Limited Free Passes Available for DatacenterDynamics (DCD) DCD Washington taking place May 2nd

Posted on April 25, 2013 by Gento

Raritan has a limited number of complimentary passes available (for end users only) for the DCD Washington show taking place on May 2nd. Contact Dorothy.Ochs@Raritan.com.

We will also have live demos in our booth (#TCB) and a raffle drawing for an iPad mini. Hope you can join us.

For more details, visit http://www.datacenterdynamics.com/conferences/2013/washington-dc-2013

Join us for: "Benchmarking your Data Center"

Posted on April 25, 2013 by Gento

Key Note Speaker:


EDI, Ltd.‘s Jeremy Gilbertson, CTS, RCDD

Topics Covered:

  • Why Most Data Center Projects Fail Before They Begin. The importance of benchmarking and accurate statement of requirements
  • State of the Industry – Data Centers: Interesting, unique goings-on in the data center industry

Jeremy Gilbertson, CTS, RCDD is Vice President of EDI, Ltd.‘s Data Center Practice and is responsible for overall strategic direction, management, and project delivery for the practice. Jeremy’s expertise involves helping enterprise, third-party provider, healthcare, and higher-education clients understand the current state of their data centers and develop phased strategies that address business requirements, risk profile, and budget.

Join us for an afternoon of leading edge Data Center discussions and real world case studies ranging from design through intelligent infrastructure management followed by a tasting of best brews and appetizers.




Thursday, May 23rd from 12:00pm-5:00pm




Gordon Biersch Brewery (Buckhead location)

3242 Peachtree Road N

Atlanta GA 30305


Case Studies on Tap:

  • Raritan: Deploying High Power at the Rack
  • Fluke Networks: Ensuring Performance of Critical, High Bandwidth Fiber Links
  • Global Power Technologies: Power Monitoring Systems Enhance the Commissioning Process for a Fully Integrated Facility
  • Vigilent Corporation: Too Cool - Changing the Game in Data Center Cooling


About EDI, Ltd.   EDI, Ltd. is a leading healthcare IT consulting and design firm specializing in medical communication technologies, information systems infrastructure, security, audio-visual systems, and data center.

Attendees will be entered into a drawing for a Kindle Fire!



Space is limited.

What a 55kW Rack Power Strip Looks Like

Posted on April 23, 2013 by Gento

Last week, Raritan shipped our first production run of—what we believe to be—the highest-density rack power strip in the industry to date.

Like all other Raritan rack power strips sold in North America, these units are UL Listed (bear the true UL Listed Mark). They will be placed in cabinets that will obviously get very hot, so like all Raritan power strips with the part number prefix “PX2”, these units have a maximum ambient temperature of 140°F (60°C) in North American markets.

55kVA PDU - Low-Res Whole Shot

Although the customer application is confidential, generally-speaking this power strip could easily handle up to twelve blade chassis (with common configurations) in a Tier IV environment:



  • The power strip provides 12 individual circuit breakers, each rated at 20A @ 230V. (It’s actually 240V, but in this client’s case they are running 230V).
  • That means each breaker can handle a maximum of approximately 4500W (UL489 breakers on our power strips are fully-rated, i.e., they can run at their full 20A specification and do not have to be “derated”.)
  • This happens to coincide with real-world power draws of many common blade deployments such as HP c7000 or Cisco UCS 5100 series, etc. So each breaker could potentially support a single blade chassis each.**

**This is meant as a generalization. Please be sure to consult your Raritan power architect for more detailed provisioning guidance.

Today, the status quo for cabinet densities tends to be approximately 5 to 10 kW. Raritan has been very fortunate to have partnered with some of the industry’s most forward-thinking datacenter operators and architects—and have thus designed and deployed a significant number of different power strip configurations at higher densities. For electrical reasons, they cluster in the 14kW, 25kW, 28kW, 33kW, and now 55kW ranges.

It’s a great deal of fun, and I enjoy advising clients on the best way to deploy ever-increasing power densities at minimal cost.

Here are some more photos, if you’d like to take a closer look:

For the technical folks in the audience, here are the comprehensive engineering submittals—including mechanical diagram and one-line drawing.

Please note:

  • This application employs 1” trade size conduit, to provide input power from the RPP—which is why you do not see an input cord.

  • We designed this with two 415V, 3-phase, 40A inputs on each power strip—in order to facilitate certain physical connectivity constraints. But the same electrical solution could have been provided with a single 415V, 3-phase, 80A input.

