Lifetime of data on the FFB

Warning
This section is In progress

xtc folder

xtc files are immediately copied to the offline filesystem
the lifetime on the ffb is dictated by how much data is generated
- typically files stay on the ffb during the run-time of an experiment
- however if space is need files from previous shifts might get purged
- after an experiment is done the ffb should not be used anymore except if discussed with the POC

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