Reviewing the Support Bundle (specifically the RaidEventsLog.txt) should assist in review of the issue.
A sequence of relevant 'Event Descriptions" showing a successful rebuild of a detected error might be similar to the below:
Event Description: Rebuild complete on VD 00/0
Event Description: Rebuild complete on PD 07(e0xfc/s1)
Drive Cache settings restored after rebuild for PD 07(e0xfc/s1)
Event Description: State change on PD 07(e0xfc/s1) from REBUILD(14) to ONLINE(18)
Event Description: State change on VD 00/0 from DEGRADED(2) to OPTIMAL(3)
Event Description: VD 00/0 is now OPTIMAL
If the RAID rebuild was due to a transient error it may not be repeated.
If there are recurring warnings that do not cease (or return within a matter of hours/days) this may require further review via a Support Bundle.