HPFOCUS

DL980 memory hemisphere question

Can anyone please find out what happens in the flowing case:

Memory configuration is Hemisphere.

The BIOS deallocated a DIMM.

What happens with Hemisphere mode?

Per the picture below, is there a difference on how the server is configured, and what happens with a DIMM failure?

The 980 only supports hemisphere mode.

In the case of a single memory board failure, the memory board it is paired with will be disabled.

In other words, both memory boards in a pair are required to be functional, and if not, neither will be used.

The answer is for the case of memory board failures. In the case of a DIMM failure, the entire Quad (4 DIMMs) of memory is dealocated. The DIMM deallocation rules are such that the system always runs in hemisphere mode.