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Emery Guevremont wrote:
> How sure are you that it continuously writes to tape. On my setup I put
> a max spooling size of 10 Gigs, and everytime it reaches the 10 gigs,
> the spooling seems to stop. Bacula seems to empty the spool by writing
Spooling doesn't necessarily write to tape all the time. It just makes
sure that you've collected enough data to write so that when it writes
it can do it in one big chunk (instead of starting and stopping all the
time when data doesn't come in through the network fast enough).
If your network keeps up with the data rate (or the backup is local) and
you only have a single job to run, there's no need for spooling as you
won't gain anything.
If your network doesn't keep up with your tape's data rate, spooling can
reduce the shoe shining.
If you want to run multiple concurrent jobs, spooling is recommended as
it writes long continuous chunks of each job to the tape, as opposed to
having to interleave the data of the simultaneous jobs without spooling.
Greetings,
Michel
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