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Memory options, Advanced ecc memory, Dimm installation guidelines – HP ProLiant BL465c G6 Server-Blade User Manual

Page 27

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Hardware options installation 27

Memory options

You can expand server memory by installing PC2-5300 Registered DDR2 SDRAM DIMMs. The server
supports up to 32 GB of memory using eight 4-GB DIMMs (four DIMMs per processor).

NOTE:

The Advanced Memory Protection option in RBSU provides additional memory

protection beyond Advanced ECC. By default, the server is set to Advanced ECC Support. For
more information, refer to "HP ROM-Based Setup Utility (on page

43

)."

For DIMM slot locations and bank assignments, see "DIMM slots (on page

10

)."

Advanced ECC memory

Advanced ECC memory is the default memory protection mode for this server blade. In Advanced ECC,

the server blade is protected against correctable memory errors. The server blade provides notification if

the level of correctable errors exceeds a pre-defined threshold rate. The server blade does not fail
because of correctable memory errors. Advanced ECC provides additional protection over Standard ECC

because it is possible to correct certain memory errors that would otherwise be uncorrectable and result in

a server blade failure.
Whereas standard ECC can correct single-bit memory errors, Advanced ECC can correct single-bit
memory errors and multi-bit memory errors if all failed bits are on the same DRAM device on the DIMM.

DIMM installation guidelines

Observe the following guidelines when installing additional memory:

Install only ECC PC2-5300 Registered DDR2 SDRAM DIMMs that meet the following specifications:

o

Supply voltage: 1.8 V

o

Bus width: 72 bits

Observe the following special conditions when installing memory with a second processor:

o

Processor 2 can be installed without memory.

o

Any memory installed into banks for processor 2 can be used only if processor 2 is installed.

DIMMs must always be installed in pairs.

HP recommends installing DIMMs with the greatest capacity in the banks farthest from each

populated processor first.

DIMMs installed in the same memory bank must have the same part number.

DIMMs installed in different banks can be of different sizes.

CAUTION:

Always wear an antistatic wrist strap when working inside the server.

The server blade supports multiple memory modes, based on DIMM population. Use RBSU ("

HP ROM-

Based Setup Utility

" on page

43

) to select a mode (System will default to Advanced ECC).