Hit and miss, I'm new to NAS's and maybe some of the blame on me. Set a timer on NAS, turn off at midnight which it did. I turned it on shortly after. 1 of my USB drives (from them) failed to be available. 1 of my drives lost half it's data... somewhere...
Update. Apparently (God knows where written) this device should not be used with anything with a USB hub built in that included the two I brought. D5-300C and D2-310 are not compatible.
After buying a Synology my advice is to go Synology.
Had 2 x Crucial MX500 1TB SSD in it for awhile. Failed SMART and it's system popups. Tested on PC, fine.