I recently setup a PowerEdge R720xd as a backup server (Windows Server 2016). I am using a PERC H710 Mini to control my raid configuration. I have had 2 drives have "Failure Predicted", one of them was a 232gb OS drive that is in a Raid-1 configuration. The other is a 4TB drive in my Raid-6 configuration. I decided I would just buy two 4TB drives and expand my Raid-6 and just replace the OS drive (232gb).

I have found that I cannot "Reconfigure.." my Raid-6 configuration but I can "Reconfigure.." my Raid-1. After doing some reading online, it turns out I cannot "Reconfigure.." if I have more than one virtual disk? (Per this: https://www.dell.com/community/PowerEdge-HDD-SCSI-RAID/Reconfigure-option-not-there-for-virtual-disks/td-p/4246113) 

I could be wrong about this but that is what I am seeing.

1. Is this information correct? Can I not expand my Raid-6 in my current configuration? ("sliced" arrays)

2. If that information is correct, could I break my mirror, remove one of my drives. Then delete the VD and use the removed drive to boot the server after? Allowing me to then expand my Raid-6?

 

Thank you for helping me understand this issue!!

-Michael