@@ -211,7 +211,7 @@ resources at CNAF has been so far below the figures for a
units are added in the following years. KM3NeT software that
runs on the GRID can use CNAF computing nodes in opportunistic mode.
Already now, the data handling policy to safeguard the products of Tier-0
Already now, the data handling policy to safeguard the products of Tier0
is in place. Automatic synchronization from each shore station to both
CC-IN2P3 and CNAF runs daily and provides two maximally separated
paths from the data production site to final storage places. Mirroring
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@@ -219,11 +219,11 @@ and redundancy preservation between CC-IN2P3 and CNAF are foreseen and
currently at an early stage.
CNAF has already added relevant contributions to KM3NeT in terms of
know-how for IT solution deployment, e.g.~the above-mentioned synchronisation, software development solutions and the software-defined network at the Tier-0 at
know-how for IT solution deployment, e.g.~the above-mentioned synchronisation, software development solutions and the software-defined network at the Tier0 at
the Italian site. Setting up Software Defined Networks (SDN) for data
acquisition deserves a special mention. The SDN technology\cite{SDN} is used to
configure and operate the mission-critical fabric of switches/routers
that interconnects all the on-shore resources in Tier-0 stations. The
that interconnects all the on-shore resources in Tier0 stations. The
KM3NeT DAQ is built around switches compliant with the OpenFlow 1.3
protocol and managed by dedicated controller servers. With a limited
number of Layer-2 forwarding rules, developed on purpose for the KM3NeT