HP ProLiant SL270s Gen8 Server - Manual (Page 31)

Hardware options installation 31
13. Install the heatsink.
14. Install the air baffle.
15. Install the server into the chassis.
16. Power up the server.
Memory options
IMPORTANT: This server does not support mixing LRDIMMs, RDIMMs, or UDIMMs. Attempting
to mix any combination of these DIMMs can cause the server to halt during BIOS initialization.
The memory subsystem in this server can support LRDIMMs, RDIMMs, or UDIMMs. All three types are referred
to as DIMMs when the information applies to all three types. When specified as LRDIMM, RDIMM, or
UDIMM, the information applies to that type only. All memory installed in the server must be the same type.
The server supports the following DIMM speeds:
• Single-rank and dual-rank PC3-12800 (DDR-1600) DIMMs operating at 1600, 1333, and 1066 MHz
• Single-rank and dual-rank PC3-10600 (DDR-1333) DIMMs operating at 1333 and 1066 MHz
• Quad-rank PC3-10600 (DDR-1333) LRDIMMs operating at 1333 and 1066 MHz
Depending on the processor model, the number of DIMMs installed, and whether LRDIMMs, UDIMMs, or
RDIMMs are installed, the memory clock speed might be reduced to 1333, 1066 or 800 MHz. For more
information on the effect of DIMM slot population, see "General DIMM slot population guidelines (on page
35 )."
HP SmartMemory
HP SmartMemory, introduced for Gen8 servers, authenticates and unlocks certain features available only on
HP Qualified memory and verifies whether installed memory has passed HP qualification and test processes.
Qualified memory is performance-tuned for HP ProLiant and BladeSystem servers and provides future
enhanced support through HP Active Health and manageability software.