Power outage mains supply

I’ve recently experienced a power cut to my property where the WD Cloud Mirror is installed.
I was away at the time, but on return noticed the blue lights were flashing.
The top light is solid on and the two lights below are flashing in access mode.
This has been going on now for 2 days. Is this normal, I assume the discs are ‘rebuilding’?
The H/D discs are 3Tb each and are about 50% full.
Any help would be much appreciated.
I’m still able to access, make folders, backup or download as normal but the continual flashing lights are disconcerting. Maybe if they are still flashing at Christmas I could incorporate them into the decorations.

Hi there, in this case try to run a system diagnostic test on the device.

https://support.wdc.com/knowledgebase/answer.aspx?ID=10427