I'm going to buck the nerds and say I wish Drobo was back. I love my 5N, but had to retire it as it began to develop Type B Sudden Drobo Death Syndrome* and switch out to QNAP.
It was simple, it just worked, and I didn't have to think about it.
* TB SDDS - a multi-type phenomenon of Drobo units suddenly failing. There were three 'types' of SDDS I and a colleague discovered - "Type A" power management IC failures, "Type B" unexplainable lockups and catatonia, and "Type C" failed batteries. Type B units' SOCs have power and clock go in and nothing going out.
My 2nd generation Drobo that I got back in 2008 is still chugging along. Haven't had to replace a hard drive in 10-12 years either. I love it even though it's super slow by today's standards. Been meaning to retire it for years, but it's been so rock solid I rarely have to think about it.
I still have two Drobo 5N2 NAS boxes going strong. One is the backup for the other. I really wish someone would take up the Drobo-like simplicity and run with it.
It was simple, it just worked, and I didn't have to think about it.
* TB SDDS - a multi-type phenomenon of Drobo units suddenly failing. There were three 'types' of SDDS I and a colleague discovered - "Type A" power management IC failures, "Type B" unexplainable lockups and catatonia, and "Type C" failed batteries. Type B units' SOCs have power and clock go in and nothing going out.