backup with tape

See tldp or ubuntuforums

Backup using tar:
tar -zcvpf /archive/full-backup-`date '+%d-%B-%Y'`.tar.gz --directory / --exclude=mnt --exclude=proc --exclude=var/spool/squid .

Restore:
tar xvpfz full-backup-date-XXX.tar.gz -C /

Rewind of tape (before all operations):
mt -f /dev/st0 rewind

List of files (tar.gziped archive) on tape:
tar -tzf /dev/st0

Extracting of directory www from archive to actual directory:
tar -xzf /dev/nst0 www