  Multi-access Edge Computing (MEC) is one of the enabling technologies of the
fifth generation (5G) of mobile networks. MEC enables services with strict
latency requirements by bringing computing capabilities close to the users. As
with any new technology, the dependability of MEC is one of the aspects that
need to be carefully studied. In this paper, we propose a two-level model to
compute the availability of a 5G-MEC system. We then use the model to evaluate
the availability of a 5G-MEC system under various configurations. The results
show that having a single redundancy of the 5G-MEC elements leads an acceptable
availability. To reach a high availability, the software failure intensity of
the management elements of 5G and MEC should be reduced.
