Redistributing Logical Drives

Use this option to move logical drives back to their preferred owners . Typically, multi-path drivers move logical drives from their preferred controller owner when a problem occurs along the data path between the host and storage subsystem.

Important: This option is not available if all logical drives currently are owned by their preferred controllers, or if no logical drives exist on the storage subsystem.
Caution: If you use this option without a multi-path driver on the hosts, stop I/O to the logical drives while this operation is in progress to prevent application errors.

Procedure

1

From the Subsystem Management Window, either select the Storage Subsystem >> Redistribute Logical Drives pull-down menu option or use the right mouse button to select the storage subsystem in the Logical View. Then, select Redistribute Logical Drives from the pop-up menu.

Result: The Redistribute Logical Drives confirmation dialog is displayed.

2

Select Yes.

Result: All storage subsystem logical drives are redistributed to their preferred owners. Selecting a logical drive in the Logical View displays an association dot next to the controller in the Physical View that is both the current owner and the preferred owner.

Important: Under certain application host operating system environments, a reconfiguration of the multi-path host driver might be an additional requirement. You also may need to make operating system modifications to recognize the new I/O path to the logical drives.