Controller tree object Changing the rebuild rate

Note: This action is supported in bootable-CD mode only.

Use this action to change the rebuild rate. The rebuild rate determines the rate that the data from a failed physical drive is rebuilt to a new or hot-spare drive.


  1. In the Enterprise view, click Controller (controller).

  2. Right-click Change rebuild rate a rebuild rate. The following choices are available:

When the rebuild rate is High, the rebuild I/O request gets high priority in the controller execution order.

If you change the rebuild rate from High to Medium in a heavily loaded system, the rebuild time can increase but provide better system performance.

If you change the rebuild rate from High or Medium to Low in a moderate to heavily loaded system, the rebuild time can increase, but provide better system performance.


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