CLI Guide

● 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.
● 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.
Examples Show controller information.
# show controllers
Basetypes controllers status
See also
show configuration show frus
show controller-statistics
Description
Shows live performance statistics for controller modules. For controller performance statistics, the
system samples live data every 15 seconds.
Statistics shown only in API output are described in API basetype properties
Minimum role monitor
Syntax
show controller-statistics
[a|b|both]
Parameters
a|b|both
Optional. Specifies whether to show information for controller A, B, or both. If this parameter is
omitted, information is shown for both controllers
Output
Durable ID
The controller ID in the format controller_ID.
CPU Load
The percentage of time the CPU is busy, from 0 to 100.
Power On Time (Secs)
The number of seconds since the controller was restarted.
Bps
The data transfer rate, in bytes per second, calculated over the interval since these statistics were
last requested or reset. This value will be zero if it has not been requested or reset since a controller
restart.
IOPS
The input/output operations per second, calculated over the interval since these statistics were last
requested or reset. This value will be zero if it has not been requested or reset since a controller
restart.
Reads
Alphabetical list of commands 177