Skip to main content

Reset controller

The reset controller command resets a controller, and is disruptive to I/O operations.

Supported Arrays​

This command applies to an individual DE2000H, DE4000H, DE4000F, DE6000H, or DE6000F storage array.

Roles​

To execute this command on an storage array, you must have the Storage Admin role.

Context​

Attention
When you reset a controller, the controller is removed from the data path and is not available for I/O operations until the reset operation is complete. If a host is using volumes that are owned by the controller being reset, the I/O directed to the controller is rejected. Before resetting the controller, either make sure that the volumes that are owned by the controller are not in use or make sure that a multi-path driver is installed on all of the hosts that use these volumes.
CAUTION
If you use in-band management, you cannot control which controller any command is sent to, and this command can have unexpected results.

Syntax​

reset controller [(<span className="ph">a</span>|<span className="ph">b</span>)]

Parameters​

ParameterDescription
controller The controller that you want to reset. Valid controller identifiers are a or b , where a is the controller in slot A , and b is the controller in slot B . Enclose the controller identifier in square brackets ([ ]). If you do not specify a controller, the storage management software returns a syntax error.

Notes​

The controller that receives the reset controller command resets the controller specified. For example, if the reset controller command is sent to controller A to request a reset of controller A , then controller A reboots itself by doing a soft reboot. If the reset controller command is sent to controller A to request a reset of controller B , then controller A holds controller B in reset and then releases controller B from reset, which is a hard reboot. A soft reboot in some products only resets the IOC chip. A hard reboot resets both the IOC and the expander chips in the controller.