On Thu, Aug 30, 2012 at 12:01 PM, Rao, Uthra R. (GSFC-672.0)[ADNET
SYSTEMS INC] <uthra.r.rao AT nasa DOT gov> wrote:
>
> John,
>
> I wanted to try something to get my 2TB tapes recycle faster.
>
> Current configuration:
>
> pool {
>   name = server-archive
>   Pool Type = Backup
>   Autoprune = no
>   Recycle = no
>   Volume Retention = 10 years
> }
>
> To the above configuration I want to add "Volume Use Duration = 1 month" so 
> that the tape will be used for 1 month and then will get "FULL" status though 
> it Is not really FULL. Once the tape is in FULL status the 3 months retention 
> period starts and after 3 months the tape is recycled and can be reused. By 
> doing this I don't have to change the retention period but I will have a FULL 
> back-up every 1+3 months (4months). Currently the tape is taking 3 months to 
> fill up and another 3 months for the retention period (3+3=6 months).
>

If you added "Volume Use Duration = 1 month" then the tape would be
used for 1 month and then after that it will be marked "Used". After
it is marked used the retention period begins and is calculated from
the the last written date/time that is recorded in the database for
that volume. So if you have a 3 month volume retention (your above
example shows 10 years) the tape should be ready to recycle in about 4
months.

John

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