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3ware® CLI Guide > CLI Syntax Reference > Controller Object Commands > /cx set autorebuild=on|off

/cx set autorebuild=on|off
This feature only applies to 9000 series SX/SE/SA model controllers.
This command turns the Auto-Rebuild policy on or off. By default, autorebuild is on.
If the policy is on the firmware will select drives to use for rebuilding a degraded unit using the following priority order.
1. Smallest usable spare.
2. Smallest usable unconfigured (available) drive.
3. Smallest usable failed drive.
 
Note: Failed drives can be drives that have mechanically failed, or they can be drives that have been disconnected from the controller long enough to cause a drive timeout error and for the controller to classify them as failed.
Enabling Auto-Rebuild allows you to add a drive to the controller and have it be available for a rebuild as soon as you tell the controller to rescan, without having to specify it as a spare. It also means that if you accidentally disconnect a drive (causing the controller to see it as a failed drive) and then reconnect it, the controller will automatically try to use it again.
If the policy is off, spares are the only candidates for rebuild operations.
Example:
//localhost> /c0 set autorebuild=enable
Setting Auto-Rebuild Policy on /c0 to enable ... Done.

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