I tried various products like Connected Data, but settled on Synology about 3 years ago. I have my iMac Pro at home connected via 10gb ethernet to a Synology DS1817 (8-bays) on my home network. The critical files, including a Thunderbolt RAID drive containing my image files, are backed up realtime by the Synology Drive application to the Synology DS unit.
The home LAN file transfer speed, as tested, averages 329 mb/s write and 481 mb/s read on the 10gb LAN connection which operates through a 10GB switch on my network. Not bad for back ups. My Thunderbolt 2 connected OWC ThunderBay 4-bay RAID tests at 457 mb/s write and 533 mb/s read speeds.
The home unit backs up realtime to a Synology DS1817 installed on my office LAN. My office is about 10 miles from my home so no more "sneaker net" to take back up drives off site.
I use enterprise quality 10TB NAS drives from Western Digital on all of the Synology devices. They have been very reliable.
The Synology devices also host my surveillance cameras systems installed at my home and office. They back up the video files to each other, real time, using the free Synology software. It all works very well.
I highly recommend the Synology products for their reliability, capabilities and excellent "human" support.
Regards,
Bud James
Please check out my fine art and travel photography at
www.budjames.photography or on Instagram at
www.instagram.com/budjamesphoto.