Description
For The BaBar Computing Group
BaBar has recently moved away from using Objectivity/DB for it's event
store towards a ROOT-based event store. Data in the new format is
produced at about 20 institutions worldwide as well as at SLAC. Among
new challenges are the organization of data export from remote
institutions, archival at SLAC and making the data visible to users
for analysis and import to their own institutions.
The new system is designed to be scalable, easily configurable on the
client and server side and adaptive to server load. It's intergrated
to work with SLAC's mass storage system (HPSS) and with the xrootd
service. Design, implementation and experience with new system, as
well as future development is discussed in this article.
