E-Series: Temperature exceeding limit leads to - Write-back caching forcibly disabled
Applies to
- NetApp E-Series
- Battery Backup Units (BBU)
Issue
- One time only AutoSupport / email notification is received and no further error occurs
E-Series Notification (Write-back caching forcibly disabled) CRITICAL
- Associated events seen in
Major Event Log:
B:6/3/23, 5:11:51 AM (05:11:51) 39292 212b Write-back caching forcibly disabled - Shelf 99, Bay B - Event: BAD BBU-2,3 <--CRITICAL
B:6/3/23, 5:00:10 AM (05:00:10) 39291 5023 Controller return status/function call for requested operation - Shelf 99, Bay B
---> Sense 6/3f/c6 = Unit Attention - Temperature sensor failed
----> FRU group: Subsystem; Tray ID: 99, Type : Temp Sensor, State: Warning
A:6/3/23, 4:56:45 AM (04:56:45) 39285 281b Nominal temperature exceeded - Shelf 99, Controller 2, Bay inlet <--CRITICAL
A:6/3/23, 4:56:45 AM (04:56:45) 39284 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: Warning
B:6/3/23, 4:56:49 AM (04:56:49) 39290 212c Write-back caching fully restored - Shelf 99, Bay B
B:6/3/23, 4:56:46 AM (04:56:46) 39289 210a Controller cache not enabled or was internally disabled - Shelf 99, Bay B - Event: BAD BBU,Battery Unusable-2
A:6/3/23, 4:56:50 AM (04:56:50) 39288 212c Write-back caching fully restored - Shelf 99, Bay A
A:6/3/23, 4:56:46 AM (04:56:46) 39287 210a Controller cache not enabled or was internally disabled - Shelf 99, Bay A - Event: BAD BBU,Battery Unusable-0
B:6/3/23, 4:56:45 AM (04:56:45) 39286 3101 Asynchronous event notification (AEN) posted for recently logged event - Shelf 99, Bay B