Drives not recognized, suspect backplane failed

Network Attached Products Drobo B810n
1

I came home today to find the Drobo 5n in a critical state. The bottom two drives disappeared from the array. The unit was in data protection mode that would last over 24 hours. I started copying data to a computer, when about an hour into it, the remaining 3 drives disappeared. Now Drobo claims there are no drives installed.

I powered down the unit, and waited a little while before powering up again, but it still says no drives installed.

What is the best way to get my data back?

2

Other posts in the community similar to this issue have pointed to a bad power supply. That would be the first thing I would try as it would be a pretty easy fix. Otherwise, it might be that the backplane is dead. You can try your drive pack in a different Drobo 5N/5N2, but if the data protection had already initiated, it may be too late to recover. Also, locating another 5N/5N2 is really difficult these days.