It comes with dual Thunderbolt ports that allows you to daisy-chain up to six My Book Thunderbolt Duo drives (48 TB using six Thunderbolt Duo 8 TB drives) or other devices such as monitors, media players, and video / audio editors.
My D-Link DNS-323 decided to give up to me 2 days ago and I have to find a temporary storage to transfer the data from my DNS-323. Unfortunately, I do not have enough space on my computer to store the data and my old external HDD has only 300GB and it is running on IDE. So I decided to get a new external storage as a temporary solution before I get a new NAS or if D-Link is reading this post would be so kind to RMA my DNS-323 (the warranty is over by 3 months).
More on the death of my DNS-323 in the upcoming blog post.