I have two x3690's that I am trying to install ESXi 5.1. When I install 16GB memory sticks, ESXi hangs at the kernel initialization. If I use 8G sticks of memory, everything works properly.
x3690 x5 MT 7148
Two Intel x6550 (8 core) processors
Memory tray installed
Minimal memory (4 x 16GB sticks), slots 1, 8, 17 & 24
Memory - 16GB PC3-8500R 4Rx8 (IBM part # 46c7477)
Any ideas why it won't boot or complete a memory test? Is there a BIOS setting that should be set?