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Determine the form factor or the combination of form factors that work best for your environment. Having empty rack space can lend itself to more of a 1U or 2U deployment. However, if your rack enclosures are packed, you can go the more traditional route with 0U vertical rackmount PDUs in the back. ​
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1U horizontal rack PDU

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2U horizontal rack PDU

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0U vertical rack PDU

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Whether it’s a metered PDU or a managed PDU (otherwise known as a switched PDU), you’ll need to determine what level of control your infrastructure power requires. Metered input PDUs offer branch-level metering, while metered outlet PDUs provide metering at individual outlets for billing-grade accuracy. For the most advanced capabilities, choose managed PDU technology that provides outlet-level switching (i.e. you can turn an individual outlet off and on remotely) and outlet-level monitoring, both of which help reinforce uptime for critical loads.

Look for models that include network connectivity, push button controls and a display screen. 

Eaton G4 Rack PDU EVMA1530X Right Top View v2
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Having enough electrical power to adequately supply your data center deployment is a big deal. When selecting an input cord and plug, research the amount of power it provides to the rack PDU along with the total power consumption of your IT equipment.

Don't forget to plan for growth and expansion. If you think your data center will grow, be sure that you’re considering power distribution to avoid designing yourself into a corner. ​

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The type of outlets and overall quantity you select are important. More than making sure all your plugs have the right receptacle, having the proper balance of C13 (15 amps) and the higher power C19 (20 amps) outlet types ensures that there is enough power for all your connected devices. Newer PDU models may feature hybrid outlets that accommodate more than one type of plug. Consider combo outlets for more variable rack configurations.
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Introducing Eaton's C39 outlet

Eaton has created the new C39 outlet to account for your changing power distribution needs. Able to accommodate a C14 or a C20 plug, this new PDU receptacle means you don't have to change your rack PDU every time your connected equipment changes.
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Depending on the temperature of your data center, having a rack PDU with a high operating temperature capability can keep your PDUs and connected devices operating at full functionality. PDUs with higher operating temperatures—such as those rated for 140°F (60°C)—also reduce cooling costs. 
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If you’ve ever had to configure IT equipment in the back of a dark cabinet, you’ll know that the right color can enhance visual idenification. You can take advantage of various rack PDU colors, labelling and cabling to clearly identify which PDU is your A side and which one is your B side.

Eaton's High Density rack PDU offers a full range of colors—including purple, brown, yellow, blue, white, green, and many others— to make organizing and styling your server racks easy. 

HD PDU IEC and NEMA outlets
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Find the right rack PDU for your IT needs

Specify basic, metered input, metered outlet or managed PDUs, also known as switched PDUs, in addition to several other key features.
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Before selecting a rackmount PDU, you should consider weight and mounting capabilities. Look for options such as tool-less mounting, low profile form factors and a light-weight aluminum chassis to ease your deployment woes. In some installations, a PDU with end-entry input can offer more flexibility and room to maneuver than those with front-entry input.

Watch this video on Eaton's tool-less PDU installation.

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Avoiding accidental disruptions and keeping unauthorized users out are keys to maintaining a safe data center environment. Look for rackmount PDUs that enable you to turn off unused outlets with outlet switching technology to control unauthorized use. Also, take advantage of integrated IEC outlet grips to prevent accidental disconnects that are typically caused by human error or over time by vibrating equipment.
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How will you manage your rack PDUs remotely, with multiple rows of equipment and/or multiple sites? Software solutions like Eaton's Distributed IT Performance Management software (DITPM), part of the Brightlayer Data Centers suite, provide deep intelligence into your network connected PDUs, enabling you to remotely manage and control your equipment, and identify and fix issues before your equipment goes down.
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If you work in a data center, you’re probably already aware that power distribution units (PDUs) are more than just power strips. With rack PDUs numbering in the hundreds or even thousands, having the right PDU can be critical for managing your data center effectively. Let’s take a look at some key considerations when purchasing a rackmount PDU for your data center.