4100 JBOD RAID not showing all volumes

I’m very new and thought that going with JBOD RAID would allow me to use each of my 4TB drives as it’s own storage. I want to see them both on the network but it seems Volume I has filled up but I can’t “get” to Volum 2. How do I do this? I don’t care about backup as I have a 10TB external for backup. Plus, it’s just movies so nothing that can’t be replaced.

The capacity dashboard doesn’t work but you can create shares on the 4 volumes and map those shares in your file manager.

Thanks but I can’t see a way to mount a new share on Volume 2. Shouldn’t JBOD RAID mean that I should have Just a Bunch Of Drives?