Structured Cabling Systems
CCS Commercial Overview - Session 1
Server Rack Strategies




9th January 2009

Paul Mathews M...
Introduction to Servers
•   A server hosts a mail server, management of files and printer resources

•   The server offers...
Brief overview of Servers
•   Tower servers offer inclusive server and storage solutions and are ideal for
    small, remo...
Introduction to Server racks/cabinets
•   A rack should hold and securely locate electronic
    equipment

•   A rack shou...
Facts about Data Centres and Computer Rooms
•   In the present day, servers are generating heat of around 2.5kW per rack
 ...
Facts about Data Centres and Computer Rooms
•   On average – every $1 spent on hardware, an additional $0.50 is spent on
 ...
Introduction to energy use
•   Energy that is delivered by electrical utilities is expressed and charged for in
    kWh; k...
What does increased energy use mean?
•   It’s not government green – new EU Code of Conduct legislation requirements
    h...
Ventilation – 1kW of heat dissipation
•   Small to medium sized computer
    rooms within SMEs

•   Standard inset perspex...
Ventilation – 2kW of heat dissipation
•   Ventilated rack and doors, horizontal fan unit

•   Chilled air access through f...
Ventilation – 6-20kW of heat dissipation
•   Typically computer room areas within data
    centres

•   Specialised racks ...
Energy Efficiency Best Practices
•   Install blanking panels

•   Coordinate CRAC Units

•   Improve under floor airflow

...
Power Supply
•   Server racks need to be powered
    - Europe typically specifies 32 Amp, 240 V
    single phase feed

•  ...
Power Distribution
•   The power is distributed by a unit of sockets through a Power Distribution Unit
    (PDU)

•   PDUs...
Building Automation Systems
•   Server racks must be secure and include a system to monitor environmental
    conditions (...
Server Rack Technical Articles
•   The Ideal Server Cabinet – Connectix Article 6
    http://www.connectixcablingsystems.c...
Connectix Technical Articles

•   Log on to www.connectixcablingsystems.com for full access to our data
    centre and hig...
Thanks for your time.
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Commercial Overview SCS Session 1 Server Rack Strategies

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Commercial Overview SCS Session 1 Server Rack Strategies

