Yup, that's exactly what it does here too.  I guess one could think of the 
extra backup usage wear as akin to the order of the starting lineup in a 
baseball team.  The guy batting first will, in the course of a whole 
season, be at bat a lot more times than the guy last in the order.

Another result is that the last job in a big schedule frequently wants to 
run in drive 0 but using a tape that's already mounted in a different 
drive.  Fortunately, bacula 5.0.3 seems to be pretty good about unloading 
the tape and re-loading it (with the timeout settings in place in the sd 
config) but this is also extra wear and tear and probably has a much worse 
effect.


On 2/2/2011 9:30 AM, Alan Brown wrote:
>
> Where can I find documentation on how Bacula chooses drives in a changer?
>
> It appears that right now it's always seeking to find an unoccupied unit
> numbering upwards from drive 0 every time, but that means that there is
> an uneven spread of wear and tear across the devices.
>
> Can anyone verify?
>
> AB
>
>
>
>
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