Advanced ecc memory configuration, Dimm installation guidelines, Dimm population order – HP ProLiant BL465c G7 Server-Blade User Manual
Page 23
Hardware options installation 23
Item Description
Definition
4
Voltage rating
L = Low voltage (1.35v)
Blank or omitted = Standard
5
Memory speed
10600 = 1333-MHz
8500 = 1066-MHz
6
DIMM type
R = RDIMM (registered)
E = UDIMM (unbuffered with ECC)
For the latest supported memory information, see the QuickSpecs on the HP website
Advanced ECC memory configuration
Advanced ECC memory is the default memory protection mode for this server blade. Standard ECC can
correct single-bit memory errors and detect multi-bit memory errors. When multi-bit errors are detected
using Standard ECC, the error is signaled to the server blade and causes the server blade to halt.
Advanced ECC protects the server blade against some multi-bit memory errors. Advanced ECC can
correct both single-bit memory errors and 4-bit memory errors if all failed bits are on the same DRAM
device on the DIMM.
Advanced ECC provides additional protection over Standard ECC because it is possible to correct certain
memory errors that would otherwise be uncorrected and result in a server blade failure. The server blade
provides notification that correctable error events have exceeded a pre-defined threshold rate.
To correct entire DRAM device failures when using x8 DIMMs, DIMM slots on channels 1 and 2 and
channels 3 and 4 must be populated using x8 DIMMs. For specific population advice, see "DIMM
installation guidelines (on page
)."
DIMM installation guidelines
The default AMP mode for this server blade is Advanced ECC. Depending on the DIMM population,
additional AMP modes can be configured. Observe the following guidelines to install additional memory,
and then use RBSU ("
" on page
) to enable other modes:
•
Install only DDR3-1066 or DDR3-1333 DIMMs.
•
DIMMs must be installed for processor 1.
•
Populate DIMM slots for a processor only if the processor is installed.
•
To maximize performance, populate each memory channel on a processor as nearly identically to
the remaining channels on that processor as possible.
•
To maximize performance in multi-processor configurations, distribute the total memory installed
between all processors as evenly as possible.
•
To maximize Advanced ECC error correction capability, populate memory channels 1 and 2 and
memory channels 3 and 4 with DIMMs having the same data width.
DIMM population order