Tuesday 25 October 2016

Controller replacement activity on HP EVA 4400 storage



PLATFORM

SAN – Storage – HP- EVA4400 – Command View


PROBLEM STATEMENT

Getting Attention error on disk enclosure and also Amber LED on Controller Enclosure - Controller failure - Controller replacement activity on HP EVA 4400 storage



SUMMARY


Problem Reported: - 

Getting Attention error on disk enclosure and also Amber LED on Controller Enclosure


Logs observation & Analysis: -


Baselevel:             SR1142 HSV200
Brief Description:     0944ba0e; An HSV200 controller has left the Storage System.
Brief Description:     09cdc305; A Fibre Channel port has transitioned to the FAILED state.
Reason:              State: Normal --> Failed; DIMM size: 1024 MB;


Step-by-Step Procedure :-

1. Collect the sssu configuration output

2. Halt I/O to the controller with HP Command View EVA - In the Halt Controller section of the Shut down Controller window, click Halt. This halts controller processing while the power remains on.

3. Power of the controller

4. Disconnect the Fibre Channel cables from the halted controller. Ensure they are marked to facilitate reconnecting later.

5. Swap the Flash card, Cache battery & blower from old controller to new controller

6. Insert the new controller and reconnect all the cables

7. Power on the controller & enter the WWN no of the storage to new controller and initialize from OCP panel

8 Discover the storage from command view EVA

9. Check the operation status of all the components and health checkup of the newly replaced controller

Bug Error :-

After replacing the controller below bug error was reported on the command view

Operational State


Storage System   : Attention
Controller 1     : Good
Controller 2     : Soft Diagnostic Failure
Managment Module : Good


Problem cause :

The message appears when the controller detected something wrong during its last reboot.  Would need to check the controller event log, to see what happened just before or during the last reboot.

The message to look for is "this controller needs attention", and the ones just before it.

Solution  : 

The Controllers are rebooted in sequence manner to clear the error.



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