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Controller Assignment

Selecting a Server to Manage a Controller

For managing and monitoring the array, the SANscape Agent needs to have access to a host LUN mapped to a partition of a logical drive assigned to the primary controller.

The SANscape Agent ignores all host LUNs mapped to a partition of a logical drive assigned to a secondary controller in a redundant configuration of an array.

If the same array is connected to multiple servers, it is possible to have the SANscape Agent running on each of these servers trying to manage and monitor the same array. Due to a restriction on monitoring commands to the array sent to the controller by only one server at a time, some monitoring commands might fail if sent simultaneously by multiple servers. This could cause inaccurate reporting or the SANscape processes to stop responding. To prevent this from happening, the SANscape Agent can be configured to enable/disable array monitoring on a server using the following method.

Assigning a Controller Through the Console

CAUTION: SANscape can monitor and manage up to 32 arrays at one time. However, console response time can decrease as the number of arrays increases.

  1. Make sure all directly attached servers were added following the procedures in Adding a Server. This ensures that both Host names are present under Controller Assignments.
  2. From the main window, click Array Administration > Controller Assignment. The Assign Server to Manage a RAID Controller window is displayed.
  3. Select a server from the Server to Manage this controller list box.
  4. Click Apply.
  5. This enables the selected server to manage an array controller. It also disables all other servers listed on the list box from managing the same array.

  6. Click Close to close the view.
  7. The main window shows the array controller device icon only under the server where the monitoring is enabled for this array.

    For information on changing a server assignment, see Changing a Server Assignment.

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