HP ProLiant BL20p G4 Server-Blade - Manual (Page 26)

Hardware options installation 26
13. Install the heatsink and close the heatsink retaining latch.
14. Install the access panel (on page 17 ).
15. Install the server blade (" Installing a server blade " on page 20 ).
16. Power up the server blade (on page 15 ).
NOTE: By default, the server blade powers up on installation.
Memory option
The server blade ships with two FBDIMMs installed. The server blade supports up to 32 GB of memory.
CAUTION: Use only HP FBDIMMs. FBDIMMs from other sources may adversely affect data integrity.
FBDIMM guidelines
Observe the following FBDIMM installation guidelines:
• All FBDIMMs must be PC-5300 DDR2 667-MHz SDRAM FBDIMMs.
• Both FBDIMM slots in a memory bank must be populated.
• Both FBDIMMs in a memory bank must be identical.
• If mixing dual- and single-rank FBDIMMs, the dual-rank FBDIMMs must be installed in memory bank
1.
Single- and dual-rank FBDIMMs
PC3200 FBDIMMs can either be single- or dual-rank. While it is not normally important for you to
differentiate between these two types of FBDIMMs, certain FBDIMM configuration requirements are based
on these classifications.
Certain configuration requirements exist with single- and dual-rank FBDIMMs that allow the architecture to
optimize performance. A dual-rank FBDIMM is similar to having two separate FBDIMMs on the same
module. Although only a single FBDIMM module, a dual-rank FBDIMM acts as if it were two separate
FBDIMMs. The purpose of dual-rank FBDIMMs is to provide the largest capacity FBDIMM given the
current FBDIMM technology. If the maximum FBDIMM technology allows for 2-GB single-rank FBDIMMs, a
dual-rank FBDIMM using the same technology would be 4-GB.