X3850 X5 Memory Reliability Accessibility And Serviceability (Ras) Features - IBM X3950 X5 Problem Determination And Service Manual

x3850 X5 Memory Reliability Accessibility and Serviceability (RAS)
Features
This topic provides information on the x3850 X5 Memory Reliability, Accessibility,
and Serviceability (RAS) features.
The following information is a summary of the x3850 X5 Memory Reliability,
Accessibility, and Serviceability (RAS) features.
10
IBM System x3850 X5 and x3950 X5 Types 7145, 7146, 7143, and 7191: Problem Determination and Service Guide
Noise levels (the declared A-weighed sound power level of the server)
See Acoustical noise emissions.
Test voltage and frequency:
230V / 50 Hz or 60 Hz
Total harmonic distortion of the electricity supply system:
The maximum harmonic content of the input voltage waveform
will be equal or less than 2%. The qualification is compliant with
EN 61000-3-2.
Information and documentation on the instrumentation setup and
circuits used for electrical testing:
ENERGY STAR Test Method for servers; ECOVA Generalized Test
Protocol for Calculating the Energy Efficiency of Internal Ac-Dc
and Dc-Dc Power Supplies.
Measurement methodology used to determine information in this
document:
ENERGY STAR Servers Version 2.0 Program Requirements; ECOVA
Generalized Test Protocol for Calculating the Energy Efficiency of
Internal Ac-Dc and Dc-Dc Power Supplies.
Table 3. x3850 X5 Memory RAS Features
Nodes Hemisphere
Mode
(DIMM
configuration
match
between
both CPU
memory
controllers)
(Note 1)
1 node Auto enabled
when
conditions
met on all
installed
CPUs.
1 node and Auto enabled
MAX5 when
conditions
met on all
installed
CPUs; always
enabled on
MAX5
Memory DIMM
Mirroring Sparing (2
(Note 2) DIMMs
spare per
memory
card) (Note
3)
CPU Enabled by
Intrasocket UEFI setting
enabled by when
UEFI setting. conditions
met.
CPU Enabled by
Intrasocket UEFI setting
and MAX5 when
mirroring conditions
enabled by met.
UEFI setting Unsupported
in MAX5
memory
DDDC RBS Sparing
Sparing (1 x4 (1 x4 DRAM
DRAM spare spare per
per DIMM DIMM pair)
pair) (Note 4) (Note 5)
Auto enabled Not
for x4 supported
memory
controlled by
Westmere-EX
CPUs.
Auto enabled Auto enabled
for x4 in MAX5
memory with x4
controlled by DIMMs
Westmere-EX
CPUs