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USystems ColdLogik

Perfect climate, perfect control

The problem

As real estate prices increase, power availability diminishes and businesses demand more processing power IT managers are being pushed to deploy their latest cycle of server upgrades in extremely high density environments. The server industry has also been instrumental in coercing businesses to take this path with the advent of blade servers. Being able to get up to 80 servers in a standard 42u cabinet reduces the required floor space by nearly half but brings a new set of pains to the data centre manager's working day. Concentrating servers in a single cabinet means that the power requirements of the cabinet and subsequent heat output is greatly increased, usually beyond levels that existing infrastructure can cope with.

ColdLogik Water Cooling Solutions
A cabinet fully loaded with blade servers can produce 25Kw of heat

 

Introducing ColdLogik from Usystems...

Designed to maximise uptime and minimise operational costs ColdLogik adopts a new approach to cooling with the heat exchange taking place in the rear door cabinet exhaust meaning that the air leaving the cabinet is the same temperature as the air that goes in. What does this mean to the data centre manager? Within the confines of the data centre the ColdLogik cabinet has a thermal foot print of zero.

How does it work?

ColdLogik adopts the principle of supplying chilled water to multiple heat exchange doors from a central unit. The central distribution unit takes chilled water from the buildings existing chilled water loop, regulates the pressure, filters where necessary and monitors flow and return temperatures to ensure that an appropriate level of cooling is being delivered to each cabinet.

ColdLogik Solutions

The heat exchange rear doors are fitted with high density coils carrying the chilled water and a bank of fans to pull the air in through the cabinet front door, over the hardware and then out through the rear heat exchange door. Heat transfers from the servers to the air, then from the air to the water circulating through the rear door. The heat is carried away in the water whilst the air is ejected back out into the data centre at the same temperature it entered the cabin.

Traditional air cooling delivered through under floor plenum chamber

Traditional Air Cooling

  • Majority of cold air is lost through leakage leading to inefficiency and subsequently a larger carbon footprint
  • Returning hot air can get into cold aisle creating heat spots leading to more instances of hardware failure
  • Cooling not distributed evenly across full height of cabinet leading to a shorter life expectancy of equipment in the top 14u of the cabinet

Water cooling delivered through ColdLogik

ColdLogik Water Cooling

  • Heat exchange between air and water taking place closer to the heat source leading to higher efficiency and greater control
  • Even distribution of cooling across all 42u of cabinet height
  • Cabinet has no thermal footprint allowing greater flexibility for data centre planners
  • No requirement for hot aisles

Why should I use ColdLogik in my data centre?

  • Efficiency: Doing the heat exchange in the cabinet means that 100% of cooling resources are directed at the cabinet. In traditional plenum type cooling systems up to 72% of conditioned air is lost before it reaches the cabinet and hardware. Using Coldlogik can cut the electricity used for cooling by up to 24%. When this is put in the context of the data centre's complete power budget, of which around 25% is used for cooling purposes the numbers tell a very compelling story and translate to considerable savings
  • Scalability: ColdLogik is completely modular meaning that you only need to pay for the cooling capacity you require; as your requirements grow you add heat exchangers, then when the CDU capacity is reached you simply add another. ColdLogik offers a pay as you grow to data centre planning and management.
  • Flexibility: The modular nature of the design means that data centre managers can direct cooling where and when it is required. The power draw and subsequent thermal foot print of the data centre varies through the day and as such a modern data centre requires a cooling system representative of this.
  • Reliability: The CDU has 100% redundancy built in meaning that component failure will not lead to a shutdown of the cooling system

Still not convinced?

  • Q: My facilities department are uneasy about having water circulating in my data centre, how can I convince them?

    A: Every leg of the ColdLogik system is closely monitored and any drop in pressure would lead to an automatic shutdown of pumps and isolation of the affected leg. In addition connections are terminated with quick release valves which close instantly in the event of disconnection or a drop in pressure.

  • Q: How do I deal with the condensation created by chilled water circulating in the data centre?

    A: Coldlogik constantly monitors the temperature of the circulating water and keeps it at 2 degrees Celcius above dew point.

  • Q: I need to implement additional cooling for my data centre but have recently made an investment in new cabinets, is there anyway I can implement Coldlogik whilst still getting a return on my investment in cabinets?

    A: The heat exchange door can be retro fitted to any cabinet.

  • Q: Why would Coldlogik be better than increasing the capacity of CRAC units in my data centre?

    A: Because cooling using CRAC units is highly inefficient increasing the capacity by 100% would mean that the increased cooling delivered to the cabinets could be as little as 28%.

Do you need ColdLogik?

  • Do you have a heat problem in your data centre?
  • Do you, or are you planning to deploy blade servers?
  • Do you plan to grow your data centre in the next 12 months?
  • Do you get frequent hardware failures?
  • Are you under pressure to reduce your carbon footprint?

If you answered yes to any of the above contact your account manager to arrange a free survey, consultation and report.

Click here to see how this solution can be combined with other ZONE solutions

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