Dell PowerEdge M420 Hardware Owner's Manual - Page 109

Table 1-26. Blade Messages (continued) Message Causes Corrective Actions 128-Bit Advanced ECC Mode Disabled - For 128-Bit Advanced ECC mode, ECC DIMMs must be used. The memory Reconfigure the memory configuration does not modules to support match the setting in BIOS. Advanced ECC mode. See The BIOS setting has been "System Memory" on disabled. page 159. DIMMs must be installed in pairs. Pairs must be matched in size and geometry Sparing Mode Disabled - For Sparing mode, matched sets of three must be populated across slots. The memory Reconfigure the memory configuration does not modules for Memory match the setting in BIOS. Sparing mode. See "System The BIOS setting has been Memory" on page 159. disabled. The following DIMM's should match in size: in rank count: in size and rank count: Invalid memory configuration. The specified DIMMs do not match in size, number of ranks, or number of data lanes. Ensure that the memory modules are installed in a valid configuration. See "System Memory" on page 159. in geometry: in size and geometry: Thermal sensor not detected on Invalid memory configuration. A mismatched DIMM is installed. Ensure that the memory modules are installed in a valid configuration. See "System Memory" on page 159. About Your System 109