Archive for the ‘data centres’ Category

Distributed Smart data centres – working sun set to sun rise!

Thursday, November 10th, 2011

Cooling is one of the most pressing concerns for data center managers currently, as the equipment required to cool a data center consumes power, and thus impacts on both operational (CAPEX) costs and (OPEX) efficiencies. Usually sites of this nature would have chillers in place to act as backup cooling for warm days.

For internet backbone providers and international data centre operators with cloud storage technology can now consider shifting computing workloads from data center to data centre, where this will result in “follow the moon” energy management strategies, whereby organisations take advantage of lower power and cooling costs by only using data centers at night time, rather than during the day.

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When the weather get hots, they will effectively switch off equipment at the ‘hot’ center and instead transfer computing workloads to other data centers, relying totally on fresh air cooling. But the free air cooling concept within a data center does have its design weakness. Most regional only data centre businesses would not be prepared to accept the inherent risks in this approach, as this becomes a N+1 resilience issue of available data centres that are within the various time zones following the moon. N+1 redundancy is a form of resilience that ensures system availability in the event of component failure. Components (N) have at least one independent backup component (+1).

Data Centres: Building Up: Nine-Foot High Server Racks

Wednesday, March 24th, 2010

How do you get more mileage out of your data center space?

Some companies in the US are building up, rather than out. By using taller racks and cabinets, these users are able to pack more servers into each square foot of data center space. This practice is being reported in leased data center facilities designed to support higher power densities.

“Our customers are more and more sophisticated, and now they understand that power density is just a matter of how high the racks can go,” said Hossein Fateh, President and CEO of DuPont Fabros Technology. “You can build vertically as well as horizontally, and when you build your rack higher they don’t have to pay extra for it. To be more efficient, they will build a nine foot rack. We just went through the exercise with one customer who hadn’t done it before.”

A standard server rack is seven feet high and can accommodate 42 units (42U) of rackmount server equipment in a 19-inch wide slot. There are many options in rack size, with manufacturers offering enclosures that are up to 23 inches wide (a size often used for telecom equipment) and height options ranging from 44U and a nine-foot tall 58U rack.