On Dlink's product specifications page it says this:
Supported Hard Drive Types
SATA I/II: Support Hard Drive Capacity 4TB (or Above)
3.5” Internal SATA I/II
It does seem amazing that a company the size of Dlink could not get a couple of these hard drives directly from the manufacturer as either a courtesy to enhance their sales or if necessary purchase a couple and test them themselves for compatibility. Surely this would enhance Dlink's product value. Wouldn't this be a WIN for the manufacturer, a WIN for Dlink, and a WIN for the end consumer. Maybe I am the just a bit dull but I don't get it at all.
Well, these new HDDs were "just" released. Let's wait and see what happens. . .
Keep in mind that it took quite some time after 4TB HDDs were released for D-Link to announce that 4TB HDDs were supported.
This is an assumption on my part, but the industry standard AFT addressing schema is designed to accommodate HDDs of just about any capacity. I would assume that NAS designed to fully support the AFT schema would also support HDDs of any capacity, at least as a standard configuration (RAID implementations add another layer of complexity). Just a thought.