---
type: Monitoring Guide
title: "SNMP Hardware Monitoring: Temperature, Fans, Power & RAID"
description: "Monitor server and appliance hardware with SNMP — temperature, fan speed, power, voltage and RAID — using the ENTITY-SENSOR-MIB and vendor MIBs."
resource: "https://snmp-monitoring.info/monitoring/hardware/"
tags: [monitoring]
timestamp: 2026-07-11T00:00:00Z
---

# SNMP Hardware Monitoring: Temperature, Fans, Power & RAID

Monitor server and appliance hardware with SNMP — temperature, fan speed, power, voltage and RAID — using the ENTITY-SENSOR-MIB and vendor MIBs.

## Related concepts

- Up: [SNMP Monitoring: The Complete How-To Guide](/monitoring/index.md)
- [How to Monitor Fan Speed (RPM) via SNMP](/monitoring/hardware/fan-speed/index.md)
- [How to Monitor Power Supply (PSU) Health via SNMP](/monitoring/hardware/power-supply/index.md)
- [How to Monitor RAID Array Status via SNMP](/monitoring/hardware/raid/index.md)
- [How to Monitor Temperature via SNMP (Servers & Network Gear)](/monitoring/hardware/temperature/index.md)
- [How to Monitor Voltage via SNMP (Rails & Sensors)](/monitoring/hardware/voltage/index.md)

## Frequently asked questions

### Can SNMP monitor hardware temperature?

Yes. The ENTITY-SENSOR-MIB (1.3.6.1.2.1.99) reports temperature sensors typed as celsius, and most server and network gear also exposes temperature through a vendor enterprise MIB under 1.3.6.1.4.1. Walk the sensor table and read entPhySensorValue against its type and scale.

### What MIB has hardware sensors?

The standard one is the ENTITY-SENSOR-MIB (RFC 3433) at 1.3.6.1.2.1.99, which types every sensor (celsius, rpm, volts, watts, percentRH…) generically. Vendors add richer trees under their enterprise arc — HP iLO, Dell iDRAC, Supermicro and others.

### Should I use SNMP or IPMI for hardware?

Use SNMP when you want one protocol across a mixed fleet and the host is up. Use IPMI/Redfish when you need deep, board-level detail on a single server or out-of-band access with the OS down. They complement each other — see SNMP vs IPMI.

### Does SNMP read fan speed?

Yes. Fans appear in the ENTITY-SENSOR-MIB typed as rpm, and vendor MIBs expose them too. A fan whose RPM drops toward zero is an early warning of an imminent thermal problem, so it's worth alerting on a floor, not just a failure state.

## Source

Concept generated from https://snmp-monitoring.info/monitoring/hardware/ — the SNMP Monitoring vendor-neutral knowledge base. Content is limited to what that page states (no external claims added here).