Dell PowerVault MD3420 - Manual (Page 37)

Troubleshooting Expansion Enclosure Management
Modules
CAUTION: Many repairs may only be done by a certified service technician. You should only
perform troubleshooting and simple repairs as authorized in your product documentation, or as
directed by the online or telephone service and support team. Damage due to servicing that is
not authorized by Dell is not covered by your warranty. Read and follow the safety instructions
that came with the product.
CAUTION: It is recommended that you turn off the host server before turning off the expansion
enclosure array to prevent loss of data.
If EMM Status LED is Blinking Amber (5 Times per Sequence)
Update the firmware to the latest supported firmware on both the EMMs. For more information on
updating your EMM firmware, see Management Firmware Downloads in the Storage Arrays
Administrator's Guide at dell.com/powervaultmanuals.
If the EMM Status LED is Solid or Blinking Amber (2 or 4 Times per Sequence)
1. Turn off the host server.
2. Remove the EMM and verify that the pins on the backplane and EMM are not bent.
3. Reseat the EMM module and wait for 30 seconds.
4. Turn on the host server.
5. Check the EMM status LED.
6. If the LED does not turn Green, replace the EMM.
If the problem is not resolved, see Getting Help .
If the Link Status LEDs are not Green
1. Turn off the host server.
2. Reseat the cables on the expansion array and the server.
3. Turn on the expansion arrays and the storage array and wait until the system is fully booted.
4. Turn on the host server.
5. Check the link status LED. If the link status LED is not green, replace the cables.
If the problem is not resolved, see Getting Help .
Troubleshooting RAID Controller Modules
CAUTION: Many repairs may only be done by a certified service technician. You should only
perform troubleshooting and simple repairs as authorized in your product documentation, or as
directed by the online or telephone service and support team. Damage due to servicing that is
not authorized by Dell is not covered by your warranty. Read and follow the safety instructions
that came with the product.
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