Servicing Dimms (Cru) - Oracle X7-8 Service Manual

Install a Processor

Servicing DIMMs (CRU)

This section describes how to service memory modules (DIMMs). The Oracle Server X7-8
supports 64-GB quad-rank (QR) Load-Reduced DIMMs (LRDIMMs) and 32-GB dual-rank
(DR) and 16-GB DR Registered DIMMs (RDIMMs). The following topics and procedures
provide information to assist you when replacing a DIMM or upgrading DIMMs:
"DIMM Physical Layout" on page 182
■
"DIMM Population Rules" on page 184
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"DIMM Population Scenarios" on page 187
■
"DIMM Operating Speeds" on page 188
■
"DIMM Rank Classification Labels" on page 188
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"Inconsistencies Between DIMM Fault Indicators and the BIOS Isolation of Faulty
■
DIMMs" on page 189
"Identify and Remove a Faulty DIMM" on page 189
■
"Install a DIMM" on page 192
■
DIMMs are customer-replaceable units (CRUs). For more information about
CRUs, see
Units" on page
Components" on page
Caution -
personnel.
Caution -
electrostatic discharge. This sensitivity can cause the components to fail. To avoid damage,
ensure that you follow antistatic practices as described in
Prevention Measures" on page
DIMM Physical Layout
The physical layout of the CMOD memory DIMMs and DIMM installation order is shown in
the following figure.
182 Oracle Server X7-8 Service Manual • April 2018
"Illustrated Parts Breakdown" on page 22
24. For component serviceability, locations, and designations, see
22.
DIMMs should be removed and replaced only by authorized Oracle Service
These procedures require that you handle components that are sensitive to
97.
and "Customer-Replaceable
"Electrostatic Discharge and Static
"Replaceable