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HDOT Family Welcomes Per Outlet Power Sensing PDUs

Posted by RJ Tee on Jan 17, 2018 7:25:00 AM


Originally posted Mar 28, 2017, updated Jan 16, 2018

Just in case you didn't know, our award winning HDOT PDUs contain embedded Per Outlet Power Sensing (POPS) with device-level power monitoring, making this the most innovative product line yet.

Every data center should seriously consider using HDOT PDUs — with +/- 1 percent billable-grade accuracy — to drive efficiencies, maximize uptime and slash operating costs.

So, what makes POPS so remarkable?

Data center operators can use this feature to measure voltage, current, apparent power, active power, crest favor and power factor at the outlet level. Plus, warnings and alarms can be set up to monitor current, power, and power factor for both low and high values. This can help to reduce power faults, resulting in a safer and more effective data center.

Of course, customers who are familiar with the rest of the HDOT product line will find all of the same great features in this product. HDOT PDUs still come with full switching capabilities (for remote power toggling), alternating power distribution (for distributing power on a per-receptacle basis) and PRO2 architecture (our proprietary hardware and firmware platform offering modern security protocols, Zero Touch Provisioning, and advanced protection for ensuring system reliability and uptime.

Learn how to get the most out of your HDOT Alt-Phase PRO2 Switched POPS PDU

PDU in this white paper.

One of the great parts about this product line, it should be noted, is that it’s fully-customizable. Server Technology offers a special Build-Your-Own PDU feature, with an updated — and simplified — four step configuration process. 

Implementing POPS into the HDOT PDU product line was a true engineering feat, and it’s something that everyone should experience.

Build Your Own HDOT PDU

Topics: HDOT, Per Outlet Power Sensing, POPs, HDOT Switched POPS, BYOPDU


Posted by RJ Tee on Dec 27, 2017 2:48:35 PM


In our last blog post titled BYOPDU 101, we spent some time discussing the differences between five different types of rack mount PDUs manufactured by Server Technology. In this lesson, class, we are going to help you take that knowledge and build your own HDOT PDU.

Believe it or not, it is a simple four-step process to custom build a PDU tailored specifically to your needs, your load, and your management style.

Step one. With your chosen combination of features in mind (Metered, Smart, Switched, POPS), you will need to decide if you need an alternating phase power strip, or a standard unit. (Need help deciding which family of rack PDUs to build?  Our buying guide is a good place to start.)  If you were heading down the alternating phase route, you will also need to determine the number of outlets you need. The choice here is either between 24 and 42 outlets, or 48 and 54 outlets. Once you do decide which category you fall into, simply click the orange button to select the type of unit you would like.

BYOPDU configurator step one, selecting PDU typeStep One - 48-54 outlet Switched POPS PDU is selected in screenshot


Step two. Believe it or not, the hard part is over. The next step is to determine the power options that will define the way your rack mounted PDU will be constructed. The online tool provides options for voltage, amperage, and phase type. Simply locate the orange button that it meets your specifications, and you will quickly find yourself at the next step.


Step Two - 240/415 Volts; 20-30 Amps; 3-Phase L-N is selected in screenshot


Step three. This is the part where things get pretty fun. The next step is to choose plug and outlet types for your power strip. Once you get to this stage, there is a graphic interface that shows the HDOT PDU you are building. You will use your mouse to identify the plug count, type, and configuration for the business side of the PDU. You will also use your mouse to select where the cord will enter the rack, and the type of plug required for your application. Once these selections have been made, you will see your power strip on the screen exactly as it has been configured.

Step-03.jpgStep Three - Choose outlet and plug modules


Step four. At this point the PDU is essentially built, albeit with a few details left. The fourth step in the tool allows you to provide information such as color, quantity, and configuration options particular to the type of unit you selected. We also provide you a link to download a spec sheet for the particular unit that you built and, of course, the ability to get pricing based on your specifications and the quantities needed.

