Something you should aware off

• An entry in the Catalog is uniquely defined by

  • Its storage type (NFS, HPSS, local, ...)
  • A site (BNL, PDSF, ...)
  • A node (may default to 'localhost' for NFS)
  • A path (there may be multiple copies of a file)

• Seems complicated BUT

  • To make all of this automated, a user front end was created
  • It takes care of the site specific resource requirements
  • It is aware of file placement and file “sanity”
  • It resolves file uniqueness
  • It is fully integrated with the FileCatalog

Notes: