求助：ds4800报的错

Logical Drive Not On Preferred Path
What Caused the Problem?
There is a problem accessing the controller listed in the Recovery Guru Details Area. Any logical drives that have this controller assigned as their preferred path will be moved to the non-preferred path (alternate controller). This procedure will help you pinpoint the problem along the data path. Because the logical drives will be moved to the alternate controller, they should still be accessible. Therefore, no action is required on the individual logical drives.


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.

查链路，有条链路不通了。

这个错太常见了，上面解释可能的原因也解释得很清楚

Just drop by and find this thread...