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IBM cooling module with dual 3.15 fans for 8721 chassis

IBM

IBM 43W9078 Cooling Module 2 x 3.15 for 8721 Chassis

SKU CH-06W4-383A3 MPN 43W9078

Dual 3.15 cooling module for the IBM 8721 Flex System Enterprise Chassis

  • TypeCooling Module
  • CompatibilityIBM 8721 Flex System Enterprise Chassis
  • Dual 3.15 fans deliver targeted airflow for dense chassis
  • Designed specifically for IBM 8721 Flex System Enterprise Chassis
  • Lenovo-built cooling module ensures OEM-grade reliability
  • Two-fan redundancy maintains thermal stability under load
  • New condition guarantees full service life from installation

Purpose-built cooling for IBM 8721 Flex System

The IBM 43W9078 cooling module is engineered specifically for the 8721 Flex System Enterprise Chassis. It integrates dual 3.15 fans to deliver targeted airflow across high-density compute nodes. Data-centre operators and system integrators deploy it to maintain thermal stability in rack-mounted enterprise environments.

Dual-fan thermal management with low acoustic impact

Two 3.15 fans operate in concert to move air efficiently through the chassis without excessive noise. The module draws power directly from the chassis midplane, eliminating the need for separate cabling or external power supplies. Normal operation keeps inlet temperatures within specification while acoustic output remains suitable for raised-floor server rooms.

Direct replacement for failed

This unit replaces an original IBM cooling module when a fan fails or a slot is left empty after a configuration change. The upgrade is worth it when thermal alerts appear, when fans report degraded speed, or when populating a previously unused bay in an 8721 chassis. It is not for buyers who need cooling for non-IBM enclosures, for desktop workstations, or for chassis that accept a different form factor.

Highlights

  • Dual 3.15 fans deliver targeted airflow for dense chassis
  • Designed specifically for IBM 8721 Flex System Enterprise Chassis
  • Lenovo-built cooling module ensures OEM-grade reliability
  • Two-fan redundancy maintains thermal stability under load
  • New condition guarantees full service life from installation

Specifications

BrandLenovo
TypeCooling Module
CompatibilityIBM 8721 Flex System Enterprise Chassis
Shipping weight2.27 kg
Package size127 × 127 × 127 mm

Questions about this item

How do I install the 43W9078 cooling module into the 8721 chassis and which step is commonly missed?

Slide the module into the designated fan bay until the latch clicks; the step often missed is pressing the release lever fully down to lock it in place.

What maintenance will the dual 3.15 cooling module require over its service life?

Periodically vacuum dust from the fan blades and intake vents; no lubrication or user-serviceable parts are inside the sealed motor assembly.

Which thermal limit appears first when the 8721 chassis runs sustained workloads?

The chassis management controller will throttle compute nodes once inlet air temperature exceeds the platform threshold, protecting the 43W9078 fans from over-speed.

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