Why Blanking Panels Are Crucial for Server Racks & Data Centers?

For modern data centers and server racks, using blanking panels is a cost-effective solution to manage airflow and improve system efficiency. This article details why blanking panels are essential for server racks and data centers, and how they can help your project achieve more reliable and energy-efficient operations.

What are Blanking Panels?

Blanking panels (also called filler panels) are simple components that are applied in server racks to cover unused rack units (U spaces). Blanking panels are typically 1U or 2U in size and are compatible with most 19-inch server racks. They are typically installed in empty slots between devices. This guarantees the airflow through equipment rather than around it.

Different Types of Blanking Panels

Plastic vs Metal Blanking Panels

Plastic panels (ABS) are lighter, less expensive, insulated, and easy to install. And, you can quickly make adjustments or modifications to the plastic panels. They are suitable for regular server cabinets, small and medium-sized data centers.

Metal blanking panels (steel/aluminum) are stronger and more durable. They have better fire resistance. It is more suitable for industrial or high-density deployment environments.

Tool-free vs Screw-Mounted Blanking Panels

Tool-free blanking panel uses clips for quick installation and disassembly. You can apply it to dynamic data centers that change frequently. It can reduce your time and labor costs.

The screw-blanking panel is a traditional panel secured with screws. It is more secure and stable. You can apply it in high-security environments and long-term infrastructure.

Besides the above types, there are solid and ventilated blanking panels, brush panels, and modular panels. You can choose the right type of blanking panel for your rack or data center.

Key Benefits of Using Blanking Panels in Server Racks & Data Centers

Cooling & Energy Efficiency

Better Cooling Efficiency

The blanking panel prevents cold air from bypassing the device through empty rack spaces. It guarantees that cold air passes through servers and network devices to reach locations that require cooling. This can improve overall cooling efficiency.

Energy Cost Savings

Blanking panels reduce unnecessary operation or fan cycling of your cooling equipment by managing airflow to keep a steady airflow. The improved cooling efficiency reduces power consumption and overall operating expenses. In a data center, even small airflow improvements can help you save costs at scale.

Lower PUE (Power Usage Effectiveness)

By optimizing airflow and reducing cooling requirements, blanking panels reduce the cooling load of your data center/rack. Improved cooling efficiency reduces total energy usage. Therefore, the overall PUE is improved.

Enhanced Reliability & Protection

Eliminate Hot Spots

When a rack has open U spaces, airflow usually flows along the easiest path. Airflow naturally takes the path of least resistance, flowing through larger openings rather than narrow equipment channels. This also makes it easy to create hot spots.

Using blanking panels can help you block air recirculation and keep a consistent device temperature. Therefore, using blanking panels can also reduce the chance of hardware stress and failure.

Reducing Dust and Debris

Using blanking panels in your data center prevents dust and particles from being carried by uncontrolled airflow. Reducing dust ingress into the internal racks can reduce equipment failure rates. What’s more, it is also possible to prevent tools, cables, etc. from falling into the inside of the running equipment and causing short circuits.

The rear of the open rack is often exposed. Therefore,  using blanking panels also avoids maintenance personnel accidentally touching cables or electrical outlets in empty areas.

Improved Equipment Reliability

Applying blanking panels to your server rack, which improves airflow and reduces heat buildup. In addition, this helps prevent overheating and reduces thermal cycling stress. And, it can also extend the lifespan of servers and components.

For your data center operations, it reduces downtime and reduces failure rates. And reduce your equipment replacement costs.

Improve Aesthetics & Maintenance

The open space in the rack often exposes many unused areas, cables, and other clutter. This not only looks messy but also affects maintenance efficiency.

Blanking panels can help you cover the cables and empty U slots. This keeps your server rack/data center professional and tidy. And, it can also assist cable management and improve your operating efficiency.

What Happens Without Blanking Panels?

Inefficient Airflow and Wasted Cooling

An empty U slot in the rack provides an open path for airflow. Cold air bypasses IT equipment and cannot reach important components. This causes uncontrolled airflow (mixing of hot and cold air) and inefficient cooling. Your cooling equipment cannot provide you with better cooling effects in this situation.

