Hello,
Please keep in mind also that when you have large number of tapes to 
recovery from the risk of loosing them, something going wrong with them 
physically & also possibility of media error keeps going up and up, this 
is one of the reasons, i would prefer to have shorter interval between 
full.
Thanks



Davina Treiber <Davina.Treiber AT PEEVRO.CO DOT UK> 
Sent by: EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>
01/20/2009 04:22 AM
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Davina Treiber <Davina.Treiber AT PEEVRO.CO DOT UK>


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Subject
Re: NDMP Schedling






A Darren Dunham wrote:

> I'm not sure what you're saying about a level 1 acting as an
> incremental.  A level 1 and an incremental are different.  In a normal
> environment, consecutive level 1 jobs will require more volume space
> than consecutive incrementals.

Not necessarily true. Although you will backup more data with a level 1 
than an incremental, you will need to keep more volumes to fulfill the 
retention requirements. If you have a monthly cycle of incrementals you 
will need to keep up to a month of extra incremental backups, since the 
incrementals depend on all the other incrementals all the way back to 
the previous full. With a monthly cycle of level 1 backups the level 1 
backups will expire at exactly the time when the retention period is 
reached, depending only on the full.

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