Insights into Google’s PUE, a laptop approach to Power Supplies and UPS for Servers achieves 99.9% efficient UPS system

Chris Malone and Ben Jai presented “Insights into Google’s PUE”

Areas to be discussed are

• Innovations and best practices
• Measurement and method & accuracy
• Benefits of measuring PUE

and a PUE update + a google server on display

Some details discussed were.

Typical data center PUE is 2.0 vs. Google’s 1.16.

85% reduction in cooling .7 vs. 0.15 achieved by Closed-couple cooling , raise temperatures, economizers

80% Power distribution .22 vs. 0.039 by 99.9% efficient UPS

This last point of 99.9% efficient UPS is where Ben Jai explained the google approach for UPS. electronics design responsibility.2003 –2007.

Ben pointed out he did not seek out to find a UPS solution.  But, started looking at the server and issues. Over provisioning in power supply is a problem.  Google Server has PSU to motherboard to disk.  Let motherboard make determination of disk drive power requirements.

The next was add a battery to the motherboard to provide the battery backup required for the server.

Below is a picture of the motheboard with power supply and battery changes.  The server is now close to a laptop design, but only enough battery power to allow backup power to be provided vs. the hours we expect for laptops.

Comments

[tinkthank]

I call BS on the 99.9V efficient UPS. That's a 12V lead acid battery in the picture. Unless it's a custom system board that can handle a several volts of droop as the battery discharges then there must be a buck boost circuit after the battery. That buck boost circuit will not be 99.9% efficient.

It is certainly far far better than a traditional dual conversion 480V AC UPS but I'm tired of folks gaming numbers.

[Abe Ash]

Today’s Google announcement on Back up with independent batteries mounted with every server is getting thumbs up.

You still need batteries that need charging, monitoring and replacing. Consumption and supply chain is not eliminated.

Having a Fuel cell Back-Up system in a data container that only turns on when needed should be a valid value propositions.

[phalnp phalnp]

I smell the taste of wine. see you! "We do not talk more that day. We stood up, shook his hand and eye lookedeach and so on. Bees were shut out, but came to backhesitatingly. lvjiim lvjiim - <a href="http://www.monclerjackets.fr">Moncler Doudoune</a>.

[Atlanta Alarm Monitoring]

I enjoyed your blog. It’s easy to read, the content is good, and you’re an educated writer unlike most of the blogs I come across when searching on this topic.
<a href="http://www.smithmonitoring.com/atlanta-ga-security/">Atlanta Alarm Monitoring</a>
[url=http://www.smithmonitoring.com/atlanta-ga-security/]Atlanta Alarm Monitoring[/url]

[pfotsr pfotsr]

Hey ! am I glad to vist your blog ! from this I can get some information and facts that I didn’t know prior to. You made my day. Thank you rather much! dscxcn dscxcn - <a href="http://www.mulberryukfactory.com">mulberry factory outlet</a>.