Hi,

It might work, as the expansion unit just increases the capacity of the the primary NAS. Is it possible to loan one to try it?

One question, have you considered swapping out the drives for larger capacity ones? 6TB are available and 8TB have just been launched by Seagate.

Regards,
Carl

861v6+ID40, HD621, 8000.2, 7200HC, 7200.2, SKYQ Silver, PS3, PDP-LX6090, QNAP TS870-Pro (8*6TB), Roon, iPadAir2.
[In Reserve] C15, MD600 (2*3TB), TwinStore RM (2*2TB)