HP MSA 2040 CLI Reference Guide

show redundancy-mode 279
show redundancy-mode
Description Shows the redundancy status of the system.
Syntax
show redundancy-mode
Output Controller Redundancy Mode
Shows the system’s operating mode, also called the cache redundancy mode:
• Active-Active ULP: Both controllers are active using ULP (Unified LUN Presentation). Data
for volumes configured to use write-back cache is automatically mirrored between the two
controllers to provide fault tolerance.
• Single Controller: The enclosure contains a single controller.
• Failed Over: Operation has failed over to one controller because its partner is not
operational. The system has lost redundancy.
• Down: Both controllers are not operational.
Controller Redundancy Status
• Redundant: Both controllers are operational.
• Operational but not redundant: In active-active mode, one controller is operational and
the other is offline. In single-controller mode, the controller is operational.
• Down: This controller is not operational.
• Unknown: Status information is not available.
Controller
ID Status
• Operational: The controller is operational.
• Down: The controller is installed but not operational.
• Not Installed: The controller is not installed.
Controller
ID Serial Number
• Controller module serial number
• Not Available: The controller is down or not installed.
Other MC Status
The operational status of the Management Controller in the partner controller. This is not factored
into system health.
• Operational
• Not Operational
• Not Communicating
• Unknown
Example From either controller, show the redundancy status of a dual-controller system where both controllers
are operating:
# show redundancy-mode
System Redundancy
-----------------
Controller Redundancy Mode: Active-Active ULP
Controller Redundancy Status: Redundant
Controller A Status: Operational
Controller A Serial Number:
SN
Controller B Status: Operational
Controller B Serial Number:
SN
Other MC Status: Operational
Success: Command completed successfully. (2012-01-18 11:02:36)