System Disk Mirroring

Notes

• Disk mirroring entails 2 separate systems working within the server
  • In disk mirroring a complete duplicate of the drives is created.
  • Four or more drives work as two separate systems.
  • If a single drive fails disk mirroring is suspended but the system continues to work normally
• Raid requires disk striping
  • Raid requires 5 or more disks and the data is striped between each drive. Each drive then contains the information of 2/5 of the system data.
  • If a single drive fails RAID fails but the system continues to work

Disk Mirroring Failure Message

Shift-systems attention option 6

• Shift+Systems Attention
  
• Option 6 shows error message(s)
  
• F1 over message shows status
  

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Last modified: November 7, 2011

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