◦ Do not mix unbuffered DIMMs with registered DIMMs.
◦ A maximum of two unbuffered DIMMs per channel can be installed.
◦ If quad-rank DIMMs are installed for a processor, a maximum of two DIMMs can be
installed on each channel for that processor.
◦ If a channel contains quad-rank DIMMs, the quad-rank DIMM must be installed first on
the channel.
Installing DIMMs
1. Remove the access panel. See “Removing the access panel” (page 43).
2. Lift the memory expansion board handle and remove the component.
3. Install the DIMM.
Installing DIMMs 49