DataHandling

• dCache - a large distributed disk system for holding data
  • the three flavors of dCache

/pnfs/mu2e/scratch - files purged as needed (lifetime ~20d)

/pnfs/mu2e/persistent - files never purged

/pnfs/mu2e/tape (and others) - files are mirrored to tape, staged when needed

• • monitors
• enstore - the tape system
  • monitors
• SAM - file metadata and data handling management system
  • monitors