E-Series E28xx or newer platform locks down with status of "Memory Parity Error" and 7-segment code sequence "OE L2 CF dx"

Applies to

• NetApp E-Series
• Platforms: E2800, E5700, EF280, EF570, E4000, EF600 and EF300

Issue

• AutoSupport case opened with ESDIAG:E-Series Notification from Storage02 (Persistent controller memory parity error) CRITICAL
• The system generates critical events: Write-back caching forcibly disabled
• Controller locks down with 7 segment LED display code OE L2 CF dx (x: location of the cache DIMM).
  • This code translates to persistent processor/cache DIMM ECC errors.
  • For the products without 7 segment LED display, check state-capture-data > cmgrshow in support data.

Example:

    "altCtlSystemInfo": {
        "lockdownInfo": {
            "additionalData": "Failed DIMM in slot 3",
            "ledSequence": "0EL2--CFd3",
            "lockdownCause": 13,
            "lockdownCauseString": "LOCKDOWN_CAUSE_CACHE_MULTI_ECC_ERR",
            "lockdownClearable": true

• SANtricity System Manager or support bundle reports controller in Memory parity error: Status: Memory parity error
• Major event log and exception log if available (excLogShow) indicate the controller encountered correctable memory ECC errors before it failed.

Date/Time: **/**/**, 2:54:53 PM
Sequence number: ****
Event type: 2703
Event category: Internal
Priority: Informational
Event needs attention: false
Event send alert: false
Event visibility: true
Description: Recoverable error in processor memory detected/corrected
Event specific codes: 0/0/0
Component type: Controller
Component location: Shelf **, Bay *
Logged by: Controller in bay *