I have a Mac mini in the loft room with my Synology NAS with two bays.
I stream to Apple TV in the lounge which is hard wired to my network.
Also stream to Hi-fi in another room using Airport Express.
My 1tb hard drive in the synology is nearly full.
Which would be best to do buy a larger hard drive and use up the empty bay?
Or buy a large external drive usb 3 for speed and flexibility?
I don't want any lag when streaming, am I likely to get that with a USB 3 external drive?
Or is there a better solution?