On 08/05/11 14:17, Jeff Cleverley wrote:
> Dan,
> 
> I'll throw in some general explanations of my own.  Perhaps a
> different concept of things would help.
> 
> Consider a garage to be a storage pool.  Inside the garage are 100 1
> gallon buckets.  The buckets are your volumes.  You data is water.
> Outside the garage you have a 5 gallon bucket of water (your data).
> The job puts the 5 gallons of water into the 1 gallon buckets.  Your
> files are 1 teaspoon each.  Since all the data gets mixed in the
> buckets, you cannot empty (recycle) a bucket until every teaspoon in
> them is ready to be dumped out.  The backup software will put your
> water in any bucket that has room in that garage.  It generally will
> fill each bucket in turn and not partially fill multiple buckets.
> 
> You would generally have a different garage for each retention period.
>  You can move empty buckets (volumes) between garages if you need more
> in one or the other.  You may also set up a new garage when bigger
> buckets (larger tape capacity) become available and they require
> different handling.


I just want to say that this analogy is made of pure win.  :)


-- 
  Phil Stracchino, CDK#2     DoD#299792458     ICBM: 43.5607, -71.355
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  Renaissance Man, Unix ronin, Perl hacker, SQL wrangler, Free Stater
                 It's not the years, it's the mileage.

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