HP Z840 Maintenance and Service Guide - Page 75

Memory, Supported DIMM configurations, BIOS errors and warnings, DIMM installation guidelines

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Memory Supported DIMM configurations NOTE: Mirroring and DIMM sparing are not supported. Platform HP Z440 HP Z640 HP Z840 Configuration ● Eight DIMM slots ● Registered ECC DIMMS only ● Maximum capacity: 128 GB ● Four DIMM slots (single processor) or eight DIMM slots (dual processor) ● Registered ECC DIMMS and ECC Load Reducing DIMMs ● Maximum capacity: - RDIMMs: 64 GB for single processor and 128 GB for dual processor - LRDIMMs: 128 GB for single processor and 256 GB for dual processor. ● The workstation can be configured for NUMA ● 16 DIMM slots (8 per processor) ● ECC Registered DIMMs and ECC Load Reducing DIMMs ● Maximum capacity: - RDIMMs: 128 GB for single processor and 256 GB for dual processor - LRDIMMs: 1024 GB for single processor and and 2048 GB for dual processor ● The workstation can be configured for NUMA BIOS errors and warnings The BIOS generates warnings/errors on invalid memory configurations: ● If the BIOS can find a valid memory configuration by disabling plugged-in memory, it does so and reports a warning during POST. the workstation can still be started. The warning will indicate the location of the failed DIMM on the system board. ● If there is no way for the BIOS to obtain a valid memory configuration by disabling plugged-in memory, the BIOS halts with a diagnostics 2006 code for memory error (five beeps and blinks). DIMM installation guidelines ● Install only HP-approved DDR4 DIMMs CAUTION: HP ships only DIMMs that are electrically and thermally compatible with this workstation. Because third-party DIMMs might not be electrically or thermally compatible, they are not supported by HP. ● Install only HP-approved DDR4 DIMMs. See http://www.hp.com/go/quickspecs to find DIMMs that are compatible with the workstation. ● UDIMM (Unbuffered), RDIMM (Registered) and LR DIMM (Load Reduction) memory cannot be mixed. All memory installed in the system must be either UDIMM or RDIMM or LR DIMMs.Supported DIMM configurations on page 65specifies which technologies are supported on each platform. Component replacement guidelines 65

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Memory
Supported DIMM
configurations
NOTE:
Mirroring and DIMM sparing are not supported.
Platform
Configuration
HP Z440
●
Eight DIMM slots
●
Registered ECC DIMMS only
●
Maximum capacity: 128 GB
HP Z640
●
Four DIMM slots (single processor) or eight DIMM slots (dual processor)
●
Registered ECC DIMMS and ECC Load Reducing DIMMs
●
Maximum capacity:
—
RDIMMs: 64 GB for single processor and 128 GB for dual processor
—
LRDIMMs: 128 GB for single processor and 256 GB for dual processor.
●
The workstation can be
configured
for NUMA
HP Z840
●
16 DIMM slots (8 per processor)
●
ECC Registered DIMMs and ECC Load Reducing DIMMs
●
Maximum capacity:
—
RDIMMs: 128 GB for single processor and 256 GB for dual processor
—
LRDIMMs: 1024 GB for single processor and and 2048 GB for dual processor
●
The workstation can be
configured
for NUMA
BIOS errors and warnings
The BIOS generates warnings/errors on invalid memory
configurations:
●
If the BIOS can
find
a valid memory
configuration
by disabling plugged-in memory, it does so and
reports a warning during POST. the workstation can still be started. The warning will indicate the
location of the failed DIMM on the system board.
●
If there is no way for the BIOS to obtain a valid memory
configuration
by disabling plugged-in memory,
the BIOS halts with a diagnostics 2006 code for memory error
(five
beeps and blinks).
DIMM installation guidelines
●
Install only HP-approved DDR4 DIMMs
CAUTION:
HP ships only DIMMs that are electrically and thermally compatible with this workstation.
Because third-party DIMMs might not be electrically or thermally compatible, they are not supported by
HP.
●
Install only HP-approved DDR4 DIMMs. See
go/quickspecs
to
find
DIMMs that are
compatible with the workstation.
●
UDIMM
(Unbuffered),
RDIMM (Registered) and LR DIMM (Load Reduction) memory cannot be mixed. All
memory installed in the system must be either UDIMM or RDIMM or LR DIMMs.
Supported DIMM
configurations
on page
65
specifies
which technologies are supported on each platform.
Component replacement guidelines
65