Server A is running OMV 4.X. OS is on SSD. Data on 2 mirrored NAS Drives.
OMV 4.x is solid as a rock. Hardware is a dated Fujitsu Server with an Intel Core i3. Hardware performance is not an issue other than it's a large box and a little noisy.
My proposed OMV 5.x box is an HPE Microserver Gen 10 x3421
While the new hardware is not super-high powered, it is more than enough, smaller and quieter (and newer even though I bought it used).
My approach to this upgrade is based on the observation that OMV 5 is so significantly different than OMV 4 that an "in place" upgrade is challenging and disruptive. I would rather practice building my OMV 5 environment on my new box and then physically move the hard drives (data only) from Server A to Server B. My assumption is that OMV 5 will have no problem seeing the Raid-Mirrored drives.
The drives are Red NAS labeled and only about 1 1/2 years old. I don't see the need to buy new drives for this project.
FYI - I've installed OMV 5 a couple of times on the HPE as well as another spare box - and played with Plex in Portainer. Plex is running in Docker on OMV 4 on my current box.
Bottom line - is this a good approach? What would you do differently?
Thanks for your suggestions.