LHC Computer Grid - Rollout > [mailto:[log in to unmask]] On Behalf Of Jules Wolfrat said: > The VO doesn't have to notice, the sysadmins are supposed to > detect that > the RLS is broken (e.g. a disk crash) and have to restore, at least at > our site. And we keep backups at least for several weeks. I wasn't thinking of crashes so much as deliberate or accidental corruption by a user/hacker, which might well go un-noticed until someone tries to access one of the missing files. Stephen