Altos R920 Installation Configuration Guide 6Total MemoryDIMM slot Memory board A Memory board B Memory board C Memory board DPhysicalmemoryDetectedby OS1 to 2 2 x 1 GB 2 x 1 GB 2 x 1 GB 2 x 1 GB 8 GB 6 GB1 to 4 4 x 1 GB 4 x 1 GB 4 x 1 GB 4 x 1 GB 16 GB 14 GB1 to 6 6 x 1 GB 6 x 1 GB 6 x 1 GB 6 x 1 GB 24 GB 22 GB1 to 8 8 x 1 GB 8 x 1 GB 8 x 1 GB 8 x 1 GB 32 GB 30 GB1 to 2 2 x 2 GB 2 x 2 GB 2 x 2 GB 2 x 2 GB 16 GB 12 GB1 to 4 4 x 2 GB 4 x 2 GB 4 x 2 GB 4 x 2 GB 32 GB 28 GB1 to 6 6 x 2 GB 6 x 2 GB 6 x 2 GB 6 x 2 GB 48 GB 44 GB1 to 8 8 x 2 GB 8 x 2 GB 8 x 2 GB 8 x 2 GB 64 GB 60 GB1 to 2 2 x 4 GB 2 x 4 GB 2 x 4 GB 2 x 4 GB 32 GB 24 GB1 to 4 4 x 4 GB 4 x 4 GB 4 x 4 GB 4 x 4 GB 64 GB 56 GB1 to 6 6 x 4 GB 6 x 4 GB 6 x 4 GB 6 x 4 GB 96 GB 88 GB1 to 8 8 x 4 GB 8 x 4 GB 8 x 4 GB 8 x 4 GB 128 GB 120 GBNOTE. DIMM slot 1 in memory boards A, B, C, and D isconfigured to sparing unit.Memory population with mirroringPopulation with four memory boardsTotal MemoryDIMM slot Memory board A Memory board B Memory board C(Mirror)Memory board D(Mirror) PhysicalmemoryDetectedby OS1 to 2 2 x 1 GB 2 x 1 GB 2 x 1 GB 2 x 1 GB 8 GB 4 GB1 to 4 4 x 1 GB 4 x 1 GB 4 x 1 GB 4 x 1 GB 16 GB 8 GB1 to 6 6 x 1 GB 6 x 1 GB 6 x 1 GB 6 x 1 GB 24 GB 12 GB1 to 8 8 x 1 GB 8 x 1 GB 8 x 1 GB 8 x 1 GB 32 GB 16 GB1 to 2 2 x 2 GB 2 x 2 GB 2 x 2 GB 2 x 2 GB 16 GB 8 GB1 to 4 4 x 2 GB 4 x 2 GB 4 x 2 GB 4 x 2 GB 32 GB 16 GB1 to 6 6 x 2 GB 6 x 2 GB 6 x 2 GB 6 x 2 GB 48 GB 24 GB1 to 8 8 x 2 GB 8 x 2 GB 8 x 2 GB 8 x 2 GB 64 GB 32 GB1 to 2 2 x 4 GB 2 x 4 GB 2 x 4 GB 2 x 4 GB 32 GB 16 GB1 to 4 4 x 4 GB 4 x 4 GB 4 x 4 GB 4 x 4 GB 64 GB 32 GB1 to 6 6 x 4 GB 6 x 4 GB 6 x 4 GB 6 x 4 GB 96 GB 48 GB1 to 8 8 x 4 GB 8 x 4 GB 8 x 4 GB 8 x 4 GB 128 GB 64 GBNOTE. DIMM slots in memory boards C and D are configured asmirroring units.