Steps to unfail a disk in maintenance mode.

The “disk unfail” command in maintenance mode is different from normal mode. The normal mode “disk unfail” clears the disk’s failure bytes and Failed Disk Registry (FDR) entry while in maintenance mode, only the failure bytes is cleared. The disk’s FDR entry should be also be removed.

NOTE: If a disk has failed due to normal wear and tear (not admin failed), the disk should be replaced (RMA).

Procedure on unfailing a disk in maintenance mode:

1.  Run “disk unfail” command to clear the failure bytes. 
   
   
   
2.  Remove the disk from the Failed DiskRegistry (FDR).
• Run "raid_config info showfdr" to view the Failed disk registry.
• Run “raid_config info deletefdr” to remove it from the failed entry.