Comment Who are these companies? (Score 1) 403
We do incremental daily backups of main data to LTO4, they go offsite the next day, and a full backup every week, per set. We have 3 sets - there is always one off-site. We also locally sync startup disks, Exchange data goes over the wire every night, finance database is backed up every night via FTP over the wire.
I think we worked it out that we would only lose a weeks worth of data if the office burned down AND the van carrying one set of backup tapes crashed and exploded.