Columnists: Clemens Pfeiffer

Clemens Pfeiffer is the CTO of Power Assure and is a 25-year veteran of the software industry, where he has held leadership roles in process modeling and automation, software architecture and database design, and data center management and optimization technologies.

Software Defined Power in Load Balanced Web Services Environments

Application load balancing is done by distributing workload across many computer servers.  In the hosting industry, it is commonly used for balancing http(s) traffic over multiple nodes acting together as a web service.  A load balancer will enable users to optimally distribute traffic from a single access point to any number of servers using any number   …Continue Reading

Software Defined Power and Its Meaning for Application Reliability in Data Centers

In today’s “always connected” world, the level of acceptable downtime for enterprise software applications is rapidly approaching zero.  No longer is “99.99% available” an acceptable expectation.  For many corporations, enterprise applications are mission-critical assets that must be available 24×7, 365 days a year. However, according to a recent survey, more than 90% of datacenter operators   …Continue Reading

Steps for Implementing Software-Defined Power in Enterprise Data Centers

Software-Defined Power is an emerging solution to application-level reliability issues being caused by power problems.  Software-Defined Power, like the broader Software Defined Data Center (SDDC), is about creating a layer of abstraction that isolates the application from local power dependencies. I believe Software-Defined Power requires IT to continuously match resources with application demand and to   …Continue Reading

The Key Metrics for Maximizing Energy Efficiency in Data Centers

The cost for electrical energy represents 25-40 percent of the operational expenditures in data centers today.  Both the US Department of Energy and Gartner have observed that the cost to power a server over its useful life can now exceed the original capital expenditure.  Gartner also notes that it can cost over $50,000 per year   …Continue Reading

The (Software-Defined) Data Center of the Future

To keep pace with the relentless growth in demand for online applications, the data center of the future will need to be more power conscious and more energy efficient.  And to fulfill both of these requirements, the data center itself will need to become software-defined. “Software-Defined Data Center” (SDDC) is a new term for an   …Continue Reading

Achieving Energy Proportionality in Data Centers

In a recent article titled Power, Pollution and the Internet, The New York Times investigated a well-known and persistent problem: “Most data centers, by design, consume vast amounts of energy in an incongruously wasteful manner, interviews and documents show.  Online companies typically run their facilities at maximum capacity around the clock, whatever the demand.  As   …Continue Reading

10 Key Data Center Energy Management Trends for 2013

The ways data centers consume power will continue to undergo both subtle and substantive transformations in 2013. The first three trends identified here started in 2012, when organizations began struggling with increased power demands in the face of constrained capacity caused by both inefficient equipment and stranded power. These trends will continue into 2013 and   …Continue Reading

Data Centers and the Smart Grid

This article is part of a series that expands on the Top Trends in Data Center Energy Management. The first article covered The Must-Know Metrics for Data Center Energy Management, and the second covered Energy Management in Virtualized Data Centers.The previous articles described how IT and facilities managers can improve efficiency reduce power consumption in   …Continue Reading