Remember that
you will get very little compression a second time. Have you tried
more than 1 tape? I assume you do not have any fixed volume size limit
set on the pool.

Thanks John for reply.

|| Is your data already compressed?

No, i've disabled gzip compression on bacula to speed up backups (from 10MB/s 
to 50MB/s), and the most of files are uncompressed (pdf, doc, dwg...).

|| Have you tried more than 1 tape?

Yes, i've tried three. All formatted (one with mt command, and two with btape).

|| I assume you do not have any fixed volume size limit set on the pool.

I don't have any entry in pool about size limit or similar:

Pool {
        Name = "zurbano_servers_cinta_sys.po"
        Pool Type = Backup
        Storage = "triky_cinta_sys.st"
        LabelFormat = zurbano_servers-
        Recycle = yes
        AutoPrune = yes
        Volume Retention = 2 months
        Volume Use Duration = 1 months
        Recycle Oldest Volume = yes
        File Retention = 2 months
}

-------------------------------------------------------------------------
-------------------------------------------------------------------------

Storage {
        Name = "triky_cinta_sys.st"
        Address = 1xx.xx.xx.xx
        SDPort = 9103
        Password = "passwd"
        Device = "triky_cinta.de"
        Media Type = LTO-4
}

Device {
  Name = "triky_cinta.de"
  Media Type = LTO-4
  Archive Device = /dev/st0
  AutomaticMount = yes;
  LabelMedia = yes
  AlwaysOpen = yes;
  RemovableMedia = yes;
  RandomAccess = no;
  Spool Directory = /server/bacula/spool
  Maximum Spool Size = 1500g
  Maximum Job Spool Size = 500g
  Maximum File Size = 5g
}

-------------------------------------------------------------------------
-------------------------------------------------------------------------

Greetings!!

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