RAID Rebuild repeated - Causes and effects?

My barely new MCM yesterday night become inaccessible, while it seemed to be on high activity. I let it run, and this morning I got the notifications about the RAID being rebuilt, 3 times! (messages below). This can’t be very good…

Question 1. what event corresponds to 2210? (I tried searching support already…)
Question 2. what caused this, and why three rebuilds?

Any suggestions?

Following events are generated on your WDMyCloudMirror.

Event title:RAID Rebuild Completed

Event description:RAID rebuild completed.

Severity:Info

Event code:2220

Event time:01-13-2016 10:48:03 AM

Firmware version: 2.10.310

Event title:Rebuilding Volume

Event description:Rebuilding volume 1 time in progress: 0 minutes

Severity:critical

Event code:2210

Event time:01-13-2016 10:48:02 AM

Firmware version: 2.10.310

Event title:Rebuilding Volume

Event description:Rebuilding volume 1 time in progress: 1152 minutes

Severity:critical

Event code:2210

Event time:01-13-2016 10:47:01 AM

Firmware version: 2.10.310

Event title:Rebuilding Volume

Event description:Rebuilding volume 1 time in progress: 61820 minutes

Severity:critical

Event code:2210

Event time:01-13-2016 10:46:35 AM

Firmware version: 2.10.310

Hello there,

Have you tried doing a diagnostic on the drives through the dashboard? this is not normal to have the raid rebuild so many times in a short time. Perhaps it could be one of the internal drives having issues, this is why i advised the diagnostic of the drives. Hope this helps.

Thanks ArMak.

The diagnostic says “Healthy” for both drives. Disks are “good” with temperature 50/51c

So I guess everything is normal.

BTW, don’t know if that’s relevant, but before I noticed the anomaly, I was performing a search with Plex to add all my music library.