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MSA1000 showing incorrect function in disk management

MAH_2
Regular Advisor

MSA1000 showing incorrect function in disk management

Hi, I have one MSA1000 with 2 controllers.
Active standby configuration. I have connectd this MSA with Server 2008 R2 . Presented the LUN from the storage to the server. When I start initialise the disk from the windwos disk manager, I am getting the error "incorrecet function ". I am not able to do anything. I am using Microsoft MPIO. I am not able to see any HP MPIO for 2008 R2.

When I disconnet the one of the controller , I can initialise and format the disk.

The storage is using single port HUB for each controller and both the controller is connected to one compaq SAN switch.

Any idea why I am getting this error , when I connect both the controller????