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Bizarro On My Mind

April 19, 2013 at 10:00 am PST

Saturday morning wasn’t complete for me as a kid if it didn’t include a bowl of pre-sweetened cereal and time watching cartoons.  Challenge of the Super Friends was my favorite, thanks to its unforgettable opening sequence and the chance to see Superman, Batman and other heroes overcome the latest scheme by the Legion of Doom to take over the world.

One of the Legion’s intriguing villains was Bizarro – the imperfect duplicate of Superman with the blocky white face and backwards S on his chest.  Although the writers didn’t give poor Bizarro much personality beyond bad grammar – “Me have plan destroy Super Friends!” – my friends and I enjoyed debating how his backwards, bad-means-good perspective would express itself in everyday activities. Read More »

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Sniffing Out a Data Center’s PUE

April 10, 2013 at 10:30 am PST

Power Usage Effectiveness or PUE, is the most commonly used metric in Data Centers today.  Data Center industry organizations tout it, major companies brag about their scores, and energy efficiency certifications use it in their ratings.

Despite how thoroughly it has been embraced, though, it’s not without flaws.  In my opinion, they mostly stem from the fact that PUE is more complicated than it looks.  Although calculating the metric is a relatively straightforward exercise, the resulting score doesn’t tell you anything about the factors that influenced it.  Hence why it’s a bad idea to compare PUE among Data Centers.

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Data Center Metrics to Mull Over

April 3, 2013 at 10:00 am PST

How well is your Data Center performing?

How do you know?

I went shopping for a car last year and was pleased to see several models equipped with real-time displays of their miles per gallon performance.  That’s a great feature, in my opinion, because it offers drivers up-to-the-moment insight into how efficiently their cars are operating.

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Cisco’s Other Production Data Center

January 9, 2013 at 10:00 am PST

If sibling rivalry exists among Data Centers, our Richardson, Texas facility must be jealous.  Unveiled in 2007 as Cisco’s next-generation Data Center and subsequently toured by thousands of visitors, the site hasn’t received much attention since its younger brother came online in 2011. Read More »

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“Rules of Thumb” for Co-Locating UC Hosts on Cisco UCS Servers

One part of my job involves designing the virtualization model for our internal unified communications (UC) system deployments around the world. A critical task in this design is specifying which UC virtual machines (VMs) can share a Cisco Unified Computing System (Cisco UCS) server chassis or blade and which ones can’t. When migrating UC servers to a shared virtual environment, we need to make sure we carefully balance each VM’s needs for CPU, storage, network and memory. Read More »

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