225012-B21 is an HP/Compaq Hot-Plug Redundant Fan Option Kit designed for the ProLiant DL380 Generation 2 (G2) server. The kit contains three hot-plug 60mm fans, providing redundant cooling and allowing fan replacement while the server remains operational. HP QuickSpecs explicitly identify 225012-B21 as the DL380 G2 Hot Plug Redundant Fan Option Kit and confirm that each kit contains three fans.
- Part Number: 225012-B21
- Manufacturer: HP / Compaq
- Product: Hot-Plug Redundant Fan Option Kit
- Quantity: 3 fans per kit
- Fan Size: 60mm
- Airflow: Approximately 30 CFM per fan
- Hot-Plug Support: Yes
- Cooling Function: Redundant server chassis cooling
- Application: Additional/redundant cooling for enterprise server operation
- Compatible System: HP/Compaq ProLiant DL380 G2
- Included: 3 × hot-plug redundant fan assemblies
- Related Spare: 228513-001 — DL380 G2 60mm hot-plug fan
- Compatibility Note: The DL380 G2 fan kit is generation-specific; HP community documentation notes that the DL380 G2 and G3 redundant fan assemblies are not interchangeable.