Drive configuration dl4100 8tb

I am looking at buying the dl4100 8tb and wanted to verify the drive configuration as received is (2) 4tb drives. I will probably add the 3rd drive immediately after initial setup to use raid 5. Also from what I have read, the unit works fine with win 10 and plex is now working for streaming.

Thanks

Correct; the 8TB unit comes with 2x 4TB disk units: