dell r720 not found raid

There are a few potential reasons why your Dell R720 may not be finding the RAID:

1. Incorrect RAID configuration: Make sure that the RAID configuration is set up correctly in the BIOS or RAID controller. Double-check that all drives are connected and recognized.

2. Failed hard drive: If one or more of the hard drives in the RAID has failed, this can cause the RAID to not be found. Check the status of the hard drives and replace any that have failed.

3. Faulty RAID controller: If the RAID controller itself is faulty, this can prevent the RAID from being found. Try resetting or replacing the RAID controller.

4. Outdated firmware or drivers: Make sure that the firmware and drivers for both the RAID controller and the server itself are up to date.

If you are still having issues with your RAID after trying these steps, it may be best to contact Dell support for further assistance.