HPE ProLiant DL380 Gen11 Standard Fan Kit (P49146-B21)
The HPE ProLiant DL380 Gen11 Standard Fan Kit (P49146-B21) is a genuine factory hardware cooling solution engineered explicitly to maintain stable thermal metrics within HPE ProLiant DL380 Gen11 2U rack servers. In server environments, constant positive airflow is critical to prevent component degradation. This official option kit supplies the necessary cooling reinforcement required when expanding standard base server architectures, populating secondary processors, or replacing worn-out internal chassis fans.
The P49146-B21 option kit consists of two (2) hot-plug 60mm system fans featuring easy-to-identify blue touchpoints. It is designed specifically for standard compute deployments featuring processors with lower Thermal Design Power (TDP) thresholds—typically 205W and below (such as the Intel® Xeon® Silver or lower-tier Gold series). These fans hook directly into the server’s modular cooling bulkhead, communicating speed metrics natively to the integrated management processor to balance cooling capacity with data center power efficiency.
HPE ProLiant DL380 Gen11 Standard Fan Kit (P49146-B21) Key Features & Product Highlights
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Dual-Fan Expansion Array: Ships as a comprehensive kit containing 2 premium 60mm dual-rotor hot-plug fans to immediately augment your server’s cooling baseline.
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Seamless Hot-Plug Support: Outfitted with specialized toolless structural frames, allowing administrators to swap out a faulty fan cage instantly without powering down live workloads.
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Optimized for Standard TDP Builds: Engineered to provide efficient, reliable thermal regulation for 4th and 5th Gen Intel Xeon Scalable processors rated up to 205W TDP.
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HPE iLO 6 Advanced Telemetry: Fully integrates with the server’s onboard management system, allowing the chassis to dynamically throttle fan RPMs based on ambient room conditions and live component heat sensors.
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Airflow Pathway Support: Maintains optimal high-velocity air velocity across nearby components, lowering thermal pocket hazards surrounding enterprise DDR5 memory channels and OCP slots.
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Toolless Installation Layout: Features intuitive blue mechanical handles, making installation into the server’s central fan partition completely tool-free.
HPE ProLiant DL380 Gen11 Standard Fan Kit (P49146-B21) Technical Specifications
| Feature | Specification Details |
| Model SKU / Factory Option Part | HPE ProLiant DL380 Gen11 Standard Fan Kit (P49146-B21) |
| Spare Part Number Identification | 49959-001 / P47685-001 |
| Product Component Type | Internal Server Chassis Cooling Fan Module Kit |
| Total Included Fans | 2x Independent Dual-Rotor Hot-Plug Fans |
| Fan Dimension Category | 60 mm Industry Standard Chassis Profile |
| Processor Thermal Baseline Compatibility | Tailored for CPUs with a TDP up to 205 Watts |
| Retention Mechanism Handling | Hot-Swappable / Toolless Latching (Blue Touchpoints) |
| Server Hardware Bracket Gen | Explicitly designed for HPE ProLiant Gen11 Architecture |
| Primary Platform Compatibility | HPE ProLiant DL380 Gen11 |
| Packaged Net Weight | Approximately 570 grams (1.25 lbs) |
HPE ProLiant DL380 Gen11 Standard Fan Kit (P49146-B21) Pros & Cons
Pros
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Zero Workload Disruption: Hot-swappable structural design allows fan maintenance to occur under full production runtimes without causing server downtime.
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Intelligent Power Management: Operates under pulse-width modulation (PWM) control, matching fan speeds to the actual heat output to reduce waste power draw.
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True Factory Compatibility Calibration: Built as an authentic HPE option, eliminating firmware communication bugs or false “Fan Failure” warning logs on the system dashboard.
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Cost-Efficient Entry Thermal Kit: Provides an affordable alternative for standard compute nodes that do not require high-cost, high-decibel high-performance fan modifications.
Cons
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Strict Operational Restrictions: Restricted to processors running below 205W TDP. High-density server builds containing processors over 205W, mid-tray drive cages, graphic accelerators, or premium NVMe arrays must utilize the HPE High-Performance Fan Kit (P48820-B21) instead.
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Chassis Model Exclusivity: Sized and pinned exclusively for the 2U ProLiant DL380 Gen11 chassis layout. It will not physically sit or link inside alternative models or legacy Gen10 layouts.
HPE ProLiant DL380 Gen11 Standard Fan Kit (P49146-B21) Suitable Application Areas
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Secondary Processor Enablement: A mandatory component requirement when upgrading a factory base single-CPU server to a dual-socket layout using standard-tier processors.
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Redundant Fan Array Safety: Ideal for populating empty fan partition slots to satisfy N+1 cooling redundancy requirements, protecting the node if a primary fan breaks down.
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Standard Business Infrastructure Deployments: Perfectly matched for standard ProLiant nodes running low-density arrays like active directories, domain controllers, and backup endpoints across Kenya.
Cooling Solution Comparison Table (HPE Gen11 2U)
| Cooling Option SKU | Fan Tier Class | Targeted Processor TDP | Primary System Components | Intended Application Match | Estimated Price Range (KSh) |
| HPE Standard Kit (P49146-B21) | Standard Base Fan | Up to 205 Watts | Standard LFF/SFF Cages | Intel Xeon Silver / Entry Gold Upgrades | KSh 16,500 – KSh 22,000 |
| HPE High-Performance Kit (P48820-B21) | High-Performance Fan | 205W to 350W+ | GPUs, NVMe Drives, Rear Bays | High-End Gold & Platinum Clusters | KSh 26,000 – KSh 34,000 |
Verdict
The HPE ProLiant DL380 Gen11 Standard Fan Kit (P49146-B21) is a vital, cost-effective requirement to ensure foundational hardware reliability. By providing two genuine hot-plug 60mm system fans designed to easily tame configurations running processors under 205W TDP, it builds a solid defense against thermal choking and component failure. For network coordinators, IT procurers, and infrastructure engineers across Kenya expanding their standard ProLiant Gen11 arrays, installing this certified fan kit is a necessary step to keep compute lanes stable, cool, and running efficiently.







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