Networks Europe Nov-Dec 2017 | Page 45

45 approach was 1.6MW . Using the traditional data centre approach the UPS capacity is typically oversized by 1.2 times the IT capacity . However , when the UPS is distributed across 200 racks in the micro data centre approach a similar 1.2 times oversizing factor results in a 6kW UPS , which may not be enough . Because of the load diversity effect , the UPS capacity in a distributed architecture should be slightly higher to accommodate occasional rack densities above the 5kW / rack average . In this analysis , an 8kW UPS was used for each micro data centre , resulting in a higher overall UPS power requirement than the traditional approach .
MICRO DATA CENTRES

45 approach was 1.6MW . Using the traditional data centre approach the UPS capacity is typically oversized by 1.2 times the IT capacity . However , when the UPS is distributed across 200 racks in the micro data centre approach a similar 1.2 times oversizing factor results in a 6kW UPS , which may not be enough . Because of the load diversity effect , the UPS capacity in a distributed architecture should be slightly higher to accommodate occasional rack densities above the 5kW / rack average . In this analysis , an 8kW UPS was used for each micro data centre , resulting in a higher overall UPS power requirement than the traditional approach .

The overall capital cost for a traditional 1MW data centre was estimated at $ 6.98m whereas the micro data centre approach allowed a similarly rated data centre to be deployed for only $ 6.98m – a saving of 42 %. This clearly shows the enormous savings in capital costs that are possible for building a data centre using the distributed prefabricated approach rather than building a new facility from scratch .
It ’ s not all one way There may be situations where the traditional approach is necessary . Even if the 200 micro data centres were not all deployed in separate facilities , with several being deployed in a single location , there would be an inevitable penalty in terms of network latency for applications hosted across several sites . Depending on the requirements of the application , it might be essential to have it hosted in its entirety on a single physical data centre .
Larger organisations might be able to consider the option of building dedicated WAN networks between several facilities to improve latency , but smaller organisations may be forced to rely on the public WAN connections . However , if latency is not a critical factor and one makes use of highly standardised hyperconverged prefabricated equipment , using micro data centres in combination gives companies of modest size the ability to scale up their IT resources . All in a cost-effective and reliable manner paying only for what is needed , when it ’ s needed . n
www . networkseuropemagazine . com