I was using my OMV-based NAS for around 1 year, sadly after rebooting the system 2 days ago, it stopped seeing my drives, while using a USB HUB.
Once I connect them via a noname passive USB hub, they work! (but there are power issues too)
SBC: NanoPi Neo3 1GB (+justPi 3A 5V)
HUB: Unitek Y-3089, Unitek H1111D - system won't boot while connected. Once connected after booting, OMV won't detect any LUKS headers. Sometimes it detects them, but then I see
"communication failure" and "An error has occurred".
I installed the newest Armban and OMV on two identical Neo3 SBCs - the same problem.
The HUBs work well with Raspberry Pi.
Buy another HUB?