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Current AFS backup in numbers /afs/cern.ch 300TB total 80K volumes Daily backup ~10K volumes dumped 10-15TB traffic to tapes Total backup ~2.5 PB on tape ( x 2 for dual-copy) ~2.5 millions object in the backup archive keep daily snapshots for 180 days Restores ~60 volume restores from tapes monthly we are using the official TSM backup service – managed by another team 3CERN AFS Backup System - J.T.Moscicki- EAKC 2014 Geneva

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