CLI Guide

• Not Installed
Failed Over to This Controller
Indicates whether the partner controller has failed over to this controller:
• No: The partner controller has not failed over to this controller.
• Yes: The partner controller has either failed or been shut down, and its responsibilities have been taken
over by this controller. There will be a delay between the time that the value of Status becomes Down for
one controller and the time that the value of Failed Over to This Controller becomes Yes for the other
controller. This time period is the time that it takes for a controller to take over the responsibilities of its
partner.
Fail Over Reason
If Failed Over to This Controller is Yes, a reason for the failover appears; otherwise, Not applicable appears.
Multi-core
Shows whether the controller module is using multiple processing cores.
• Enabled: Multiple cores are active.
• Disabled: A single core is active.
Health
• OK
•
Degraded
• Fault
• N/A
• Unknown
Health Reason
If Health is not OK, this field shows the reason for the health state.
Health Recommendation
If Health is not OK, this field shows recommended actions to take to resolve the health issue.
Position
Position of the controller in the enclosure:
• Left: The controller is in the left slot.
• Right: The controller is in the right slot.
• Top: The controller is in the top slot.
• Bottom: The controller is in the bottom slot.
Phy Isolation
Shows whether the automatic disabling of SAS expander PHYs having high error counts is enabled or
disabled for this controller.
• Enabled: PHY fault isolation is enabled.
• Disabled: PHY fault isolation is disabled.
Controller Redundancy Mode
Shows the system’s operating mode, also called the cache redundancy mode:
• Independent Cache Performance Mode: For a dual-controller system, controller failover is
disabled and data in a controller’s write-back cache is not mirrored to the partner controller. This
improves write performance at the risk of losing unwritten data if a controller failure occurs while there is
data in controller cache
• 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.
Alphabetical list of commands
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