I currently use a 2010 MacBook Air as a server with a Western Digital external drive. It replaced a very old Mac Mini, it was a early intel version. The ram was max out at 2 gig's. The Air was my personal computer. The screen is only 11 inches and had become too small for daily use. I upgraded to a larger screen computer, gave the still perfect Mac Mini to my sister and transferred music server duties to the Air. Also the Air has only 2 gigs of ram.
With regard to iTunes music playback, no real listening change. Yet, Screen Sharing and all remote functions improved. Every click is quicker.
Good Luck
With regard to iTunes music playback, no real listening change. Yet, Screen Sharing and all remote functions improved. Every click is quicker.
Good Luck