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Cisco Bug: CSCun82594 - DIMMs fail MBIST with Lockstep or Mirroring Enabled

Last Modified

Sep 08, 2014

Products (1)

  • Cisco Unified Computing System

Known Affected Releases

2.2(1.180)B 2.2(1.186)B 2.2(1.210)B 2.2(1.219)B 2.2(1.228)B

Description (partial)

Symptom:DIMMS are mapped out during MRC (BIOS POST) when Lockstep or Mirroring are enabled.

Conditions:1. Ivy Bridge or Sandy Bridge CPU
2. Following DIMM Configurations:
 
1866 Hynix       - Lockstep/Mirroring - 3 DIMMs Per Channel 
1866 Samsung  - Lockstep/Mirroring - 3 DIMMs Per Channel
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