Prerequisites: Use the Reset option to reset a controller from within the storage management software.
Attention:
Possible loss of data access – Resetting a controller makes the controller unavailable for I/O until the reset is complete. If a is using owned by the controller being reset, the I/O directed to the controller is rejected. Before resetting the controller, either make sure that the logical drives owned by the controller are not in use, or make sure that a is installed on all of the hosts using these logical drives.