Distributed filesystem for dummies

Distributed filesystem for dummies

guys!
I have multi-terrabyte file storage server and notebooks with 100-200 GB
drives
I need to achieve such scenario:
I access files from storage server with notebook. Via something that
behaves like samba, single network location for all server,
then on notebook I mark some folders within server's root to be accessible
offline, their contents are being cached on notebook,
I go offline and see only folders that were marked offline. Then I modify
files in them.
When I go back online, modified files uploads back to server.
What software I need to do that? Server might be either Windows or Linux,
notebooks are Windows and Mac