114 SPARC Enterprise T5440 Server Service Manual • June 2011
■“Memory Bank Configurations” on page114
Supported FB-DIMM ConfigurationsUse these FB-DIMM configuration rules to help you plan the memory configuration
of your server:
■Up to 16 FB-DIMMs can be installed in each CMP/memory module pair.
■Each bank consists of four FB-DIMMs.
■Each bank must be populated completely, never partially.
■For each CPU/Memory module pair, all FB-DIMMs must be of the same capacity,
either 2 GB, 4 GB or 8 GB per FB-DIMM.
■Memory bank 0 must always be populated.
■Memory bank 1 must be populated before banks 2 and 3.
■Memory banks 2 and 3 must be populated simultaneously and completely.
■The number of FB-DIMMs installed on a processor and its associated memory
expansion module must be either 4, 8 or 16. No other combinations are
supported.
■4 GB FB-DIMMs at 800 Mhz are available for 1.6-Ghz systems only and cannot be
mixed with other FB-DIMMs of different speed within the same system.
Memory Bank ConfigurationsThe following table describes the supported memory configurations, and the order in
which FB-DIMMs must be added.
Bank 1, if filled, must contain
FB-DIMMs of the same capacity as
Bank 0
Banks 2 and 3 must be either
completely empty or completely filled.
If filled, they must have the FB-DIMMs
of the same capacity as Banks 0 and 1
CPU Module
(Includes
Memory Bank 0) Memory Module (Includes Memory Banks 1, 2 and 3.)
Configuration Number Memory Bank 0 Memory Bank 1 Memory Bank 2 Memory Bank 3 Total Memory
Configuration 14 x 2 Gbyte–––8 GBytes
Configuration 2 4 x 2 GByte 4 x 2 GByte – – 16 GBytes
Configuration 3 4 x 2 GByte 4 x 2 GByte 4 x 2 GByte 4 x 2 GByte 32 GBytes
Configuration 4 4 x 4 GByte – – – 16 GBytes
Configuration 5 4 x 4 GByte 4 x 4 GByte – – 32 GBytes