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