Ran into this issue at a customer on a set of IBM x3950 servers with 4Gibt Qlogic HBAs when installing VI3. This was tricky to find, so I hope this helps anyone in a similar situation...
The following will occur when a 266Mhz adapter is installed in a PCIX slot and it is configured to run in Mode-2 or Automatic (Advanced PCIX Settings) during a Reset (Cnt/Alt/Del, Reset Button, Operating System Restart, Hot Plug Latch):
the server will poweroff
the PCIX LED will be lit on the Light Path Panel
a 1.5v Power Good Fault will be in the RSA and/or
Baseboard Management Controller (BMC) logs
RSA logs contain the following events:
1 INFO SERVPROC 04/09/07 10:08:55 Node powered off
2 INFO SERVPROC 04/09/07 10:08:55 System Complex Powered Down
3 ERR SERVPROC 04/09/07 10:08:49 1.5V Power Good Fault
4 INFO SERVPROC 04/09/07 10:08:49 Node reset
BMC logs contain the following events:
168 A8 5 System Reset 5= Mon Apr 09 07:17:58 2007, #168 svc02010318a 05 00 02 A6 E8 19 46 20 00 04 18 A8 03 A1 20 04
181 B5 6 PCI-X Board or Native I/O Power Failure 6= Mon Apr 09 07:17:59 2007, #181 svc02010315a 06 00 02 A7 E8 19 46 20 00 04 15 B5 03 A1 00 20
169 A9 7 System Power On/OFF 7= Mon Apr 09 07:17:59 2007, #169 svc02010318a 07 00 02 A7 E8 19 46 20 00 04 18 A9 03 81 04 FF
169 A9 8 System Power On/OFF 8= Mon Apr 09 07:18:03 2007, #169 svc02010318a 08 00 02 AB E8 19 46 20 00 04 18 A9 03 81 08 FF
1 01 9 Power Off 9= Mon Apr 09 07:18:04 2007, #1 svc02006F09a 09 00 02 AC E8 19 46 20 00 04 09 01 6F 00 FF FF
Affected configurations
The system may be any of the following IBM servers:
System x3800, type 8865, any model
System x3800, type 8866, models
System x3850, type 8863, any model
System x3850, type 8864, models
System x3950, type 8872, any model
System x3950, type 8878, models
System x3950E, type 8874, any model
System x3950E, type 8879, models
xSeries 260, type 8865, any model
xSeries 366, type 8863, any model
xSeries 460, type 8872, any model
xSeries MXE 460, type 8874, any model
\- This Tip is not software specific.
\- This Tip is not option specific.
Solution
Update to BMC-05I or later for the following machine types:
xSeries 366/System x3850 (type 8863)
xSeries 260/System x3800 (type 8865)
xSeries 460/System x3950 (type 8872)
xSeries 460MXE/System x3950E (type 8874)
Update to BMC-20A or later for the following machine types:
System x3850 (type 8864)
System x3800 (type 8866)
System x3950 (type 8878)
System x3950E (type 8879)
The Target Date is scheduled for Second Quarter 2007.
The file is available from the IBM System x Support web site at the following URL:
http://www.ibm.com/systems/support/
Workaround
Run all 266Mhz cards in Mode-1:
Enter BIOS Setup
Select Advanced Setup
Select Advanced PCIX settings
Select PCIX Mode-2 Speed Capability Menu. There may be two different options:
a) Change Automatic Selection or Select Mode-2 to Select Mode-1.
b) Slotx Disable PCIX 266MHz Mode-2 from Disable to Enable.
Additional Information
Due to a sensitive controller on the 1.5v voltage regulator, the Power Good line is reacting to the Reset condition resulting in the dropping of the Power Good line and the server.
All 266Mhz Mode-2 adapters run off the 1.5v power rail. All 266Mhz Mode-1 adapters use the 3.3v power rail. Assigning Mode-1 eliminates the 1.5v glitch. Running the adapters in Mode-1 can result in a small performance impact.
The BMC fix eliminates the 1.5v sense. This error could be removed from BMC checking because it was a redundant power check. There is additional logic that handles all other power conditions (OC, OV) that may occur.