Hotspots and Uneven Temperature Distribution

Uneven airflow can cause localized areas inside your rack to become too hot. Devices with uneven temperatures can create hot spots. Hot spots may cause system alarms or system downtime.

Reduced Equipment Lifespan

Temperature fluctuations/excessive heat can stress your IT hardware. This increases wear between components. And, your IT hardware life will also be shortened. The failure rate/downtime of the equipment will also become higher.

Higher Cooling Cost

Insufficient cooling efficiency increases the load on your cooling system. Your energy consumption and operating costs both increase accordingly. However, higher operating costs come with greater risks.

How to Choose the Right Blanking Panels for Your Server Rack/Data Center?

Rack Size and Compatibility

The blanking panel needs to be compatible with your rack. Typically, standard rack positions are 19 inches. You can choose the proper blanking panel height based on your rack. For example, 1U, 2U, and 4U. Before choosing, you need to measure the available space. The right size will effectively seal airflow gaps.

Choose the Right Type

You also need to choose the right panel type based on your airflow strategy. Solid panels are a good choice for most data centers. They can completely block the airflow gap, which is beneficial to the cooling efficiency. Also, depending on your cost, you can choose metal/plastic blanking panel material. Plastic blanking panels are lightweight, affordable, and suitable for most environments.

Consider Your Maintenance Requirements

Does your rack need to change layout frequently? Do you need quick access? If you do, modular blanking panels make it easier for you to make changes.

Fire Safety and Standard Requirements

Some data centers/server racks require higher security standards. Therefore, your blanking panels should be fireproof and follow local industry regulations.

よくある質問

Are Tool-Less Blanking Panels Better than Screw-Mounted Ones?

This depends on your specific use situation. Tool-less blanking panels make it easy for you to install and remove. You can apply them to racks that are frequently changed or used in stages. This can help you save a lot of time and manpower. Screw-mounted blanking panels are more secure and stable, suitable for fixed installation and high vibration environments.

Are Blanking Panels Worth Investing In?

Yes. The blanking panel is a low-cost but high-efficiency component. It substantially improves cooling efficiency and saves energy. By sealing the empty space in the rack, it avoids airflow leakage and hot air circulation. Therefore, it also reduces the cooling load and operating costs.

Are Blanking Panels Required for Hot Aisle/Cold Aisle Containment?

Hot aisle/cold aisle containment is not strictly required. Strictly speaking, blanking panels are not a replacement for hot aisle/cold aisle containment. However, they are highly recommended even when containment is in place. Because they prevent air bypass within the rack itself, and improve the overall effectiveness of the containment system.

Hot aisle/cold aisle containment separates hot air from cold air. This prevents hot and cold air from mixing, which also prevents reduction in containment efficiency.

Can Missing Blanking Panels Cause Equipment Failure?

Yes. The lack of blanking panels can indirectly cause your device to fail. Without blanking panels, the device generates hot exhaust air that recirculates to the front intake of the rack. The device‘s inlet temperature exceeds the safe range. This can cause server and components overheating, thermal throttling, etc. The potential of unexpected shutdowns or failures also increases.

Can Blanking Panels Be Used with All Types of Server Racks?

Yes. Blanking panels can be used with most server racks. But you should check their compatibility. Most data center and IT environments have racks that are standard 19-inch. Blanking panels are designed specifically for such racks.

Can I Install Blanking Panels Without Turning Off Equipment?

Yes. You can install blanking panels without shutting down the device. Blanking panels are typically installed in empty rack space rather than on running equipment. Also, no electrical connection is required to install blanking panels. Blanking panels have no direct contact with the running device.

Final Thought

KDM is a customized electrical enclosure manufacturer with years of manufacturing experience. We provide you with 電気筐体 in many materials, sizes, installation methods and compatible blanking panels. If you need, our professional team will provide you with customized solutions. Looking forward to serving you.