Information Technology Reference
In-Depth Information
No. Sites
No. CPU
50000
45000
40000
35000
30000
25000
20000
15000
5000
0
300
250
200
150
100
50
0
10000
FIGURE 3.1
Development of the EGEE infrastructure.
but also in the Americas and Asia Pacii c. Figure 3.1 shows the develop-
ment of the EGEE infrastructure in number of sites and CPUs from the
start of the project in April 2004 up to summer 2007.
EGEE has decided early on that a central coordination of these resource
centers would not be viable, mainly because of scaling issues. Hence,
EGEE has developed a distributed operations model where regional
operations centers (ROCs) take over the responsibility of managing the
resource centers in their region. Regions are dei ned geographically and
include up to eight countries. This setup allows adjusting the operational
procedures to local peculiarities like legal constraints, languages, best
practices, and so on. Currently, EGEE has 11 ROCs managing between
12 and 38 sites as shown in Table 3.2. CERN acts as a special “catch all”
ROC taking over responsibilities for sites in regions not covered by an
existing ROC. Once the number of sites in that region has reached a signii -
cant number (typically over ten), the creation of a new ROC is envisaged.
TABLE 3.2
EGEE Resource Operation Centers
Region
Number of Countries
Number of RCs
UK/Ireland
2
26
France
1
12
Italy
1
36
Northern Europe
8
29
Germany/Switzerland
2
15
Southwest Europe
2
18
Southeast Europe
8
38
Central Europe
7
23
Russia
1
15
Asia-Pacii c
8
21
CERN
6
14
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