DS4300 Logical Drive Not On Preferred Path

大家有没有碰到DS4300 存储诊断提示该错误呢？

环境： ds4300 接两台交换机  两个arry ,

登陆sm查看，发现所有lun链路都切到A控上了，通过手工可以切到B控上。

从日志查看，有一台交换机掉过电，也就是说发生切换了。起初配置LUN 的时候，默认都配置为B控（是不是和这个有关系）

那现在能否更改preferred path， 让链路更加均衡。存储也不在报错，现在手动更改路径后，recheck后，不管用？

报错依旧，大家看看哪里问题？

Possible causes include:

The controller failed a manually initiated diagnostic test and was placed Offline.
The controller was manually placed Offline using the Advanced >> Recovery >> Place Controller >> Offline menu option.
There are disconnected or faulty cables.
A Hub or Fabric switch is not functioning properly.
A host adapter has failed.
The storage subsystem contains a defective RAID controller