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01-24-2013 10:18 AM
how-to install/configure online spare memory in HP Proliant Gen8 server
Hello. I purchased a DL360p Gen8 server with six 8 GB DDR3 DIMMs so that I could have 32 GB of RAM and two online spares. So in board 1 I installed two of the DIMMs and the same in board 2. So far so good: The system recognizes the 32 Gigs and so does the O/S (Win 2008 R2 Server Std Ed). However, I cannot find the document that explains what slots to use for the online spares, and how do I tell the BIOS that these are spares? I tried using the last slots in boards 1 and 2 (as a guess) but the bios says they are not installed correctly. Any help would be greatly appreciated.
01-24-2013 02:05 PM
Re: how-to install/configure online spare memory in HP Proliant Gen8 server
The Quickspecs has this information on memory configuration. I think the decal on the may contain similar info
General Memory Population Rules and Guidelines:
- White DIMM slots denote the first slot of a channel. For 1 DPC (DIMM per channel) populate white slots only.
- A minimum of one DIMM is required per server.
- When using HDIMM, 12 DIMMs per processor must be populated.
- Install DIMMs only if the corresponding processor is installed.
- If only one processor is installed in a two processor system, only half of the DIMM slots are available.
- To maximize performance, it is recommended to balance the total memory capacity between all installed
processors and to load the channels similarly whenever possible.
- When two processors are installed, balance the DIMMs across the two processors.
- Populate DIMMs from heaviest load (quad-rank) to lightest load (single-rank) within a channel. Heaviest load
(DIMM with most ranks) within a channel goes furthest from the processor.
- The Intel Xeon E5-2620 processor does not support DIMMs at 1.35V. Using the HP RBSU, 1.35V DIMMs
can be changed to operate at 1.5V.
- Do not mix UDIMMs, RDIMMs,LRDIMMs or HDIMMs.
- RDIMMs operating at either 1.35V or 1.5V may be mixed in any order, but the system will power them at the
- DIMMs of different speeds may be mixed in any order; the server will select a common optimal speed.
- The maximum memory speed is a function of the memory type, memory configuration, and processor model.
- The maximum memory capacity is a function of the memory type and number of installed processors.
- HP memory from previous generation servers is not compatible with the DL360p Gen8 Server. Certain HP
SmartMemory features such as memory authentication and enhanced performance may not be supported.
- To realize the performance memory capabilities listed in this document, HP SmartMemory is required. For
additional information, please see the HP SmartMemory QuickSpecs at:
- For memory population rules and additional memory guidelines, please see the DL360p Gen8 user guide at
- There are four (4) Memory channels per processor; eight (8) channels per 2 processor server .
- There are three (3) DIMM slots for each memory channel; twenty four (24) total slots for 2 processor server .
- Memory channels1 and 3 consists of the three (3) DIMMs that are furthest from the processor .
- Memory channel 2 and 4 consists of the three (3) DIMMs that are closest to the processor.
Page 46 of the users guide also has details on memory
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