Memory Option; Dimm Guidelines; Single- And Dual-Rank Dimms - HP ProLiant xw25p User Manual

Memory Option

The server blade ships with two DIMMs installed in processor 1 memory bank 1.
The server blade supports up to 16 GB of memory. Each processor has two banks
consisting of two DIMM slots in each bank.

DIMM Guidelines

Observe the following DIMM installation guidelines:
All DIMMs must be PC3200 DDR 400-MHz SDRAM DIMMs.
Both DIMM slots in a memory bank must be populated.
Both DIMMs in a memory bank must be identical.
Processor 1 memory bank 1 must always be populated.
If mixing dual- and single-rank DIMMs, the dual-rank DIMMs must be
installed in memory bank 1.
For optimal performance in most applications, populate memory bank 1 for
every populated processor socket.

Single- and Dual-Rank DIMMs

PC3200 DIMMs can either be single- or dual-rank. While it is not normally
important for you to differentiate between these two types of DIMMs, certain
DIMM configuration requirements are based on these classifications.
CAUTION: Use only HP DIMMs. DIMMs from other sources
may adversely affect data integrity.
Hardware Options Installation 29