Looking for a server pc in the node 202. Needs at least 16gb of ram and 2 tb of storage. No OS needed and Budget is 600$.
PCPartPicker part list / Price breakdown by merchant
slightly more than what you wanted, but with the case restrictions that come with the 202, this should work fine.
only issue is you may need a slim profile aftermarket cooler, the stock cooler that comes with the 2200G is appx 55, 56mm tall, and thats the upper limit of what the node 202 can handle.
https://www.reddit.com/r/sffpc/comments/878q0g/wraith_stealth_height_from_board/ reddit thread discussing how to get it ti fit into tiny cases, looks possible.
Not sure if you are willing to use a different case or if you have already purchased that one but here is a complete build that will work in either case... One reason I wouldn't use the Node is because there is not enough ventilation and your PC will run hot.