I have a local fireproof NAS by IO Safe (http://www.ronmartblog.com/2015/02/review-iosafe-1515-nas-powered-by.html - called the 218 now) and connect it to my router via Ethernet cable so it's fast enough to act as a hard drive.
I actually wrote about this topic on Scott Kelby's blog a while back - https://scottkelby.com/its-guest-blog-wednesday-featuring-ron-martinsen-2/
Like Scott, I had a Drobo disaster that made me move away from that platform and go with Synology. While I did have one Synology scare and wasn't impressed with their response either, my two Synology based NAS have been very reliable and serving me well. My only problem is that I've filled two up despite 5 x 6TB configurations in both.