IBIST Memory Failures on T5xx0 Servers (Doc ID 1573160.1)

Last updated on JULY 20, 2016

Applies to:

Sun SPARC Enterprise T5240 Server - Version All Versions and later
Sun Netra T5220 Server - Version All Versions and later
Sun SPARC Enterprise T5220 Server - Version All Versions and later
Sun SPARC Enterprise T5440 Server - Version All Versions and later
Sun Blade T6320 Server Module - Version All Versions and later
Information in this document applies to any platform.

Symptoms

 The system is down and getting "Forced fail (POST)" errors for memory, MCU or L2 cache

  /SYS/MB SP detected fault: /SYS/MB/CMP0/L2_BANK7 Forced fail (POST)
   /SYS/MB SP detected fault: /SYS/MB/CMP0/BR0/CH1/D1 Forced Fail (IBIST)

or

   Fault | critical: SP detected fault at time Thu Oct  8 07:59:25 /SYS/MB/CMP0/MCU2 Forced fail (IBIST) 
   Chassis | major: Oct  8 07:59:27 ERROR: MB/CMP0/MCU3 unused because MB/CMP0/MCU2 is not configured
   Chassis | major: Oct  8 07:59:27 ERROR: MB/CMP0/L2_BANK4, MB/CMP0/L2_BANK5 unused because MB/CMP0/MCU2 is not configured 
 

Cause

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