Chassis Alarms

Hardware alarms are generated on the DSC 8000 chassis to indicate the status of system components. System components include the chassis, Fan Trays, and Power Supplies.

The alarms are accessed from the alarm dashboard in the Web UI. The alarm dashboard provides an indication of system status by showing the number of critical, major, and minor alarms that are generated by system events. Individual alarms that appear in the dashboard are accessed to determine the origin of the alarm. To access the alarms, see section Alarm Dashboard Web User Interface in the Alarms Guide. To view details of individual alarms, see section View Alarms.

The hardware alarms are generated by hardware sensors monitoring system components in the chassis. There are two types of hardware sensors on the DSC 8000:

• Threshold sensors
• Discrete sensors

Threshold sensors and the corresponding SNMP threshold alarms are described in the following sections:

Chassis Threshold Sensors and Alarms

SNMP Threshold Alarms

Discrete sensors and the corresponding SNMP alarms are described in the following sections:

Chassis Discrete Sensors and Alarms

SNMP Discrete Alarms

Chassis Threshold Sensors and Alarms

All threshold sensors available on DSC 8000 cooling units and power modules generate alarms. An alarm is generated by a threshold sensor event. Threshold sensor events consist of voltage or temperature values crossing a pre-defined threshold level.

The following table describes the threshold hardware sensors available on the DSC 8000 chassis.

Threshold Sensor Events

Threshold sensor event severity levels are defined as follows:

• Noncritical: This is a warning that one or more operating specifications are somewhat out of normal range, but there is not yet a problem to be addressed. Noncritical events are for information only, and they do not indicate that the DSC 8000 chassis is outside of operating limits. In general, no action is required. However, in certain contexts, system/shelf management software may initiate preventive action. For example, if several cards in a shelf report upper noncritical temperature events, the shelf manager may decide to increase fan speed.
  
  
• Critical: The DSC 8000 chassis is operating within specified tolerances, but one or more specifications are getting close to the critical thresholds. Critical events indicate that the card is still within its operating limits, but it is close to exceeding one of those limits. Possible action in this case is to closely monitor the alarming sensor and take more aggressive action if it approaches the nonrecoverable threshold.
  
  
• Nonrecoverable: The DSC 8000 chassis is no longer operating within specified tolerances. Nonrecoverable events indicate that the card may no longer be functioning because it is now outside of its operating limits. Action is likely required or has already been taken by the local hardware/firmware. For example, a processor may shut itself down because its maximum die temperature was exceeded, or a shelf manager may deactivate the card because the processor is too hot.

Chassis Voltage Sensor Threshold Levels

The following Table shows the voltage threshold levels for the voltage sensors on the DSC 8000 chassis. The threshold sensors trigger an SNMP alarm when a pre-defined sensor threshold level is crossed.

SNMP Threshold Sensor Alarms

This section describes the SNMP alarms generated by threshold sensor events on the DSC 8000 chassis.

The following SNMP alarms are registered when a threshold sensor event occurs on the DSC 8000 chassis.

Chassis Component FRU Data Records

DSC 8000 chassis system components include fan trays and power supplies. System components are monitored by the AMC671 (MCH) cards located in the same chassis. Each power supply and fan tray has a unique ID in the chassis. An FRU data record is available for system components managed by the MCH card. 

FRU data records contain information on manufacturing data associated with each component, including:

• Manufacturing date
• Serial number
• Product part number

To access a system component FRU data record, access the Web UI and select the Hardware Monitor application (hwmon) from the System menu. The MCH slots in the chassis are presented. Click on one of the MCH slots to access FRU data on system components managed by the selected MCH card. FRU data records for power supplies are listed in the table, 'Power Supply Selection'. FRU data records for fan trays are listed in the table, 'Fan Tray Selection'.

The following table describes each FRU data record available on the DSC 8000 chassis.

Chassis Discrete Sensors and Alarms

Cooling units and power modules are defined as system components in the DSC 8000 chassis. An alarm is generated when a cooling unit or power module is inserted or extracted from the chassis.

The following Table describes the discrete hardware sensors on the DSC-8000 chassis. Discrete sensors return values of 'on' and 'off' or 'true' and 'false'. Each entity in the system has a 'Version Change' sensor that reports the entity's FRU state. These states are described in Intelligent Platform Management Interface Specification Second Generation (v2.0) specification.

SNMP Discrete Sensor Alarms

This section describes the SNMP alarms generated by discrete sensor events on the DSC 8000 chassis.

The following SNMP alarms are registered when a discrete sensor event occurs on the DSC 8000 chassis.