IStorage Pro 8 bay raid 5... GUI is reporting all discs as normal and the volume seems to be working ok... however when I’m copying data to the raid only 7 of the blue lights on the drive trays are blinking...drive 5 isn’t blinking... could this be as simple as a bulb in the tray not working... the drives are new Toshiba 8Tb and I’ve been running the box for over a week with no issues apart from this annoying scary thing