A few months ago I got a good deal on 2 – 1TB WD drives and later bought a DNS-321 on sale only to find out that they don’t play well together. Also they wouldn’t TLER. Yes, I didn’t do research before buying them. (dagnabbit) If you folks would post the working drives in your 321 I’m sure it would help out other people in my situation. Thanks in advance for any info. Z