  1. 1. Structured Cabling Systems CCS Commercial Overview - Session 1 Server Rack Strategies 9th January 2009 Paul Mathews MInstSMM Global Channel Manager
  2. 2. Introduction to Servers • A server hosts a mail server, management of files and printer resources • The server offers security to a companies processing resources • A server enables faster and efficient data processing • Servers support data backup and security • The server navigates traffic and supports operations for desktops and desktop applications
  3. 3. Brief overview of Servers • Tower servers offer inclusive server and storage solutions and are ideal for small, remote and branch office environments • Rack servers offer maximum computing power in compact, space saving design and are ideal for data centres with external storage • Blade servers offer maximum computing power in compact, space saving design with advanced power and cooling designs and are ideal for data centres with external storage
  4. 4. Introduction to Server racks/cabinets • A rack should hold and securely locate electronic equipment • A rack should provide organised routing of power and communications cabling • A rack should assist airflow and cooling of network equipment • A rack should provide aesthetically pleasing construction • Most popular racks are 42U (internal height) for 19” rack mount equipment, approx 2 metres tall and 80cm – 120cm deep
  5. 5. Facts about Data Centres and Computer Rooms • In the present day, servers are generating heat of around 2.5kW per rack (approx 5 servers loaded), this is typically 750kW per sq m • In the future, servers are expected to generate heat of up to 10kW as CPUs become even more densely packed • This impacts revenue costs of energy bills as CRAC units are used to compensate the heat • Energy efficiency can be improved by the choice of cabling, design and routing
  6. 6. Facts about Data Centres and Computer Rooms • On average – every $1 spent on hardware, an additional $0.50 is spent on power and cooling, more than double the amount 5 years ago (www.idc.com) • Data Centre managers claim power and cooling issues are the single largest problem in the data centre (www.gartner.com) • 48% of computer room LAN and data centre budget is being spent on energy, an increase of 8% in 5 years (www.gartner.com)
  7. 7. Introduction to energy use • Energy that is delivered by electrical utilities is expressed and charged for in kWh; kilowatt hours Examples • If a heater is rated at 1000 watts (1 kilowatt) and that heater is on for one hour then one kilowatt hour is used • Using a 60 watt light bulb for one hour consumes 0.06 kilowatt hours of electricity. Using a 60 watt light bulb for one thousand hours consumes 60 kilowatt hours of electricity. • If a 100 watt light bulb is on for one hour per day for 30 days that is 30 days X 100/1000 = 3 kilowatt hours.
  8. 8. What does increased energy use mean? • It’s not government green – new EU Code of Conduct legislation requirements http://www.connectixcablingsystems.com/news/detail.cfm?item=76 • Increased energy costs for businesses and governments • Increased emissions (inc. greenhouse gases and electricity generation) • Increased strain on the National Grid • Increased electricity demand • Increased capital costs for expansion of computer rooms and data centres • Increased capital costs for new computer room and data centre projects DC = direct current AC = alternating current amps x volts x power factor = power Watts
  9. 9. Ventilation – 1kW of heat dissipation • Small to medium sized computer rooms within SMEs • Standard inset perspex door • Horizontal fan unit
  10. 10. Ventilation – 2kW of heat dissipation • Ventilated rack and doors, horizontal fan unit • Chilled air access through floor tile access Ventilation – 2-6kW of heat dissipation • Escalation policy should be implemented • Increase floor tile vent size up to 75% open area These solutions will Take the heat dissipation • Replace floor tiles with fan assisted grate tiles to approx. 6kW per rack • Add specialist fan units to top and base of rack • Install a cabinet with a rear door utilised as a fan unit
  11. 11. Ventilation – 6-20kW of heat dissipation • Typically computer room areas within data centres • Specialised racks required with dedicated chilled water supply • Hot aisle and cold aisle floor design • No airflow compromised by gaps within the racks (see www.ashrae.org – Thermal Guidelines for Data Processing Environments) • Air gaps within racks sealed with brush strips • Excessive gaps at side of rack sealed with air dam kit
  12. 12. Energy Efficiency Best Practices • Install blanking panels • Coordinate CRAC Units • Improve under floor airflow • Implement hot and cold aisles • Install sensors to monitor temperature • Implement cold aisle or hot aisle containment Additional information can be found in the Gartner report ‘How • Raise the temperature in the data centre (ASHRAE) to Save a Million Kilowatt Hours to improve electrical use in your Data Centre’ • Exploit ‘free cooling’ • Design new data centres and computer rooms using modular cooling
  13. 13. Power Supply • Server racks need to be powered - Europe typically specifies 32 Amp, 240 V single phase feed • x 2 feeds are required for redundancy and back up purposes • A dual 32 AMP feed is counted as supplying 32 Amps x 230 Volts = 7.36 kVA • For loads above 7 kVA then a 3 phase feed can be used to deliver 22 kW • Power cables need to be kept separate from data cables – see Connectix guidelines for proximity subject to 16/32 Amp power feeds
  14. 14. Power Distribution • The power is distributed by a unit of sockets through a Power Distribution Unit (PDU) • PDUs are responsible for providing clean/conditioned power to the racks internal network equipment • PDUs can also be utilised for: Intelligent sequential start up Automatic crossover switch between 2 supplies Status and power usage reports (LED or IP managed system) • If more than 1 server rack is operational, a separate circuit breaker for each rack power supply will isolate power surges and spikes
  15. 15. Building Automation Systems • Server racks must be secure and include a system to monitor environmental conditions (temperature and humidity) through a central location (BAS) • Rack sensor systems offer information on: Temperature Smoke Water Humidity Access Vibration Airflow Air quality (particles)
  16. 16. Server Rack Technical Articles • The Ideal Server Cabinet – Connectix Article 6 http://www.connectixcablingsystems.com/library/detail.cfm?item=38 • Improving Cooling and Airflow – Connectix Article 14 http://www.connectixcablingsystems.com/library/detail.cfm?item=83
  17. 17. Connectix Technical Articles • Log on to www.connectixcablingsystems.com for full access to our data centre and high speed LAN support articles • Log on to www.connectixcablingsystems.com/events for details of our Data Centre Design Principle Seminars run in association with The IET IET Endorsed CIBSE Continuing Training Professional Development BICSI Continuing Education Credits provider
  18. 18. Thanks for your time.

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