Step-04.jpgStep Four - Select color, quantity, and view config details.


If for some reason you get stuck along the way, the designers at Server Technology have placed a clever “Help me choose” button at each step of the build process. Push this button to get clarification or information on the options that are presented to you.

That’s it. Class is dismissed. Before you head out the door, be sure to note the homework assignment and head to Build Your Own HDOT PDU to practice putting your knowledge to work for you and your data center.

Build Your Own HDOT PDU



Posted by RJ Tee on Dec 20, 2017 12:01:30 PM


Did you know that Server Technology allows, and even encourages, its customers to build their own PDUs? Now, to be clear, we are the ones who actually build the PDUs, but we do feel strongly that you should have control over that process. We let you do this through a web tool we call “Build Your Own HDOT PDU.”

The first step in building your own PDU is to figure out what you want, right?


Well, not so fast. Since there are five product types to choose from, the first step is to decide which one best suits your needs. We’d like to take a minute to go over the options.

Metered. The most basic form of rack mount power strip, that you can configure, is what we call Metered. The Metered unit will provide information on input current via a display on the PDU. This is helpful for preventing overloads and simplifying the process of balancing three-phase loads. This is the best choice for those who want to keep it simple and are not interested in getting rack level data and control via their PDU.

Smart. If you would like to have this information delivered to you in order to make the job of managing the power strip a little easier and less manual, the next step is to look at the Smart series. Our Smart rack-mount PDUs include the features of Metered power strips, and they provide these input power measurements to you via your network or a serial connection. They can be also configured to send email alerts about different power and environmental conditions. As the name Smart implies, this is the first step toward rack-based power intelligence.

Smart POPS. If you’re the type that takes it to the next level, then Smart POPS is for you. The acronym POPS stands for “per outlet power sensing,” and Smart POPS PDUs provide accurate power monitoring at the outlet level along with all of the features that you would find in a Smart PDU. In the world of monitoring what’s going on inside your rack, this is the entry-level way to obtain outlet by outlet electrical monitoring.

Switched. Depending on your operation, it might make sense for you to have the ability to turn on, turn off, or reboot outlets either individually or as a group. If you have these types of control needs, then the Switched unit is the one for you. Switched provides the same features as a Smart POPS along with the ability to control the unit, lockout certain outlets, and control power sequencing to reduce inrush and increase your ability to shed load in a logical fashion.

Switched POPS. If you were thinking, “well, I’d love to have everything that you’ve mentioned,” then there is one last option for you to consider. All of the smart, switched, and POPS features are combined into a product we call Switched POPS. This unit combines all of the features into one feature-rich PDU. In fact, it is the most sophisticated power distribution unit on the market today.

Want to see a Switched POPS PDU in action?  View our online demo.


While this is a lot to think about, identifying how you engage, control, and manage your rack-level electrical loads is the best and first step in the process of building your own HDOT PDU. We will return next week with the rest of the lesson to help you get your units into production.

If you can’t wait, please visit our Build Your Own HDOT PDU tool on the Server Technology website. Roll up your sleeves, and let the PDU building begin.


Topics: HDOT, build your own PDU, BYOPDU

What’s the Best PDU Solution?

Posted by RJ Tee on Dec 15, 2017 6:02:00 AM

rack mount pdus - click to get to rack PDU buying guide and wizard

We get this question all the time. I mean literally, all the time.

But it is easy to understand why. Amanda Senger, one of Server Technology’s storied Sales Engineers, summed it up perfectly. “We’re really good at one thing: PDUs. We have over 2,000 different part numbers, where our competitors only have 100-200, so we have a lot more flexibility we can offer our customers.”

Thanks, Amanda. Nailed it. So, what is the best PDU solution? Answer: the PDU that you just specified and ordered.

