ds5020+2台2498-b24+2台p720(aix7.1) 阵列报错

这台ds5020会报黄色叹号，不过会自行恢复，然后过段时间又报黄色叹号，不知道问题出现在哪里，请求指点，谢谢！
错误信息，如下：

Date/Time: 13-11-28 16:03:41
Sequence number: 3553
Event type: 4011
Description: Logical Drive not on preferred path due to ADT/RDAC failover
Event specific codes: 0/0/0
Event category: Error
Component type: Controller
Component location: Enclosure 85, Slot B
Logged by: Controller in slot B

Raw data:
4d 45 4c 48 03 00 00 00 e1 0d 00 00 00 00 00 00
11 40 18 01 dd f8 96 52 00 00 00 00 00 00 00 00
00 00 00 00 01 00 00 00 22 00 00 00 22 00 00 00
08 00 00 00 55 00 00 00 02 00 00 00 01 00 00 00
0a 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
01 00 00 00 00 00 01 00 00 00 00 00收起