Craig Bevan

I am a Data Centre Man.

about me

What Craig Does


$$$ Cost Reduction $$$

Through cost saving incentives. Through diversity, stream lined processes, governance and appropriate engagements with client care and vendors to saving millions of $$$.


Effective Data Centre application solutioning

BMS, DCIM, RF-Code, Tileflow and realtime data trend monitor reporting.



An all rounder who gets Management tasks completed effectively and on time ever time, regardless of any given situation. This include people, processes, governance, risk, HSE, FM, Audit (ISO), IT, MEP and client care…



I have strong project management skills. It is a long established fact that a reader will be distracted by the readable content.

Work Process







404 Blog Form Elements



Sept 2008 – Current

Data Center Management & DC Design consultancy


Having been responsible for managing a Tier IV Data Center and Data Center operations, in addition to work with Finance on capital planning budgets quarterly, and forward yearly preparation and oversight; lead the Production and Telecomm teams, to include, capacity planning and infrastructure project management, as well as serve as Infrastructure Liaison to Project Management Office And Development for successful operational deployment.

  • Setup operational processes to ensure international best practice are adhered to for a newly commissioned Tier IV Data Center. To provide and setup all appropriate process documentation across all area’s of the Data Center and to include office building and car parking processes.
  • Successfully design, upgrade and convert multiple unused store areas into high density computer suits, for standalone Co-Lo clients to provide additional revenue streams. Streamline day to day operations and all client processes across the board, saving millions of $$$ over the years.
  • Assuring a non-disruptive rollover of operations by creating validation procedures, and developing special processing requirements.

Data Center Design to international requirements as defined by the Uptime institue standards for certified Data Centers tier ratings.

  • Site identification, acquisition and site due-diligence. Utilities supplies and connection (Water, Power, Telco).
  • Data Center solutions from conversation of building space into a state of the art computer room, to a complete Data Center custom design to fit the needs of the end-user, using the latest trends and technologies available.
  • Designing the best affordable reliable power supply solutions that fit your needs, why’ll maintaining and keeping operational your mission critical systems.
  • Solutions that meet the needs for ALL your cooling and AC requirements. As well as building requirements, I can solution the efficient cooling requirements for white floor space, including hot/cold isle containment to high power custom designs for density computing.
  • Fire protection and monitoring systems, from mist, oxygen reduction, and gas systems.
  • State of the art CCTV HD video and monitoring systems, and Access control access systems.
  • Designing of high-speed infrastructure setup and installation. To include MM/SM fibre connectivity, UTP, IT racking solutions and add-on components to fit the client needs.
  • Administration, documentation, process control, roll over to live production documentation, and certification readiness…

Sept 2006 – 2008

Security & Data Centre


Assigned back to working with various Government Departments, Country wide…

May 1994 – 2006

Data Centre Management

Various roles at multiple locations for EDS.

Currently being updated.



Let’s Talk

Reach Me

Currently Based in the UAE

Tel : +971.


Open to Opportunities

Drop Me A Line


People seem to get confussed when it comes to the subject of PUE, the importance of PUE in the modern Data Centre and more importantly actually calculating correctly the PUE measurement. It is a question I seem to get asked more often than not.. PUE is easy, or to state correctly power usage effectiveness

Simply put power usage effectiveness (PUE) is a measurement used to determine the energy efficiency of a Data Centre. PUE is calculated by dividing the amount of power entering a Data Centre by the power used to run the computer infrastructure within the Data Centre.

PUE is therefore expressed as a ratio, with overall efficiency improving as the quotient decreases toward a PUE value of 1.

As 1 example would be,  a PUE value of 2 means that for every kW used to power IT equipment, an additional kW is required to deliver the power and keep the equipment cool.

Data center managers are increasingly working to take measures to reduce the PUE footprint.

Calculating PUE

Consider that the power entering the data center (measured at the utility meter) is 100 kW and the power consumed by the IT load (measured at the output of the UPS) is 50 kW, PUE will be calculated as follows:

PUE = 100 / 50 = 2

A PUE value of 2 is quite usual for a data center. It means that for every watt required to power a server, 2 watts of power is consumed. Since we pay for every watt of power entering the data center, every watt of overhead represents an additional cost. Reducing this overhead will reduce the overall operating costs for the data center.

The two ways in which we can bring about a change and improve data center energy efficiency include:

  • Reducing the power going to the support infrastructure
  • Reducing losses in the power system.

This way we can ensure that more of the power entering the data center should make it to the IT load; consequently, improving data center energy efficiency and reducing the PUE.

When the PUE metric is not always ideal

Of course only using PUE as a measurement of data center efficiency would not be ideal as we need to look at many variables? Data center managers are under immense pressure to reduce costs and match the reported PUE with that of other companies. Unfortunately, this is not always the right approach and can have a negative impact. If data center managers focus only on reducing PUE, they may inadvertently use more energy and increase data center costs.

For example, a captive data center which has input power of 100 kW, 50kW of which is being used to power IT equipment. As previously illustrated, this would give us an initial PUE value of 2
Suppose the organization now decides to virtualize some servers. In fact, it is so successful with virtualization that it is able to reduce the power to IT equipment by 25 kW and the overall power to the data center by the same amount. In this case with the same compute capacity, the PUE may go up as data center utilization goes down but it will still lead to a higher saving on overall power cost. So PUE should not be the only focus for saving power.

Should you need any further information on this subject matter, please don’t hesitate to get in touch.



craig2A Data Centre Solutioning Expert…

with over 25 years expertise…

site will be online 10th November 2016…

In the meantime please contact me at:-