HP ProLiant DL980 G7 Maintenance And Service Manual page 33

Depending on the processor model, the memory clock speed might be reduced to 1066 or 800
MHz.
WARNING! There is not enough available PCI memory to allocate to all devices installed in the
system. Devices which were not allocated requested resources may not operate properly.This occurs
during the I/O configuration phase of POST, after the System ROM has allocated most of the
available memory for some PCI devices, leaving insufficient memory for PCI devices that have not
yet been configured.The above message is an indication that the HP ProLiant DL980 G7 server
has encountered this MMIO limitation and does not indicate an issue with the server. It can occur
when the I/O configuration of the server demands resources beyond those which the platform
architecture allows.This message is an indication that the HP ProLiant DL980 G7 server has
encountered this MMIO limitation and does not indicate an issue with the server. It can occur when
the I/O configuration of the server demands resources beyond those which the platform architecture
allows.If some PCI devices are not allocated memory and the warning message appears during
POST, perform one or more of the following potential workarounds to allow the remaining PCI
devices to receive their requested memory allocations:If the server operating system documentation
states that it requires 2GB (or more) of memory below the 4GB address boundary, do not perform
Step 1 below because it may result in operating system boot failure.If the operating system
documentation does not specify its memory requirements below the 4GB boundary, the Step 1
procedure below may be attempted. However, if performing Step 1 results in operating system
boot failure, perform Step 1 again and change Memory Mapped I/O Options to the default value
of 2GB of Memory Mapped I/O , and then perform Step 2 below:
1. Change the MMIO Settings in the ROM-Based Setup Utility (RBSU).
a. Boot the server.
b. Press the F9 key during POST (when the F9 prompt appears).
c. Select Advanced Options.
d. Select Advanced System ROM Options.
e. Select Memory Mapped I/O Options.
f. Change the default selection of 2GB of Memory Mapped I/O to either 3GB of Memory
Mapped I/O or Automatically configure Memory Mapped I/O.
g. Reboot the server and verify that no warning messages appear during POST. If the
operating system will not boot, perform Step 1 again and reset Memory Mapped I/O
Options to the default value of 2GB of Memory Mapped I/O .
2. If the warning message continues to appear, ensure that all slotted PCI devices are using
updated firmware and drivers and reboot the server.
3. If the warning message continues to appear, determine which adapter is least critical for the
operating environment and remove or disable that adapter. Repeat this step until the server
completes POST without displaying this error message.
DIMMs 33