  • Nerds may want to know that technically this is a 57.5kVA-rated power strip @ 415V/3phase; and 55.4kVA @ 400V/3phase. Also, while I use kVA and kW interchangeably in colloquial conversations; when consulting a client, I will more typically assume a modern power factor of approximately 97.5%—thus making this a ~56kW (415V) or 54kW (400V) power strip. But that would be an obscenely-long title for a blog post, so I just split the difference and call it “55kW”, nominally.

I am obligated by law to mention that this power strip happens to be from Raritan’s PX2-4000 Series—which means that in addition to supplying an absurd amount of power, it also provides billing-grade (+/- 1%) kWh energy metering for every inlet, breaker, and individual outlet [C13 and C19]. It is compatible with our wide variety of environmental sensors (temp, humidity, differential air pressure, leak, door open/close); WiFi (802.11a/b/g/n) options; daisy-chaining; USB mass configuration; etc. And it can be queried via either SNMP v1/2c/3 or JSON-RPC.

But enough with the infomercial… fundamentally, I just think it’s awesome to have a single rack PDU that delivers the equivalent amount of power as consumed by five average U.S. homes.

Visit Us at AFCOM's Data Center World in Las Vegas – Learn and Maybe Even Win

Posted on April 19, 2013 by Gento

Join us as we discuss how to successfully deploy high power to your racks,  and full power chain and network connection management

Stop by our booth (#835) to see our newest Power, DCIM and KVM solutions

Get a registration discount on us—Use code RARITANS13 Register Now - http://www.datacenterworld.com/spring2013/

Deploying High Power at the Rack
Date: Tuesday, April 30 from 8:15 to 9:15 am
Room: Palm D
Speaker: David Wood - Director, Power Business at Raritan

Full Power Chain and Network Connection
Date: Wednesday, May 1 from10:00 to 11:00 am
Room: Banyan CD
Speaker: James Cerwinski - Manager, Project Management at Raritan

We will have live demos at our booth (#835) and will be raffling an iPad.  Be sure to stop by!

Enough Data Center Management Ideas to Make Your Head Spin

Posted on April 18, 2013 by Gento

Data Center ManagementI’ve been back from the GreenGrid Forum 2013 for over a week now, but the insights I formed there are still making my head spin.

Early on, the GreenGrid was focused on keeping data centers cool. We all remember when walking into a data center was like stepping into a refrigerator. Now that is changing. Most IT equipment can now operate reliably at much higher temperatures. So this improved the PUE of data centers without having excessive cooling.

Now, in the age of Petabyte of data being processed, a key theme at the conference was resource efficiency among huge array of compute equipment. To achieve this, we are all now focusing on more granular management. No more refrigerator approach. Now data center managers are looking for efficiencies down at the rack and device level. Take servers for instance.

Consumers of power in a server:

  1. Server processors
  2. Memory
  3. Discs or PCI slots
  4. The motherboard
  5. The fan
  6. Networking interconnects

A GreenGrid study that was of great interest to me focused on the power required for different CPU utilization in data center servers from idle state to active state. When this state changes, the jump in energy draw is dramatic.

The main difference in power consumption between an idle server and an active one is based on the spinning of the disc when the server must move the read-write head. The differential in power utilization from idle to active is about 30%. You can see that in the chart above.

CPU utilization studies have shown that many servers sit idle for large periods of time. But even in that idle state, they spin. And the chart above shows that they are still consuming a large amount of power. The GreenGrid paper suggested segregating servers so that some development and build servers should be isolated and shut down completely when not in use. Backup servers are usually only needed at nighttime when the devices they’re backing up are idle. During the day, they could be shut down.

Another great example in the GreenGrid presentation was a server farm running 10 servers that are utilized only 50% each on average (we suspect your utilization will be even less). Five servers utilized at 100% would be exponentially more energy efficient. The question is, how to understand what each of your servers is doing on a granular level.

How to gather granular data and manage your data center power

Power IQ is our energy management component of Raritan’s DCIM solution, and it helps your data center become dramatically more energy efficient. Here is a partial list of what this pro-active software solution can do:

  • User configurable dashboard
  • Agentless graceful shutdown of Windows®, Linux® and Unix® device groups
  • Psychrometric chart to calculate possible energy savings from simply increasing temperature
  • Energy cost bill-back reports to drive behavior
  • Decommission flags to forecast energy savings when eliminating servers
  • Baseline consumption and changes of various energy saving initiatives
  • Capture peak loads under compute stress to identify excess power capacity in the rack
  • Power capacity forecast charts
  • Power capacity utilization gauges
  • Smart Rack View with Quick Charts

Looking through that list, you can see why Raritan is excited to be in the right place at the right time. We are leaders in intelligent power management for the data center thanks to our intelligent rack power distribution units and our powerful energy management software.

Click here to read the Green Grid White Paper

Click here to learn more about Raritan data center power management solutions

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