Use this option to place a controller in active
The Active option is available only for a selected controller that is currently passive. Conversely, the Passive option is available only for a selected controller that is currently active.
The active-active configuration is recommended over the active-passive configuration for performance reasons.
Caution: If you do not have a multi-path driver installed on the application host and you change a controller from active to passive mode while the application is using the associated logical drives, application errors will occur.
Important: If you change an active controller to passive mode and the other controller of the pair is already in passive mode, an error is displayed and the operation will not complete. At least one controller in the storage subsystem must be in active mode.
How to Change a Controller to Active Mode
1 |
Select the controller in the Physical View; then, select either the Controller >> Change Mode >> Active pull-down menu option, or Change Mode >> Active from the right-mouse pop-up menu. |
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2 |
Select Yes. |
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3 |
Move one or more arrays and their associated logical drives to the newly active controller.
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How to Change a Controller to Passive Mode
1 |
Select the controller in the Physical View; then, select either the Controller >> Change Mode >> Passive pull-down menu option, or Change Mode >> Passive from the right-mouse pop-up menu. |
2 |
Select Yes. |
3 |
If you do not have a multi-path driver installed on the application host, make the appropriate host operating system modifications so that the applications can recognize the new I/O path. |