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E-Series write-back cache disabled after controller PSU lost input power on EF300 and EF600

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e-series-systems
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hw
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Applies to

  •  EF300
  •  EF600
  •  SANtricity OS 11.70.x

Issue

  • SANtricity reports critical event `Write-back caching forcibly disabled`
  • RecoveryGURU reports:
    • SUPPORT_CRU_NOINPUT-Recovery Failure
    • FAILED_FAN-Recovery Failure
    • MAX_TEMP_EXCEEDED-Recovery Failure
    • WB_CACHING_FORCIBLY_DISABLED-Recovery Failure
  • Disk shelf reports critical temperature condition at storage-array-profile:

 Shelf Temperature
         Temperature sensor status:  Maximum temperature exceeded  
         Location:                   Shelf    

  • Disk shelf reports one PSU was No power input:

Power Supplies Detected:  2

        Power supply status:  Optimal          
        Location:             Controller A     
        Part number:          PS-2162-8F+01    
        Serial number:        6L8FXxxxxxxxxQW  
        Date of manufacture:  Not Available    

        Power supply status:  No power input   
        Location:             Controller B     
        Part number:          PS-2162-8F+01    
        Serial number:        6L8FXxxxxxxxxGZ  
        Date of manufacture:  Not Available   

  • Event log messages include one or more of the following:

B:8/7/26, 10:30:28 PM (22:30:28) 21807 212b Write-back caching forcibly disabled - Shelf 99, Bay B - Event: BAD BBU-0,1,2,3,4,5,6 <--CRITICAL
B:8/7/26, 10:15:23 PM (22:15:23) 21806 210a Controller cache not enabled or was internally disabled - Shelf 99, Bay B - Event: BAD BBU,Battery Unusable-0
B:8/7/26, 10:15:22 PM (22:15:22) 21805 3101 Asynchronous event notification (AEN) posted for recently logged event - Shelf 99, Bay B
----> Sense 6/3f/c6 = Unit Attention - Temperature sensor failed
----> FRU group: Subsystem; Tray ID: 99, Type : Temp Sensor, State: Failed
A:8/7/26, 10:15:23 PM (22:15:23) 21804 281c Maximum temperature exceeded - Shelf 99 <--CRITICAL
A:8/7/26, 10:15:23 PM (22:15:23) 21803 3101 Asynchronous event notification (AEN) posted for recently logged event - Shelf 99, Bay A
----> Sense 6/3f/c6 = Unit Attention - Temperature sensor failed
----> FRU group: Subsystem; Tray ID: 99, Type : Temp Sensor, State: Failed
A:8/7/26, 10:15:22 PM (22:15:22) 21802 210a Controller cache not enabled or was internally disabled - Shelf 99, Bay A - Event: BAD BBU,Battery Unusable-0
B:8/7/26, 10:14:32 PM (22:14:32) 21801 3101 Asynchronous event notification (AEN) posted for recently logged event - Shelf 99, Bay B
----> Sense 6/3f/c7 = Unit Attention - Non-media Component Failure
----> FRU group: Subsystem; Tray ID: 99, Type : Cooling Element, State: Failed
B:8/7/26, 10:14:12 PM (22:14:12) 21800 3101 Asynchronous event notification (AEN) posted for recently logged event - Shelf 99, Bay B
----> Sense 6/3f/c7 = Unit Attention - Non-media Component Failure
----> FRU group: Subsystem; Tray ID: 99, Type : Power Supply, State: Failed
A:8/7/26, 10:14:33 PM (22:14:33) 21799 280b Controller shelf component failed - Shelf 99, Controller 2, Fan canister 6, Bay 1 <--CRITICAL
A:8/7/26, 10:14:33 PM (22:14:33) 21798 3101 Asynchronous event notification (AEN) posted for recently logged event - Shelf 99, Bay A
----> Sense 6/3f/c7 = Unit Attention - Non-media Component Failure
----> FRU group: Subsystem; Tray ID: 99, Type : Cooling Element, State: Failed
A:8/7/26, 10:14:03 PM (22:14:03) 21797 283b Power supply failed - Shelf 99, Controller 2, Fan canister 6, Bay 1 <--CRITICAL
A:8/7/26, 10:14:03 PM (22:14:03) 21796 3101 Asynchronous event notification (AEN) posted for recently logged event - Shelf 99, Bay A
----> Sense 6/3f/c7 = Unit Attention - Non-media Component Failure
----> FRU group: Subsystem; Tray ID: 99, Type : Power Supply, State: Failed

  • Write-back caching and the temperature sensor returned to normal after power was restored.

B:8/8/26, 12:25:32 PM (12:25:32) 21819 212c Write-back caching fully restored - Shelf 99, Bay B
B:8/8/26, 12:25:31 PM (12:25:31) 21818 281a Temperature changed to optimal - Shelf 99
B:8/8/26, 12:24:51 PM (12:24:51) 21817 2809 Controller shelf component changed to optimal - Shelf 99, Controller 2, Fan canister 6, Bay 1
B:8/8/26, 12:24:51 PM (12:24:51) 21816 2809 Controller shelf component changed to optimal - Shelf 99, Controller 2, Fan canister 6, Bay 1
B:8/8/26, 12:24:51 PM (12:24:51) 21815 2809 Controller shelf component changed to optimal - Shelf 99, Controller 2, Bay 2
A:8/8/26, 12:25:22 PM (12:25:22) 21814 212c Write-back caching fully restored - Shelf 99, Bay A
A:8/8/26, 12:25:21 PM (12:25:21) 21813 281a Temperature changed to optimal - Shelf 99
A:8/8/26, 12:24:50 PM (12:24:50) 21812 2809 Controller shelf component changed to optimal - Shelf 99, Controller 2, Fan canister 6, Bay 1
A:8/8/26, 12:24:50 PM (12:24:50) 21811 2809 Controller shelf component changed to optimal - Shelf 99, Controller 2, Fan canister 6, Bay 1
A:8/8/26, 12:24:50 PM (12:24:50) 21810 2809 Controller shelf component changed to optimal - Shelf 99, Controller 2, Bay 2

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