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3ware® User Guide > Troubleshooting > Error and Notification Messages > Error and Notification Message List

0002 Degraded unit
Event Type
Error
Cause
An error was encountered and the unit is now operating in degraded (non-redundant) mode. This is usually due to a drive failure or the physical removal of a drive from a redundant unit.
Action
Check hardware connections and reseat the drive or drives. Rescan the controller from 3DM or CLI to see if the unit has been restored. If you are able to restore the unit before any data has been written to the unit, a rebuild will not be necessary. If the unit remains degraded, replace the missing or dead drives and initiate a rebuild.
See Also
About Degraded Units
Rebuilding Units

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