Memory accessories - IBM Flex System p24L Compute Node

Description Marketing part number Replacement part number CRU/FRU type
2 GB DDR3 1066 MHz LP RDIMM w/o HS 78P1011 78P1011
4 GB DDR3 1066 MHz VLP RDIMM 78P0501 78P0501
8 GB DDR3 1066 MHz VLP RDIMM w/ HS 78P0502 78P0502
16 GB DDR3 1066 MHz LP RDIMM w/ HS 78P0639 78P0639


There are 16 buffered DIMM slots on the p24L for a maximum of 256 GB (16x 16 GB DIMMs).

The memory-placement rules are as follows:

  • Install DIMM fillers in unused DIMM slots to ensure proper cooling.
  • Install DIMMs in pairs. Both need to be the same size.
  • Both DIMMs in a pair must be the same size, speed, type, and technology. You can mix compatible DIMMs from multiple manufacturers.
  • Install only supported DIMMs, as described on the IBM ServerProven website:

Storage configuration impact to memory configuration

  • If HDDs are chosen, then only very-low-profile (VLP) DIMMs can be used because of internal spacing. There is not enough room for the 2.5-inch drives to be used with low-profile (LP) DIMMs. Verify your memory choice to make sure it is compatible with the local storage configuration.
  • The use of SSDs does not have the same limitation, and LP (or VLP) DIMMs can be used with SSDs.

Applicable countries and regions


Document id:  MIGR-5090314
Last modified:  2015-01-21
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