded in Step 1 above, and restore that backup… Leave it alone for a little bit, the time for the changes to propagate and most of your settings should be back to what they were.
It would be akin to the following sections in our dos:
http://rockstor.com/docs/reinstall/reinstall.html#data-import
and
http://rockstor.com/docs/reinstall/reinstall.html#restoring-configuration
with a description of what is and is not restored here:
http://rockstor.com/docs/config_backup/config_backup.html#config-backup
Hope this helps, and sorry again for having to stay that brief and concise.