As per this video ( I never tried it myself though), you can have ZFS on OMV if that is what you are looking for in TrueNAS. Hope this helps (https://youtu.be/rxEyR30iNt0)
Got it. I will install OMV. Another noon question is, for OMV they suggest to use a minimal install. Does radxa os has a minimal image? As I see that the rsetup utility seems very helpful in SPI and eMMC flash processing. Or is it possible to do it in Armbien too?