CLI Guide

show redundancy-mode
Description Shows the redundancy status of the system.
Minimum role monitor
Syntax
show redundancy-mode
Output
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.
● Down: Both controllers are not operational.
Controller Redundancy Status
● Redundant with independent cache: Both controllers are operational but are not
mirroring their cache metadata to each other.
● 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.
● Redundant: Both controllers are 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
Examples
Show the redundancy status of the system.
# show redundancy-mode
Basetypes
redundancy
status
232 Alphabetical list of commands