Why is this? I am not using any zones (global only), so memory capping doesn't seem to be the answer and all the DIMM modules show as enabled with no faults when digging into this from the ILOM.
root@alfred:/root# prtdiag
System Configuration: Oracle Corporation sun4v Sun Blade T6320 Server Module G2
Memory size: 2048 Megabytes
================================ Virtual CPUs ================================
CPU ID Frequency Implementation Status
------ --------- ---------------------- -------
0 1415 MHz SUNW,UltraSPARC-T2 on-line
1 1415 MHz SUNW,UltraSPARC-T2 on-line
2 1415 MHz SUNW,UltraSPARC-T2 on-line
3 1415 MHz SUNW,UltraSPARC-T2 on-line
4 1415 MHz SUNW,UltraSPARC-T2 on-line
5 1415 MHz SUNW,UltraSPARC-T2 on-line
6 1415 MHz SUNW,UltraSPARC-T2 on-line
7 1415 MHz SUNW,UltraSPARC-T2 on-line
======================= Physical Memory Configuration ========================
Segment Table:
--------------------------------------------------------------
Base Segment Interleave Bank Contains
Address Size Factor Size Modules
--------------------------------------------------------------
0x0 32 GB 8 4 GB MB/CMP0/BR0/CH0/D0
MB/CMP0/BR0/CH1/D0
4 GB MB/CMP0/BR0/CH0/D1
MB/CMP0/BR0/CH1/D1
4 GB MB/CMP0/BR1/CH0/D0
MB/CMP0/BR1/CH1/D0
4 GB MB/CMP0/BR1/CH0/D1
MB/CMP0/BR1/CH1/D1
4 GB MB/CMP0/BR2/CH0/D0
MB/CMP0/BR2/CH1/D0
4 GB MB/CMP0/BR2/CH0/D1
MB/CMP0/BR2/CH1/D1
4 GB MB/CMP0/BR3/CH0/D0
MB/CMP0/BR3/CH1/D0
4 GB MB/CMP0/BR3/CH0/D1
MB/CMP0/BR3/CH1/D1