Replacing a Faulty Drive

Replacing a Faulty Drive

To avoid the loss of critical data, it is important that you replace and rebuild a defunct (DDD) drive promptly.

The results of hard disk drive failures depend on the configuration of the disk arrays and the number of drives that fail. Before you remove or replace a DDD drive, review the following examples.

To replace a faulty drive:

  1.  Before you remove or replace a drive that you  suspect to be defective, verify that the drive is  defective. To do this:

    1.  Check the drive for damage.
    2.  Verify that the drive is positioned correctly. If the  drive is not installed correctly, reposition the  drive.
    3.  Check the lights on the drive tray. (See the  following information for a description of the  lights.) Verify that you can remove the drive  safely.

       The lights on the hot-swap drive tray provide  drive status information, as follows:

      •  Hard Disk Activity Light: When this green  light is flashing, it indicates that the server  is accessing the drive.
      •  Hard Disk Status Light: When this amber  light is lit continuously, it indicates that the  drive has failed. When the light flashes  slowly (one flash per second), it indicates  that the hard disk drive is part of a disk  array and is being rebuilt. When the light  flashes rapidly (three flashes per second), it  indicates that the controller is identifying the  drive. The drive should not be replaced if  this light is blinking, the drive has just been  replaced and the disk array is being rebuilt.

  2.  Physically replace the defective drive or use an  existing RDY drive that has a capacity equal to or  greater than the drive that you are replacing as a  hot-spare replacement drive.

       Removing the wrong hard disk drive might cause  loss of all data in the array.

    1.  To physically replace the defective hard disk  drive, follow the instructions in 'Internal Drive Installation'  and 'Installing a Drive in a Hot-Swap Bay', then, follow  the instructions in 'Understanding the Drive Rebuild Process'.
    2.  To rebuild the defunct drive to an existing RDY  drive, follow the instructions in 'Understanding the Drive Rebuild Process'.

Note: You can use the Administration and Monitoring utility program to identify a defunct drive and designate a replacement drive without restarting the server. Review the information in 'Understanding the Drive Rebuild Process', then, see 'Using the Administration and Monitoring Utility Program' for more information.

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