dac 存储控制器报错 请教此问题如何解决

aix双机 带了存储  我也是远程  基本服务什么的都很正常  
但是  2个小机的黄灯都亮了 存储的黄灯确实没亮的
双机a 机器报 dac1错误
      b 机器dac0  dac1 交替报错     报的都是PH错误   
lsdev  看了下dac0 dac1都是可用状态
   b机的errpt部分如下         
B9735AF4   1102090111 P H dac1           SUBSYSTEM COMPONENT FAILURE
B9735AF4   1102090111 P H dac0           SUBSYSTEM COMPONENT FAILURE
B9735AF4   1101220011 P H dac1           SUBSYSTEM COMPONENT FAILURE
B9735AF4   1101220011 P H dac0           SUBSYSTEM COMPONENT FAILURE
B9735AF4   1101170511 P H dac1           SUBSYSTEM COMPONENT FAILURE
B9735AF4   1101170511 P H dac0           SUBSYSTEM COMPONENT FAILURE
IDENTIFIER:     B9735AF4
Date/Time:       Wed Nov  2 09:01:36 BEIST 2011
Sequence Number: 2566
Machine Id:      00C8BEB24C00
Node Id:         kakuserver
Class:           H
Type:            PERM
Resource Name:   dac1
Resource Class:  array
Resource Type:   ibm-dac-V4
Location:        U789C.001.DQDE858-P1-C2-T1-W200500A0B85137A6
VPD:
        Manufacturer................IBM
        Machine Type and Model......1814      FAStT
        Part Number.................24288-00
        ROS Level and ID............0916
Description
SUBSYSTEM COMPONENT FAILURE
Probable Causes
ARRAY DASD MEDIA
POWER OR FAN COMPONENT
Failure Causes
ARRAY DASD MEDIA
POWER OR FAN COMPONENT
        Recommended Actions
        PERFORM PROBLEM DETERMINATION PROCEDURES
B9735AF4   1102090111 P H dac1           SUBSYSTEM COMPONENT FAILURE
B9735AF4   1102090111 P H dac0           SUBSYSTEM COMPONENT FAILURE
B9735AF4   1101220011 P H dac1           SUBSYSTEM COMPONENT FAILURE
B9735AF4   1101220011 P H dac0           SUBSYSTEM COMPONENT FAILURE
B9735AF4   1101170511 P H dac1           SUBSYSTEM COMPONENT FAILURE
B9735AF4   1101170511 P H dac0           SUBSYSTEM COMPONENT FAILURE
IDENTIFIER:     B9735AF4
Date/Time:       Wed Nov  2 09:01:36 BEIST 2011
Sequence Number: 2566
Machine Id:      00C8BEB24C00
Node Id:         kakuserver
Class:           H
Type:            PERM
Resource Name:   dac1
Resource Class:  array
Resource Type:   ibm-dac-V4
Location:        U789C.001.DQDE858-P1-C2-T1-W200500A0B85137A6
VPD:
        Manufacturer................IBM
        Machine Type and Model......1814      FAStT
        Part Number.................24288-00
        ROS Level and ID............0916
Description
SUBSYSTEM COMPONENT FAILURE
Probable Causes
ARRAY DASD MEDIA
POWER OR FAN COMPONENT
Failure Causes
ARRAY DASD MEDIA
POWER OR FAN COMPONENT
        Recommended Actions
        PERFORM PROBLEM DETERMINATION PROCEDURES



请教这是什么意思   该如何解决