installer openmediavaut

Hi,

My configuration
OS: Ubuntu Server 18.04 “Bionic Beaver” LTS (64bits)
Xeon E3-1245v2 server (4c / 8th) - 32GB DDR3 1333 MHz - SoftRaid 3x2To SATA
Reverse
Backup Storage: 0/100 GB

I would like to make a media center with jellyfin in my 1st disc I have a media file which contains all my films and series.

I would like to install openmediavault to manage my other disks as well as external disks.

content of my config is this possible? and how to do without erasing all my data?

thank you,