There are a lot of best PDUs, then, and that is the point. The goal of our product line and the design of our manufacturing process is to allow our customers the ability to find exactly the right set of power distribution features for their application. Why else would Server Technology provide so many options, from horizontal to vertical, 120V to 415V, low density to high, and from managed to not? It is because every data center rack is its own unique deployment, which demands the ultimate in flexibility from those devices that power the load.

In other words, ain’t no two power distribution units alike.

Now, freedom of choice can be a good thing, but it can also be overwhelming by virtue of the number of options it presents to the consumer. We get that. Before we developed our ‘Pick Your PDU Wizard,’ we’re sure we were partially responsible for a near-constant state of confusion found among a certain generation of data center managers. You know who you are.

But to find your way, there are just a handful of basic questions that need to be answered:

  • Do you need outlet level monitoring?
  • Do you need individual outlet control?
  • How will the unit be mounted?
  • How many outlets are needed?
  • What will the nominal voltage and input current be?
  • Single or three-phase?
  • What is your plug type?
  • What kind of monitoring do you need?

See? That wasn’t so tough.

Our PDU configuration tool is one way that we make sure that you stay powered and get ahead. Server Technology, now a part of the Legrand family of companies, is proud to be your Power Strategy Expert.

Click to try our PDU selection wizard

Topics: BYOPDU, PDU Wizard

May the POPS Be with You

Posted by RJ Tee on Dec 13, 2017 12:28:27 PM

data center racks in space

Since much of the buzz this week will be about the much-anticipated release of Star Wars ‘The Last Jedi’ on Friday (or Thursday if you happen to live in the UK), we thought we would take a moment to share some of our favorite old lines.

And now, from a galaxy far, far away… (cue fanfare)

“The force is strong in this one.” Bad guy or not, Darth Vader hit the nail on the head here. While we had to wait until much later to find out why he knew what he knew, we do know now that sometimes you just have a feeling about things. The Server Tech team had that same good feeling when we started talking about ZTP, our zero-touch provisioning approach for our PDU line. (We even have a pretty nifty whitepaper...)  A way to provision all your rack mounted power strips at once, hands-free, and outside of the data center? We still have to remind people this is no Jedi mind trick.

PDU Jedi Mind Trick


“I find your lack of faith disturbing.” Suffice it to say, this understated line is one that you never want on the receiving end -- just ask the unfortunate Imperial officer Admiral Motti. You also don’t want to find yourself on the short end of a PDU specification for your data center. To keep you out of hot water and to loosen that nagging grip, we have developed the Build Your Own PDU tool. Faster than the Millennium Falcon’s twelve parsec Kessel run, you can specify and order a power distribution unit that will meet just about – uh – anyone’s exacting specifications.

“Do. Or do not. There is no try.” This could will be the motto for our research and development department. They have developed an industry-leading number of patents for technology developed specifically for rack-mounted PDUs. All of these variations are the result of demand from the market and the willingness of our team to make that happen. We appreciate Yoda’s maxim and have tried to embody his wisdom. Our R&D team does.

“Traveling through hyperspace ain’t like dusting crops, farm boy.” Well, Han Solo, we could also argue that the jump to hyperscale computing is not for the faint of heart either. That being said, our high-density solutions such as HDOT have found a place in the mission-critical space, and we dare say they helped propel the move to more sophisticated computing. We are here to make sure those Star Destroyers don’t damage your hyperdrive so you, too, can make the jump like a pro. Or a washed-up smuggler.

“Judge me by my size, do you?” Yoda will go down in movie history as the ultimate ‘don’t judge a book by its cover’ character, and we feel that our horizontal power distribution units could easily fall within the same category. Small but mighty, our horizontal units can also pack a punch. With more configuration options than a swamp full of womprats, they are a sometimes-forgotten (but never cloned) weapon in the arsenal of the power-distribution wars.

You see, the force is strong here at Server Technology. Like Jango Fett, we’re just a simple company trying to make its way in the universe. May the force be with you.

Click to try our PDU selection wizard

Topics: HDOT, density, ZTP, BYOPDU

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