Add existing Hard drives to TrueNAS VM

[SVdP Academy]

I've created the TrueNAS using Oracl Virtualbox on my main server. My main server's OS is Linux

My main server already has 3 physical hard drives that are mounted. They were being used as a NAS with Samba. They are still mounted.

Is there a way that I can add them to the VM so TrueNAS can see them and make pools with them without unmounting them from the server?

Is this a TrueNAS question or a Virtualbox Question?

Thanks