CERN Accelerating science

A single EOS instance for all LHC VOs?


I have been wondering: Would it be possible to have a single instance of EOS to serve several LHC Vos (all 4 if possible), knowing that they use different authentication schemes (like Alice uses tokenauthz) ?
If the answer is yes, what would be the limitations, would it be possible to distribute space using quotas, etc.


Hi Jean Michel, the authentication allows to define areas with tokens and areas with strong authentication. Quota allows to reserve space per VO. The most controversial part is the sharing of bandwith/iops between VOs… this you can achieve by segmenting the instance in one soace(group of fsts) per VO. Or you can atleast dedicate individual disks to vos but share the nodes for all VOs