You are paying for 4 TB of storage for example, but you actually only get 3.5 TB of usable space...

Works great and loving the space on this.

ACTUAL HARD DRIVE SPACE

Please understand that in the default configuration the actual usable space is about half of that, as the drives are set up in a RAID 1 mode

fails, so you have about 3 GB of usable space, not 6.

It's not that this drive doesn't have enough space to store your files

The actual usable storage space that shows in the drive is 5.4 TB.

Still utilizing WD 'efficient' disks, the My Cloud Home Duo ships in a redundant (mirrored) setup that gives you 2TB usable space (of the 4TB total)

This one gives you almost no control over setting up static IP’s, or using it as anything other than a backup (which it has to remain connected to the internet to even use.

avoid this unit at all costs, It will not work as you expect a network drive to.

The app interface is clean and simple, but very limited as to what you can do within, and not very intuitive to navigate