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If there is one or more Sun Quad Port Gigabit Ethernet PCIe Low Profile Adapter Cards installed in the server, then the BIOS might detect a condition where legacy I/O address space resources are exhausted. The following example is a common form of error that might be logged:
6491 Tue Dec 7 14:19:57 2010 IPMI Log minorID = a5a9 : 12/07/2010 : 14:19:57 : System Firmware Error :sensor number= 0x00 : PCI resource exhaustion: Bus 147 Device 0 Func 06490 Tue Dec 7 14:19:57 2010 IPMI Log minorID = a5a8 : 12/07/2010 : 14:19:57 : System Firmware Error :sensor number= 0x00 : PCI resource exhaustion: Bus 147 Device 0 Func 1
To eliminate the PCI resource exhaustion condition, disable I/O resource allocation for any slot in which the Quad Gigabit Ethernet card is installed unless you intend to use that card as a bootable device.
If you intend to use that Quad Gigabit Ethernet card as a bootable device, and you are encountering a PCI resource exhaustion event for that specific device, then you must disable I/O allocation for some of the other card slots in the system. In general, it is safe, but not typically required, to disable I/O resource allocation for any cards not intended to be used as bootable devices, similar to the disabling of Option ROMs.