Dell PowerEdge User Manual

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Dell PowerEdge User Manual Manual pdf 47 page image

The following message is displayed after the warning is displayed: --- Press Enter to continue, or Ctrl+R to enter setup ---.Press Enter to allow the operating system to continue with the boot sequence, or press Ctrl+R to enter into the BIOS Configuration UtilityCtrl+R to investigate the cause of the Degraded virtual disk.To investigate the cause, check for the following:• Whether a physical disk in the virtual disk has failed or has gone offline. Check the status at the Physical Disks field. A Degraded statusdepends on the RAID level of the virtual disk and the number of physical disks that have failed:–For a virtual disk at RAID 1 or RAID 5, a single physical disk failure causes a Degraded status.–For a virtual disk at RAID 10, the failure of a physical disk in each of the mirror sets creates a Degraded status for the RAID 10. Thefailure of two physical disks in the same mirror set creates a Failed status for the RAID 10.• Whether the controller has failed due to a firmware failure or a component failure. A failed controller causes a virtual disk not to boot.For the virtual disk to recover from Degraded status, the failed physical disk must be replaced and the virtual disk must be rebuilt usingOpenManage Server Administrator Storage Management. When the rebuild operation is completed, the virtual disk status changes fromDegraded to Ready. For a description of the rebuild function, see Storage Management at dell.com/support/manuals.WARNING - Found virtual disks that are failedThis warning message is displayed when at least one virtual disk is in a Failed state and Pause if Failed is set to ON at the BIOSConfiguration Utility ().The following message is displayed after the warning is displayed: --- Press to continue, or to enter setup --- .Press to allow the operating system to continue its boot, or press to enter into the BIOS Configuration Utility() to investigate the cause of the Failed virtual disk.NOTE: A boot virtual disk that is in a Failed state prevents the operating system from booting.To investigate the cause, check for the following:• Determine if a single or multiple physical disks in a non-redundant virtual disk have failed. If yes, data is lost. Recover the lost data froma backup storage source.• Determine if two or more physical disks in a redundant virtual disk have failed. If yes, data is lost. Recover the lost data from a backupstorage source.NOTE: For a RAID 10 configuration, if a single physical disk fails in each mirrored set, the redundant virtual disk goes to aDegraded status but data is not lost. If two physical disks fail in one of the mirrored sets, the redundant virtual disk goes to aFailed status and data is lost.WARNING - Found virtual disks that are degraded and failedThis warning message is displayed when multiple virtual disks are in Degraded and Failed state and Pause if Degraded or Pause if Failedare set to ON at the BIOS Configuration Utility Ctrl+R.The following message is displayed after the warning is displayed: --- Press Enter to continue, or Ctrl+R to enter setup --- .Press to allow the operating system to continue its boot, or press Ctrl+R to enter into the BIOS Configuration Utility Ctrl+R toinvestigate the cause of the Degraded and Failed virtual disks.Troubleshooting your system 47