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Chris Howells wrote:
> Michael Galloway wrote:
> 
>> how does concurency work for tape libraries? can i use spooling and 
>> concurrency?
>> would that help? i've already got spooling job (2GB segments) and attributes.
> 
> You can use concurrency with tape, yes. I write five concurrent jobs to 
> LTO-4. (I have an autochanger, but it's only got a single LTO4 tape 
> drive in it).
> 
> The bacula manual warns somewhat against using concurrent jobs with 
> tape, but I've been using it for a year, every restore has been 100% 
> perfect, and the restore speed is absolutely fine for my needs, it's 
> pretty quick anyway.
> 
> I'm not sure about spooling as I don't use it but I understand it can 
> help to increase restore speed, but as I said, I don't have a problem 
> with restore speed anyway.

You should use spooling. I'm not 100% sure that interleaving should even
be allowed, as I've heard of some people having strange things happening
with it enabled. Also takes life off your tape head, if I'm not mistaken.

- --
 ---- _  _ _  _ ___  _  _  _
 |Y#| |  | |\/| |  \ |\ |  | |Ryan Novosielski - Systems Programmer II
 |$&| |__| |  | |__/ | \| _| |novosirj AT umdnj DOT edu - 973/972.0922 (2-0922)
 \__/ Univ. of Med. and Dent.|IST/AST - NJMS Medical Science Bldg - C630
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