Fujitsu M12-2/M12-2S Servers: Memory Maintenance can Result in Error "Window size is too small (write VrefDQ training)" Error 02001426
(Doc ID 2274237.1)
Last updated on MARCH 25, 2021
Applies to:
Fujitsu SPARC M12-2S - Version All Versions and laterFujitsu SPARC M12-2 - Version All Versions and later
All Platforms
Symptoms
When a system with both memory groups A and B installed on either the CMUU or CMUL, and a memory DIMM is added or replaced, a PPAR poweron might fail with the error:
Window size is too small (write VrefDQ training) Date: Jul 10 10:20:13 HKT 2017 Code: 40002000-004b850134220000ff-020014260000000000000000 Status: Warning Occurred: Jul 10 10:20:13.684 HKT 2017 FRU: /BB#0/CMUL/MEM#03B,/BB#0/CMUL Msg: Window size is too small (read VrefDQ training) Diagnostic Code: 00000b00 00000000 0000 00000001 00000000 0000 00000000 00000000 0000 00000000 00000000 00000000 00000000 00000000 00000000 0000
Changes
The addition or replacement of a memory DIMM.
Cause
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