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
ala...@caerllewys.net ala...@metrocast.net p...@co.ordinate.org
Renaissance Man, Unix ronin, Perl hacker, SQL wrangler, Free Stater
It's not the years, it's the mileage.
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