Hardware options installation 63
• Always install memory in pairs of two identical DIMMs.
• Install only ECC PC-3200 Registered SDRAM DIMMs that meet the
following specifications:
– Supply voltage - 2.6 volts
– Bus width - 72 bits
• Install DIMMs with the same speed.
• Install DIMMs into both slots within a single bank.
• Memory must be installed in pairs (banks) beginning with banks furthest
away from each populated processor (banks B and D).
• Processor 2 may be installed without memory.
• Any memory installed into banks for processor 2 can be used only if
processor 2 is installed.
CAUTION: Always wear an antistatic wrist strap when working
inside the server.
Installing DIMMs
1. Power down the server ("Powering down the server" on page 35).
2. Extend the server from the rack, if applicable ("Extending the server from the
rack" on page 37
).
3. Remove the access panel.
4. Open the DIMM slot latches.
