LHC computing represents a tremendous technical challenge with
demands for processor power, storage, and networking at least
a hundred times more than we know how to handle today.
The model that the particle physics community is using for LHC
computing is multi-tiered, with a large centre at CERN linked
by a high-speed network to approximately 10 centres in national
or regional data centres, each of which will have significant
resources. These in turn fan out to local regional centres with
the ability to perform smaller subsets of analysis and so on down
to individual universities.