Information Technology Reference
In-Depth Information
Figure 2. House of scalability
Figure 3. House of affordability
In the case of target-function
TF
1
(design for
easy and fast scalability), the following require-
ments are considered:
RE
1
[
TF
1
]-Good functional
scalability (system enhancement by adding new
functionalities at minimal effort: fast and easy
adding new files in any format, fast and easy
adding or removing communication tools, fast
and easy adding or removing new multi-media
applications, etc.);
RE
2
[
TF
1
]-Good load scal-
ability (fast and easy expanding or contracting
its resource pool, fast and easy adding new files
to the course, fast modification of files' content
and structure, etc.);
RE
3
[
TF
1
]-Good geographic
scalability (maintenance of performance, useful-
ness and usability regardless of expansion and
concentration to a more distributed geographic
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