Here are the DIMM mount conditions:
■In each group, 4 DIMMs are mounted in a unit.
■The capacity of the DIMMs in group A must be equal to or larger than the capacity of the DIMMs in group B. You need not necessarily mount DIMMs in group B.
■In each of the groups, mount the DIMM of same capacity and of same rank. The DIMMs of different capacity can’t be mixed in a group.
To replace with the DIMMs of different capacity or different rank, you need to follow the above conditions on every memory board in the same CMU.
22 SPARC Enterprise M4000/M5000 Servers Product Notes for XCP Version 1041 • July 2007