This page describes the flow of importing collections to SLAC and put them into HPSS and xrootd. There are four independent steps

1. Transfer: User transfers a collection (using KanCollTransfer.pl) to the bbr-xfer cluster at SLAC. The files of the collection are put into a temporary directory.
2. Import: An import cron job handles the collections.
   1. The files are moved from the temporary space into the migratable space, using the proper collection/file name.
   2. The files are transfered to the xrootd kan-cluster (no nessacary).
   3. The cron job is waiting until the migration daemon put the files into HPSS.
3. Migration: The migration daemon (MigrPurge) transfers new files in the migratable area into HPSS.
4. IsLocal: If a collections was recorded in the bookkeeping, its is_local flag will be set by the isLcoal cron job. This cron job checks for collections in the bookkeeping that are not