HP ProLiant BL620c - G7 Server Troubleshooting Manual page 49

Server fails to recognize existing memory
Action:
Reseat the memory. Use care when handling DIMMs
1.
Be sure the memory is configured properly. See the server documentation.
2.
Be sure a memory count error did not occur
3.
message displaying memory count during POST.
Server fails to recognize new memory
Action:
Be sure the memory is the correct type for the server and is installed according to the server
1.
requirements. See the server documentation or HP website (http://www.hp.com).
Be sure you have not exceeded the memory limits of the server or operating system. See the server
2.
documentation.
Be sure no Event List error messages are displayed in the IML
3.
page 76).
Be sure the memory is seated properly
4.
Be sure no conflicts are occurring with existing memory. Run the server setup utility.
5.
Test the memory by installing the memory into a known working server. Be sure the memory meets
6.
the requirements of the new server on which you are testing the memory.
Replace the memory. See the server documentation.
7.
Server fails to boot, all DIMM LEDs illuminate amber, ....
...the health LED is blinking red, the system emits continuous beeps, and an entry is logged to the Integrated
Management Log (IML)
Possible cause: The server is an HP ProLiant G6 server with 5500-series Xeon processors installed. The
DIMMs are not installed according to the server requirements.
Action: Be sure the memory is the correct type for the server and is installed according to the server
requirements.
•
Do not mix Unbuffered and Registered PC3 DIMMs.
•
Populate DIMM slots for a processor only if the processor is installed.
•
If Unbuffered DIMMs are installed, each channel supports a maximum of two DIMMs.
•
If quad-rank DIMMs are installed for a processor, a maximum of two DIMMs can be installed on
each channel for that processor.
•
If a channel contains quad-rank DIMMs, the quad-rank DIMM must be installed first on that channel.
For more information, see the server documentation on the HP website (http://www.hp.com/support).
If the system is configured with HP iLO 2 Firmware version 1.75, the IML message reports the following
message:
Uncorrectable Memory Error (Module Unknown)
This does NOT indicate a failed DIMM; this only indicates a DIMM configuration error.
("DIMM handling
("Memory count error
("Integrated Management
("DIMM handling guidelines" on page 19).
guidelines" on page 19).
exists" on page 48). See the
Log" on
Hardware problems 49