Just purchased a DNS-321 and am using two Seagate 1.5tb drives in it. Had to format them one at a time, separately, then RAID them to get them to set up. Observe, however when I'm transferring files to it that only the right-side HDD icon indicates activity, i.e. flashing rapidly. The left-side HDD icon only flashes once every several seconds, if at all.
The web based utility indicates RAID1 is there but shouldn't both icons be flashing equally if this was the case?