I have the Drobo 5C unit connected to a Mac mini Server (Mid 2011) running macOS 10.13.6, and the Drobo was running out of space (2x 2TB drives and 3x 4TB drives). No problem, this is why I bought a Drobo. So I replaced one of the 2TB drives with a 4TB drive and it starts doing data redistribution.
About two weeks later, it’s still doing it. Sometime around then, I being the buffoon that I am decide it’s taking too long and try restarting it (in retrospect not sure why, but that felt like long enough), so I just click the power switch, wait for all of the lights to turn off, and then click it again to turn it on (never unplugging it). It correctly displays how full it is with the indicator lights, and it just resumes data redistribution, so I figured that didn’t break anything.
About two months later, it’s still doing redistributing… This whole time, the drive has been inaccessible, mostly not connected to the computer but occasionally popping onto the dashboard and disappearing again. I decide that the data that isn’t backed up on there isn’t very important, and the important stuff exists elsewhere, so I reset it a few days ago. It took some emotional effort, but I think it was the right decision (I’ve had it longer than the included warranty).
Now it’s empty and has larger capacity, but it disconnects from my computer every so often. When I start a transfer of a lot of files, I usually have to go resume it later since the disconnect stops the transfer.
My concerns are:
What if this happens again? Is it guaranteed to finish redistributing if I didn’t power it off? What if there’s a momentary power outage?
Also, is the periodic disconnect a result of the drives? Or is this a problem with the device itself?
Any help is appreciated