VirtualBox on NVME SSD

[Romario]

Hi everybody. Two SSD disks are assembled to JBOD and a pool. I created a folder on this volume "virtualbox1" because the system refused name of folder "vitualbox" (the folder is present but in another places). The VM does not want to go further into the subfolders of "virtualbox1" (I played with rights but it does not help).
1. How can I transfer Virtualbox files (disks) to this fast volume?
2. Where is it better to store VM disks in general?
Thanks in advance.