Drives connected via Dual Dock keep ejecting

[MoodyM]

I had 2 spare 3.5" 2TB internal drives, new, so I bought a dual dock/enclosure to put them in to connect it to my Mac Mini for an easy 4TB of storage.

I bought this one, as it claimed to be Mac compatible:

http://www.amazon.co.uk/dp/B00D1NR9MA/

All seemed well, both drives show on my OS X desktop as 2 separate drives. However after a few weeks, I noticed they had both disappeared from the desktop in OS X (i.e. ejected). There was no usual OS X warning about not ejecting the disc properly, so I assume they were ejected by the OS.

The unit was still powered up ok, so after unplugging/plugging back in, they showed up again, but the same thing happened after a week or so.

I tried a different USB3 cable, same problem.

I contacted Inateck, who said it must be faulty and kindly sent me a new unit. Exact same problem.

Any idea what's going on?

Thanks

 

[jbarley]

Seems to be a very common problem as shown here in this google search.
Lots of stories, not much for solutions.