Configuring and using DDR3 memory with HP ProLiant Gen8 Servers

6
HP SmartMemory
ProLiant Gen8 servers introduce HP SmartMemory technology for DDR3 memory. HP SmartMemory enables
authentication of installed memory. This verifies whether DIMMs have passed our qualification and testing processes
and determines if the memory has been optimized to run on HP ProLiant Gen8 servers. Use of HP SmartMemory DIMMs
enables extended performance and manageability features for the 2P ProLiant Gen8 servers. HP SmartMemory supports
extended performance compared to third party memory for several DIMM types and configurations. Table 3 summarizes
these performance extensions.
Table 3. Extended performance for HP SmartMemory DDR3 DIMMs in 2P ProLiant Gen8 servers
DIMM Type 1 or 2 DIMMs per channel 3 DIMMs per channel
1600 MT/s
RDIMMs
1600 @ 1.5V (SmartMemory)
1600 @ 1.5V (3
rd
Party)
1333 @ 1.5V (SmartMemory)
1066 @ 1.5V (3
rd
Party)
1333 MT/s
RDIMMs
1333 @ 1.35V (SmartMemory)
1333 @ 1.5V (3
rd
Party)
1066 @ 1.35V (SmartMemory)
1066 @ 1.5V (3
rd
Party)
1333 MT/s
LRDIMMs
1333 @ 1.35V (SmartMemory)
1333 @ 1.5V (3
rd
Party)
1066 @ 1.35V (SmartMemory)
1066 @ 1.5V (3
rd
Party)
1333 MT/s
UDIMMs
1333 MT/s (SmartMemory)
1066 MT/s (3
rd
Party)
Not Supported
HP Advanced Memory Error Detection
Over the past five years, the average size of server memory configurations has increased by more than 500%. With
these increased memory capacities, increases in memory errors are unavoidable. Fortunately, most memory errors are
both transient and correctable. Current memory subsystems can correct up to a 4 bit memory error in the 64 bits of data
that are transferred in each memory cycle.
HP Advanced Memory Error Detection technology introduces refinements to error detection technology. Instead of
simply counting each correctable memory error, this new technology analyzes all correctable errors to determine which
ones have a higher probability of leading to uncorrectable errors in the future. Using this advanced approach, HP
Advanced Memory Error Detection is able to better monitor the memory subsystem and increase the effectiveness of the
Pre-Failure Alert notification.
All ProLiant Gen8 servers feature HP Advanced Memory Error Detection. For more information on this technology, see
the HP Advanced Memory Error Detection Technology technology brief at
ProLiant Gen8 memory architecture for servers with Intel®
Xeon® E5-2600 series processors
http://h20000.www2.hp.com/bc/docs/support/SupportManual/c02878598/c02878598.pdf
Overview
The DDR3 memory architecture for ProLiant Gen8 servers with E5-2600 series processors features several
advancements over ProLiant G6 and G7 servers, including the following:
• An increase to 4 memory channels per processor
• A maximum memory speed of 1600 MT/s with the capability to support up to 1866 MT/s on future processor models.
• Support for HP SmartMemory with extended performance features over 3
rd
Party memory.
• Support for LRDIMM technology, which allows three quad-ranked DIMMs per channel.
Figure 1shows a block diagram of this new memory architecture.