Hello,

I was reading through the page (link below) and this sentence looks very 
interesting from performance perspective.  I am using the default on version 9 
and it seems to be 1 GB, but  according to this document, 5 GB is better.  So 
the question is, why isn't 5GB the default?  Asking because, I suspect there is 
might be side effect of increasing it and hence the lower default.

Do most of you change it?  If you have changed it, did you notice any side 
effect after applying the change? 

=====
If you have LTO-3 or LTO-4 drives, you should be able to fairly good transfer 
rates; from 60 to 150 MB/second, providing you have fast disks; GigaBit 
Ethernet connections (probably 2); you are running multiple simultaneous jobs; 
you have Bacula data spooling enabled; your tape block size is set to 131072 or 
262144; and you have set Maximum File Size = 5G.
===

https://www.bacula.org/5.0.x-manuals/en/problems/problems/Testing_Your_Tape_Drive.html


Regards,
William

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