Component Fault Tolerances - Oracle SPARC M8 Service Manual

Identify Disabled Components
Component
SPs
SPDB (SPARC M8-8 and SPARC M7-8)
SPDB (SPARC M7-16)
SPMs (CMIOU chassis)
SPMs (switch chassis, SPARC M7-16)
SPPs (SPARC M7-16)
Switch units
Related Information
"Component Service Task Reference" on page 32
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"Component-Specific LEDs" on page 45
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Component Fault Tolerances

This topic describes the level of fault tolerance for specific components and provides guidelines
for replacing these components when a fault occurs.
CMIOUs. Remove a faulty CMIOU only when a replacement CMIOU is available. Install
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the new CMIOU as quickly as possible, within 10 minutes, if possible. You must prepare a
CMIOU before removing it from the server.
DIMMs. If a DIMM is diagnosed to be faulty while the system is running, the memory will
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dynamically switch from 16-way to 15-way interleave by distributing the contents of the
faulty DIMM into the other 15 DIMMs. For more information, refer to
SPARC M8 and SPARC M7 Servers Administration
42 SPARC M8 and SPARC M7 Servers Service Manual • September 2017
Oracle ILOM Target Name Reported
/SYS/SPx
x is 0 or 1
/SYS/SPDB
/SYS/SPDBx
x is 0–2
/SYS/SPx/SPMy
SPARC M8-8 and SPARC M7-8 (two PDomains): x is 0, 1 and y is 0, 1
SPARC M8-8 and SPARC M7-8 (one PDomain): x is 0, 1 and y is 0
/SYS/SPPx/SPMy
SPARC M7-16: x is 0–3, y is 0–1
/SYS/SPx/SPMy
x is 0–1, y is 0
/SYS/SPPx
/SYS/SWUx
x is 0–5
"DIMM Sparing" in
Guide.