Is there any way to measure how many bytes where written to the tape
every night?  I would like to feed the values to MRTG or something, so I
can see when I am close to using two tapes per dump.

Also, if the data is available, is it the raw uncompressed bytes, or the
post-gzipped bytes that are recorded?  I would like to see the both, to
measure my compression ratios.

Thanks group,

Jay