Dell iDRAC Telemetry Reference Guide

Historical Temperature Sensor Reports

The Historical Temperature Sensor Reports feature allows users to access sensor data for diagnostic purposes.

iDRAC Telemetry sends time series sensors, performance, and other data to the clients who subscribed to the data, or when the data is requested. This data is in the form of reports in JSON format which has a limited size and a time period (up to 2 hours). The historical data is not maintained on iDRAC, and users are responsible for storing the large historical data for analytical and diagnostic purposes. The data is not stored on iDRAC persistently.

This feature addresses the specific needs of making the historical sensor data available for approximately 1 month for diagnostics purposes. Clients like SupportAssist collectors can get that data from iDRAC to help diagnose problems that are related to server components. This is achieved by storing the time series data, already being collected as part of Telemetry streaming, persistently on eMMC in an efficient fashion so that it takes less space and causes less wear to eMMC and is conveniently accessible by the users.

The historical temperature sensor data can be accessed using the Redfish API or through SupportAssist Collector.