You may need to reboot the server.
Hello, We have a Dell PowerEdge R520 that was found to have a failed drive. The system is running ESX and hosting multiple VMs, as well as has a RAID 5 that utilizes six 1.2 TB 10k 6GB/s SAS disks, with three virtual disks on it, as well as a RAID 1 that has two  500GB SSD SATA drives on it for a datastore. We ordered an identical drive and swapped out the failed unit for the new one. However, upon replacement, the drive shows up as "Non-RAID" and when attempting to reassign it as the new Global Hot Spare, we are receiving a quite concerning warning message. The message reads as " RAC0516: Converting physical disk drives to RAID-compatible will overwrite any OS-created RAID arrays. Make sure that there are no OS-configured RAID arrays, and then click OK." [IMAGE] We've never encountered this with any other servers, but this is also the only server we have running multiple arrays with multiple virtual disks on them. If we're reading this correctly, are we to understand that we cannot reintroduce this replacement disk back into the RAID disk pool without losing everything on this server? If this isn't the case, can you please explain how this will complete without destroying the current RAIDs and the associated virtual disks that this server is hosting? Thank you in advance for all the help.
Drive replacement showing as Non-RAID on R520 with PERC H310