VNX5100双控启动都报Fan-Pack Failure导致存储无法正常启动

大家好，最近遇到一个比较奇怪的故障，各位兄弟如有好的建议，感谢提供。具体信息如下：

1、有一台VNX5100，机房掉电导致存储掉电，重新加电后，发现存储启动了一会后即无任何反应，前面板硬盘灯不亮，后面电源和电池指示灯都是正常常绿。

2、通过串口线收集启动信息，发现A控制器和B控制器都提示Fan-Pack Failure，然后启动步骤都是停在int13 - EXTENDED READ (4200)，如下：

************************************************************

*                 Extended POST Messages

************************************************************

INFORMATION: POST Start

WARNING: Fan-Pack Failure

WARNING: Fan Circuitry Failure

INFORMATION: MCU Operating mode changed from Linux to Clariion

WARNING: MCU environmental event found

************************************************************

DDBS: K10_REBOOT_DATA: Count = 9

DDBS: **** Warning: Reboot count exceeded.  This SP is booting in DEGRADED MODE.

DDBS: K10_REBOOT_DATA: State = 1

DDBS: K10_REBOOT_DATA: ForceDegradedMode = 0

DDBS: SP A Normal Boot Partition

DDBS: MDDE (Rev 600) on disk 0

DDBS: MDDE (Rev 600) on disk 2

DDBS: MDB read from both disks.

DDBS: Chassis and disk WWN seeds match.

DDBS: First disk is valid for boot.

DDBS: Second disk is valid for boot.

FLARE image (0x00400007) located at sector LBA 0x09D3D802

Disk Set: 0 2

Total Sectors: 0x0A7FD000

Relative Sectors: 0x00000800

Calculated mirror drive geometry:

Sectors: 63

Heads: 255

Cylinders: 10964

Capacity: 176150528 sectors

Total Sectors: 0x0A7FD000

Relative Sectors: 0x00000800

Calculated mirror drive geometry:

Sectors: 63

Heads: 255

Cylinders: 10964

Capacity: 176150528 sectors

EndTime: 09/13/2017 05:55:41

int13 - RESET (1)

int13 - CHECK EXTENSIONS PRESENT (3)

int13 - CHECK EXTENSIONS PRESENT (5)

int13 - GET DRIVE PARAMETERS (Extended) (6)

int13 - EXTENDED READ (200)

int13 - EXTENDED READ (400)

int13 - EXTENDED READ (600)

int13 - READ PARAMETERS (800)

int13 - READ PARAMETERS (802)

int13 - DRIVE TYPE (803)

int13 - CHECK EXTENSIONS PRESENT (804)

int13 - GET DRIVE PARAMETERS (Extended) (805)

int13 - READ PARAMETERS (806)

int13 - EXTENDED WRITE (845)

int13 - EXTENDED WRITE (846)

int13 - EXTENDED WRITE (847)

int13 - READ PARAMETERS (961)

int13 - DRIVE TYPE (962)

int13 - CHECK EXTENSIONS PRESENT (963)

int13 - GET DRIVE PARAMETERS (Extended) (964)

int13 - READ PARAMETERS (965)

int13 - EXTENDED WRITE (993)

int13 - EXTENDED WRITE (994)

int13 - EXTENDED WRITE (995)

int13 - EXTENDED READ (1000)

int13 - EXTENDED WRITE (1013)

int13 - EXTENDED WRITE (1014)

int13 - EXTENDED WRITE (1015)

int13 - EXTENDED READ (1200)

int13 - EXTENDED READ (1400)

int13 - EXTENDED READ (1600)

int13 - EXTENDED READ (1800)

int13 - EXTENDED READ (2000)

int13 - EXTENDED READ (2200)

int13 - EXTENDED READ (2400)

int13 - EXTENDED READ (2600)

int13 - EXTENDED READ (2800)

int13 - EXTENDED READ (3000)

int13 - EXTENDED READ (3200)

int13 - EXTENDED READ (3400)

int13 - EXTENDED READ (3600)

int13 - EXTENDED READ (3800)

int13 - EXTENDED READ (4000)

int13 - EXTENDED READ (4200)

3、开始以为是风扇问题导致的，所以申请了电源备件进行更换，结果A和B控制器更换了电源模块后，串口输出跟上面的一模一样。现在无法判断是哪里出了问题。望各位兄弟能指点。谢谢！