◦
1.28TB MCL PCIe ioDuo (part number 641027-B21)
may experience thermal throttling when the server is running a System ROM dated July 27,
2010 (2010.07.27) or July 7, 2010 under both of the following conditions:
◦
An application has sustained high WRITE-bandwidth demands to the HP IO Accelerators.
◦
High ambient (data center) temperature (>25deg C).
When the IO accelerator card begins thermal throttling, the system will display the following
warnings: Thermal throttling activated (<junction temp in degC>)When the IO accelerator
card stops thermal throttling, the system will display the following warning: Thermal throttling
deactivated (<junction temp in degC>)The above warning messages will be logged as follows:
◦
For Linux operating systems in: /var/log/messages
◦
For Windows operating systems in: the Windows system event log.
To avoid the temperature messages, perform either of the following:
◦
Accept "reduced write bandwidth" when prompted by the server. (With reduced cooling,
the IO Accelerator cards will self manage the critical internal component temperature to
stay within specifications. With no firmware change, the IO Accelerator cards will reduce
WRITE bandwidth to remain within temperature specifications. The expected WRITE
bandwidth reduction is relatively small.)
◦
Upgrade the System ROM to a version dated January 27, 2011 (1/27/2011) or later.
NOTE:
When the HP ProLiant DL980 G7 server is configured with the Low-profile PCI
Express I/O expansion kit (Option Part Number AM434A) and no additional I/O backplane
options are installed, I/O devices installed in the Low Profile I/O backplane may not function,
causing the operating system to generate a machine check when attempting to access the
devices.
When this occurs, a message similar to the following will be displayed in the Integrate
Management Log (IML):Uncorrectable Machine Check Exception (Board 0, Processor 5 or 6,
APIC ID 0x000000A0, Bank 0x0000000B or 0x0000000C, Status 0xFA000000'00160F0F,
Address 0x00000000'00000000, Misc 0x65000000'00000090)This is targeted to be
resolved in a future version of the System ROM. As a workaround, perform either of the
following:
◦
Remove the Low-profile PCI Express I/O expansion kit (Option Part Number AM434A)
◦
Order either of the following I/O backplane options and then add them to the server:
–
PCI Express I/O expansion kit option part number 588139-B21
–
PCI-X / PCI Express I/O expansion kit option part number 588137-B21
NOTE:
ProLiant DL980 G7 servers may be unable to provide MMIO (Memory Mapped
I/O) memory to all slotted PCI devices during Power-On Self-Test (POST) in large I/O
configurations, resulting in the following warning message:
NOTE:
Five or more PCIe IO Accelerator Cards are now supported when running DL980
G7 System ROM version 2011.01.27 (or later) and PCIe IO Accelerator Card firmware driver
version 2.2.3 (or later).
The server supports up to 5 low profile PCI Express expansion slots in the optional low profile PCI
Express expansion module.
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Removal and replacement procedures
