If you are using our Software RAID Monitoring then you have probably already noticed that you can configure two different types of warnings under this section:
You can select to be warned when RAID health is degraded or when the RAID health is critical.
In this article we’ll go through what each of these warnings mean.
RAID health is degraded
This warning will include cases such as when the RAID is performing a check or resync. In these cases the health of the RAID is most likely healthy, but it could also mean that one or more drives have gone out of sync, so the check/resync is automatically performed by your system in order to confirm/restore the healthy status.
We’ve included this under ‘degraded’ health because under such conditions the ‘healthy’ status cannot be 100% confirmed. Furthermore when such checks/resyncs are performed on the RAID disks, your server may even experience slower than usual performance.
So, if you’d like to be warned of such scenarios, then select to be warned when RAID health is degraded.
But be aware that such checks/resyncs on the RAID setup may be routinely performed by your system, so you might get warned too often in some cases.
RAID health is critical
This is the warning level that you’d want if you wish to be warned only in extreme cases, where the RAID setup is actually failing, or has already failed.
In these cases your RAID setup requires your immediate attention in order to solve the issues that it is presenting, in order to avoid any possible data loss.