1 Using CFD as a Guide When Making Changes to the Data Centre. Nagy Daniel Senior IT Manager Magyar Telekom Technical Unit, IT Operations Directorate

Overview 2 Company overview Problems faced in modern datacentres The benefits of using CFD simulation to control problems Introduction to 6SigmaDC Case study: Adatpark Introduction Issues identified Hot-spot mitigation techniques Review Conclusions

3 Magyar Telekom Group at a glance Integrated operations in Hungary, Macedonia and Montenegro leading telecommunications service provider in all three countries leading SI/IT service provider in Hungary EUR 2.5bn market capitalization Stock exchange listings listed on NYSE and Budapest Stock Exchange delisting from NYSE to start before end 2010 Majority owned by Deutsche Telekom (59.2%) Market shares (Q3 2010): TV: 28% Mobile: 45% Wireline broadband: 36% Mobile broadband: 48%

4 Maintaining a balance of space, power and cooling Maximising capacity in a fixed infrastructure Selecting suitable cabinet layouts Managing differing IT equipment power and airflow requirements Managing the risk of thermally induced downtime Optimising an already populated room Tackling hotspots in an existing datacentre Problems Faced in Modern Datacentres

5 The Benefits of using CFD Simulation to Identify Problems CFD simulation offers a non intrusive approach Analyse problems in a non critical model. Maximise capacity Extending life of existing facilities

6 Introduction to 6SigmaDC 6SigmaDC offers a suite of software programs designed specifically for datacentre use 3D models of datacentres can be built with detail down to the server level

400m 2 floor 3 engineers 3D modelling: 2 days Equipment import: 1 day, thanks to: 6sigmaDC – SM7 integration Scripted CMDB updates Calibration: 2 days Total: 5 days Case Study: Adatpark - Modelling phase 7

8 Case study: Adatpark - Problems Equipments were imported from HP SM7 based CMDB The model was used to highlight existing hot spots as well as areas of potential high temperature. Red cabinets have over- temperature equipment in them. Orange racks contain equipment that is close to overheating

9 Case study: Adatpark – Blanking Issues Air to inlet of severs was being drawn through gaps in blanking. Unused U-slots and Mounting rail side gaps were sealed. Inlets and outlets of Cisco units were segregated.

Produced by Future Facilities Ltd 10 Case study: Adatpark – Results of Blanking Over temperature equipment has been reduced. Including the circled Cisco cabinet. Many server cabinets are still close to the overheat limit. Baseline

11 Case study: Adatpark - Grille positioning Issues There are floor grilles located outside of the equipment aisles – losing cool airflow Floor grilles were arranged more systematically

Produced by Future Facilities Ltd 12 Overheating equipment has been eliminated Some cabinets are still close to their overheat limit Previously Case study: Adatpark – Results of Grille Changes

13 Case study: Adatpark - Removal of Hot Air The result plane shows air temperature 1m above the facility raised floor There are areas where hot air is not effectively removed Hot air is trapped in the rear of some cabinets

14 Case study: Adatpark – Chimney Cabinets In this situation the restructure of equipment was impractical. Chimney cabinets were suggested as a way to direct hot air from servers into the ceiling void. Cabinets having difficulty removing hot air were fitted with chimney attachments

Produced by Future Facilities Ltd 15 Only one piece of equipment remains in the borderline temperature condition No equipment is overheating. Previously Case study: Adatpark – Results of Chimney Cabinet Implementation

Produced by Future Facilities Ltd 16 Use of CFD minimise overheat risk and maximise the potential of the datacentre. Other opportunities to utilise CFD and the Virtual Facility during a datacentres lifespan: Design - Balancing space, power and cooling Design - Selecting suitable cabinet layouts Operation - Managing deployment of IT equipment based on power and airflow requirements Operation - Managing the risk of thermally induced downtime Extended Life - Optimising an already populated room Extended Life - Maximising capacity in a fixed infrastructure Conclusions

17 Thank You!