> Yes John, they are LTO-3 tapes.
>
Is your data already compressed (.zip, .bz2, .7z, .mpeg ...)? Or is
software compression enabled?

If not I am not sure. Bacula does not directly control the drive. It
relies on the OS to tell it that the tape is full. Well actually this
process is not even that clear. The streaming tape drive reports a
write error when it can not fit a block on the tape. When bacula sees
this error it checks that the last block was written successfully and
then marks the tape full.

John

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