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Both Controllers Down After Chassis Replacement on Lenovo E-Series Storage

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Applies to

  • Lenovo E-Series Storage Systems (OEM)

Issue

After a chassis replacement, both controllers in the Lenovo E-Series storage system became non-operational, resulting in a full system outage and data inaccessibility. The following symptoms and log outputs were observed:

  • Controller A: Locked in a board mismatch lockdown state, 7-segment code OEL0, indicating VPD/EEPROM corruption and inability to verify hardware.
  • Controller B: Unresponsive, 7-segment code E8, indicating ECC error on DIMM slot 3.
  • Serial logs showed repeated failures to establish inter-controller communication, persistent hardware lockdowns, and SAS expander/drive errors.
  • Example log output:

3/16/26-09:36:30 (tRAID): WARN:  UWManager::initializeNvsramIWLog: foreign controller
03/16/26-09:36:30 (tRAID): WARN:  UWManager::initializeNvsramIWLog: IWLog invalidated
03/16/26-09:36:30 (tRAID): NOTE:  UWMgr findIWLogs: Found IW log drive. Devnum 0x010000 tray=99 slot=1 ssd=1 qos=0 controller=local
03/16/26-09:36:30 (tRAID): NOTE:  UWMgr findIWLogs: Found IW log drive. Devnum 0x010001 tray=99 slot=2 ssd=1 qos=0 controller=local
03/16/26-09:36:32 (tRAID): ERROR: UWMgr: No DSM Region found for Drive 0x010009
03/16/26-09:36:32 (tRAID): ERROR: UWMgr: No DSM Region found for Drive 0x01000e

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