文檔已經交付給用戶了，這里總結一下：

SAP PI的PI服務當在MSCS群集的node1和node2中都啟動的時候，MSCS故障，所有PI資源組會在node1和node2中來回切換，導致Oracle OFS資源和MSCS資源也切換，由于PI占用內存很大，有30GB內存，這樣的自動來回切換約8次后，pubilc網卡down，up多次崩潰。

由于MSCS切換和OFS資源切換都沒有問題，檢查MSCS的集群配置參數，無誤。

檢查操作系統，看是否有不利于MSCS的補丁，無誤

檢查網絡設置和網卡屬性中的BOE offload，RSS，speed，無誤

檢查針對WINDOWS 2003 R2 SP2中的伸縮端縮放，補丁已達，無誤

檢查public和private的網絡千兆交換機環境，無誤

最后發現：

node1和node2的網卡 HP NC357i驅動都是最新的556版本，而node1 的網卡固件是 527版本，node2的網卡固件是534，經查確認，527固件和556驅動不匹配。找到問題了

解決，驅動由于是最新，不必重裝驅動，刷固件

C:\SWSetup\SP50817>nxflash_x64.exe -i private --all
0/8 - Init
*** Currently in flash ***
Board Type?????? : HP NC375i Integrated Quad Port Multifunction Gigabit Server Adapter
Firmware Version : 4.0.534
MAC Address 0??? : 68:B5:99:C4:B2:B8
MAC Address 1??? : 68:B5:99:C4:B2:B9
MAC Address 2??? : 68:B5:99:C4:B2:BA
MAC Address 3??? : 68:B5:99:C4:B2:BB
Serial Number??? : 牋牋牋牋牋牋牋牋牋牋牋牋牋牋牋牋??
NIC binary romimage found in C:\SWSetup\SP50817
Rom Image??????? : C:\SWSetup\SP50817\phantom_romimage
1/8 - Extracting Romimage
Firmware version From Board: 4.0.534
Firmware version From Romimage: 4.0.539
WARNING: This operation will take the NIC offline.
Do you wish to upgrade? (Y/N) y
Disabling devices
Disabling devices
Disabling devices
Disabling devices
Driver Loaded in Quiesce mode
2/8 - Restoring License
?100%? - DONE
?100%? - DONE
No vNIC property area in romimage
No VPD area in romimage
3/8 - Calculating MD5
?100%? - DONE
4/8 - Backing up current flash
?100%? - DONE
Backup file : "flashbackup__v4.0.534_Sat-Oct-13-22-06-50-2012" - completed successfully.
5/8 - Updating flash
WARNING: This is a very sensitive operation.
Do not interrupt until operation is complete.
setting up the flash_write
?100%? - DONE
6/8 - Verifying Flash MD5
Flashing completed successfully.
Reboot system for firmware to take effect
Enabling devices
Enabling devices
Enabling devices
Enabling devices
Driver Loaded in Normal mode
7/8 - Performing cleanup
8/8 - Finished

C:\SWSetup\SP50817>

在2號機node2上

C:\SWSetup\SP50817>nxflash_x64.exe -i private --all
0/8 - Init
*** Currently in flash ***
Board Type?????? : HP NC375i Integrated Quad Port Multifunction Gigabit Server A
dapter
Firmware Version : 4.0.527
MAC Address 0??? : 68:B5:99:B3:3C:58
MAC Address 1??? : 68:B5:99:B3:3C:59
MAC Address 2??? : 68:B5:99:B3:3C:5A
MAC Address 3??? : 68:B5:99:B3:3C:5B
Serial Number??? : 牋牋牋牋牋牋牋牋牋牋牋牋牋牋牋牋??
NIC binary romimage found in C:\SWSetup\SP50817
Rom Image??????? : C:\SWSetup\SP50817\phantom_romimage
1/8 - Extracting Romimage
Firmware version From Board: 4.0.527
Firmware version From Romimage: 4.0.539
WARNING: This operation will take the NIC offline.
Do you wish to upgrade? (Y/N) y
Disabling devices
Disabling devices
Disabling devices
Disabling devices
Driver Loaded in Quiesce mode
2/8 - Restoring License
?100%? - DONE
?100%? - DONE
No vNIC property area in romimage
No VPD area in romimage
3/8 - Calculating MD5
?100%? - DONE
4/8 - Backing up current flash
?100%? - DONE
Backup file : "flashbackup__v4.0.527_Sat-Oct-13-21-06-28-2012" - completed succe
ssfully.
5/8 - Updating flash
WARNING: This is a very sensitive operation.
Do not interrupt until operation is complete.
setting up the flash_write
?100%? - DONE
6/8 - Verifying Flash MD5
Flashing completed successfully.
Reboot system for firmware to take effect
Enabling devices
Enabling devices
Enabling devices
Enabling devices
Driver Loaded in Normal mode
7/8 - Performing cleanup
8/8 - Finished

C:\SWSetup\SP50817>

問題解決！

后來和采購確認，兩臺機器來源采購相差半年，不是同一批次。2號機是開發機，半年后才新購1號機生產機，然后實施的時候開發機和生產機做MSCS PI。

看來實施MSCS的人技術很毛躁，不靠譜。Windows企業環境要更加精細化，對技術素養要更高，因為很多錯誤你無法深入內核解決，我不可能遇到問題就看dump崩潰核心轉儲文件，或者拿出windbg就開工。——當然這是最后的辦法

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