Cross NAS manufacturer data recovery is possible, but not with the My Cloud Home Duo (MCHD) as the host because the MCHD is running a features limited OS (OS4) that is lacking most of the functionality of a NAS such as SSH.
If you insist on using another NAS host to recover the data from the QNAP HDD, try reading this fine example from this subforum, using another NAS (not Western Digital) as the host:
It is often cheaper ($50 to $100) and easier just to pick up a PC with 2 to 4 SATA onboard controllers and run a free Linux data recovery ISO.
