RN424 - Management service is offline

Based on StephenB's advice, I pulled the 3 8Tb disks from the RN424 and inserted a new single disk for testing to see  if there was a hardware problem, After a Factory Reset from the boot menu, I went through a quick X-Raid setup. I was then able to log into Frontview without issue. All seemed to be working as expected. I even restored a configuration backup and found no issues. No apparent hardware, network or software issues.

The issues I had prior to the new disk & Factory Reset were fixed with the test disk:

 - extremely slow performance.

 - inability to get into Frontview.

 - Power Button not working correctly. Had to do a hard shutdown.

 - two attached USB drives not showing up and not accessible.

 - although shares were accessible on the network, snapshot folders appeared empty.

 - I assumed snapshots and backups were not happening.

 - I tried several reboots, but it only booted to 99% and hung.

 - Tried a OS-Reinstall but it did not appear to take.

I then replaced the test disk with the original three 8Tb disks. Powered up the NAS.

Surprise, surprise! The NAS booted up 100% and all seems to be working properly.

The only thing I did different than normal was to not turn on the two USB drives until after the NAS had completed booting up. But I have no reason to suspect that as a cause. Been running now for 5+ hours.

So thank you StephenB for your help. I was expecting to spend the weekend doing a factory reset with the three 8Tb disks and restoring 8Tb of data from backups.

Crisis averted . . . cause unknown . . . hoping this was a 1-time event . . . grateful for StephenB and all he does.