Dell 1955 Hardware Owner's Manual page 35

Table 1-13. Server Module Messages
Message
Alert: DIMM_ n and DIMM_ n
must be populated with a
matched set of DIMMs if
more than 1 DIMM is
present. The following
memory DIMMs have been
disabled:
Alert! Redundant memory
disabled!. Memory
configuration does not
support redundant memory
Alert! Unsupported memory,
incomplete sets, or
unmatched sets. The
following memory DIMMs
have been disabled:
Caution! NVRAM_CLR jumper
is installed on system
board.
CPUs with different cache
sizes detected.
Decreasing available
memory
DIMMs should be installed
in pairs. Pairs must be
matched in size, speed,
and technology.
Causes
The installed memory configuration
does not support redundant memory.
The installed memory configuration is
invalid.
NVRAM_CLR switch is set to "on."
Mismatched processors are installed.
Faulty or improperly installed memory
modules.
Mismatched or unmatched DIMMs
installed; faulty or improperly
installed memory modules. The
system will operate in a degraded
mode with reduced ECC protection.
Only memory installed in channel 0
will be accessible.
Corrective Actions
Ensure that the memory modules are
installed in matched pairs. See "General
Memory Module Installation
Guidelines" on page 78.
Install a memory configuration that
supports redundant memory. See
"General Memory Module Installation
Guidelines" on page 78.
Disable the Redundant Memory option
in the System Setup program. See
"Using the System Setup Program" on
page 43.
Add, move, or remove memory modules
to achieve a configuration supported by
the system. See "General Memory
Module Installation Guidelines" on
page 78.
Set the NVRAM_CLR switch to "off."
See Figure 6-2 for the jumper location.
Install a correct version of the
microprocessor so that both
microprocessors have the same cache
size. See "Processors" on page 84.
Ensure that all memory modules are
properly installed. See "Troubleshooting
Server Module Memory" on page 112.
Ensure that all pairs of memory modules
are of the same type and size and that
they are properly installed. See "General
Memory Module Installation
Guidelines" on page 78. If the problem
persists, see "Troubleshooting Server
Module Memory" on page 112.
About Your System
35