Here is my story:
OMV5
Case: NODE 304
MB+CPU: Asrock J5005-ITX
MEM: 8GB Kingston
SATA Controller: AXAGON PCES-SA2 (ASMEDIA)
HDDs: 500GB for system + HOME partition, 3TB for media, 2x1TB for RAID (backups) - will change
PSU: some old 300w Fortron (CAPS replaced)
Photos in attachment (sorry for fast photoshop - mess on the table