Minebox was originally using those WD Red Drives and switched for the better IronWolf drives.
The point of this device is not how cheap you can make cloud storage, the point of this device is storing your data in a decentralized network where you control your private key to your data.
If you connect a Minebox to the network, add all your data and your Minebox fails... you can recover 100% of your data, that's what makes Minebox unique. In addition to this, you can earn SIA Coin for reselling your unused space on the network.
Minebox is first to market with this type of device.