Dual SATA-II Interface Card question and NAS question

[Luke]

So, OMV is mostly just a WebGUI admin system. It does a bit more than that, but the important bit is that it makes it easy for a beginner (and not only...) to set up all the services you want or need (including RAID, which you mentioned). RDP is remote desktop which you can access from your computer, phone, tablet.,etc. You can also copy files over to it and back from the computer easily if you have your home folder shared.
For example, in the linked picture below I copied over the aosc.png over from my computer to the RockPro64 and it showed up on the DRP desktop.
Just so you realize, DRP isn't as fast (nowhere close) as having the RockPro64 plugged into the HDMI directly - but its much more convenient. Obviously it also depends what you want to do on the desktop.

The other option you have is to set up the LXDE image (a type of desktop - there are many others available for Linux) and from there create the shares, and install the services you need. Since you are a beginner you may find this more difficult than using OMV - but it will be a learning experience.

As for other questions, frewind answered them. Regarding the SD/ eMMC, when you flash an OS image to any bootable medium it gets wiped; not sure if I understand your question.


Picture of RDP desktop accessed on my stationary computer: