In reply to kevin stephens:
I was mad keen on Synology, but have recently gone off them a bit.
Mine works fine and I've had it for 6+years, I like their Cloudstation, which is like any cloud system, but in the house.
I can synch, loads of files between many devices and any changes are copied to every device. Great for me because I do work away from home on a laptop and it's automatically updates when I get back home. I can also copy useful stuff to my phone and have that update too.
Unfortunately, on Android, with them updating their "permission" strategy, it needs Synology to change their software to allow access to the SD card. They haven't done this so I now have to save everything to the phones memory. This has been brought up time and time again on the Syno web site, but they don't seem to care.
Other than this very annoying thing, for me at least, the hardware seems pretty good.