Hi All!
the following is my current omv build mainly used for plexmediaserver and easier access to the files that plexmediaserver uses
https://imgur.com/a/mbd8CpC (i uploaded the images to imgur because they were too big)
Specs:
Core 2 Duo E6550 (2.33GHz)
3 GB RAM
230GB Drive for storage
Toshiba 16GB usb for the OMV install